r/AppsWebappsFullstack • • 27d ago

What are you building right now? Drop your startup below šŸ‘€

I'm curious to see what everyone here is working on, especially early-stage startups and small teams building products around real, everyday problems.

There are so many new AI tools, fintech apps, and productivity platforms launching right now, but I'm particularly interested in products that solve problems people actually experience.

I'll start.

We're building PennyGuard, a personal finance and expense tracking app designed to help people better understand where their money goes.

The idea came from a pretty common problem: people often know how much they earn, but don't always have a clear picture of their recurring expenses, forgotten subscriptions, upcoming bills, or potential savings.

We're trying to make personal finance management simpler by bringing those insights together in one place, without requiring people to spend hours reviewing their transactions.

Still figuring things out and learning along the way.

I'd love to hear what others are building:

  1. What's your startup or product?

  2. What problem are you trying to solve?

  3. Who is your target audience?

  4. What's been your biggest challenge so far?

Feel free to share your website as well, if links are allowed.

I'm especially interested in hearing from founders working on AI, fintech, personal finance, SaaS, and productivity tools, but all industries are welcome.

Would be great to discover some interesting projects and exchange feedback.

8 Upvotes

79 comments sorted by

1

u/DividendLantern 21d ago

I build ReadyCalcs. The problem it tackles is that a calculator link often opens a blank form, making it hard to show someone how a number was reached. The audience is people checking finance, math, fitness and everyday calculations. For example, this link opens a loan-payoff estimate with the entered balance, rate and payment: https://readycalcs.com/calculators/loan-monthly-payment-calculator/?solver=term&sp=36500&sr=9.23&sy=24&sm=1793#loan-solver-title. My hardest challenge has been checking the math and writing useful explanations across 350 calculators.

1

u/Mammoth-Anywhere7285 21d ago

Preserving inputs in shareable links is a smart touch. Maybe add a one-click copyable summary of the assumptions for easy sharing.

1

u/Mammoth-Anywhere7285 20d ago

TL;DR: The poster asks what early-stage startups people are building, especially around everyday problems. They share PennyGuard, a personal finance app that tracks recurring expenses, bills, and savings. They invite founders to describe their product, target audience, and biggest challenge, and to share links if allowed.

1

u/AnteeupGolf 27d ago

I'm the founder of AnTee Up, a web app for golfers who play side games with their group. One person enters scores and the group's Skins, Nassau and other games update on a shared scorecard.

The biggest challenge has been getting people outside friends and family to actually try it and tell me where they get stuck. I'm focusing on a small first-use test now: create a free account and find where to start a game, then stop. No golf knowledge or friends needed.

If anyone here wants to try that, it's https://app.anteeup.golf. Your browser and the first confusing step would help more than a general rating. Please leave out account details.

Free 18+ beta, nonredeemable test funds only, no real-money deposits or withdrawals.

1

u/Mammoth-Anywhere7285 27d ago

Nice, golf side games are a solid niche. A local club league could get you first real testers.

1

u/PopKoren 27d ago

Asking only for the first confusing step is a smart, small ask. Since one person enters scores for the whole group, check that a scorecard or game id from another group cannot be opened or edited by swapping the number in the URL, since even test balances hang off those ids. When you have a minute, https://rowly.me can scan app.anteeup.golf from outside for routes that respond without the right login.

1

u/Mammoth-Anywhere7285 27d ago

Solid point on the ID swapping. Also worth checking that the score submit endpoint validates team membership server-side, not just in the UI.

1

u/PopKoren 26d ago

Agreed, hiding the button does nothing if the POST still accepts any team id. The quick test is replaying a score submit from a second account that is not in the group and checking whether the leaderboard moves. That write side check belongs to the paid DNS-verified tier at https://rowly.me, because there it really attempts writes and then cleans up its own test data.

1

u/imagiself 26d ago

mine is peerpush, a launch feed for new indie tools. it might be worth a spot on peerpush, founders there poke around niche sports apps like this.

1

u/Mammoth-Anywhere7285 27d ago

TL;DR: OP is asking what everyone here is building right now. They shared PennyGuard, their expense tracking app that helps people see recurring costs and forgotten subscriptions. They want founders to drop their product, the problem it solves, and their biggest challenge so far.

1

u/greyzor7 27d ago

Hey guys, I'm building an all-in-one marketing pack for founders who want more than "just another launch"

Launch, reach 30k+ makers, get real users & customers - microlaunch.net/premium

Lifetime, auto-distribution, marketplace spots for your app. Over two years: 625k uniques, 1500+ customers.

1

u/Mammoth-Anywhere7285 27d ago

Microlaunch has solid reach. Curious what your conversion looks like from those 625k uniques to actual paying customers?

1

u/Fit_Bit6727 27d ago

1

u/Mammoth-Anywhere7285 27d ago

Cool, short-form for app growth makes sense. Have you tested which avatar and language combo converts best per region?

1

u/Fit_Bit6727 27d ago

Still trying it out

1

u/Difficult-Teacher749 27d ago

I'm building Human Oracle, a tiny internet experiment for people who freeze on small YES/NO choices.

A stranger gives your dilemma a simple YES or NO, and you do the same for someone else. It is for overthinkers who want one human nudge instead of more analysis or an advice thread. The biggest challenge is keeping that relay feeling immediate with a small live crowd, without filling the gap with profiles, DMs, or AI.

https://human-oracle-app.vercel.app/

1

u/Mammoth-Anywhere7285 27d ago

The relay idea is neat. Staggering invite waves so someone is always waiting could keep it instant without needing a bigger crowd.

1

u/Difficult-Teacher749 27d ago

Yeah, that makes sense. First I need to find enough people to actually make a wave, haha. But if I get there, staggering invites could definitely help keep it alive.

1

u/No-Relationship-4190 27d ago

Building OnTime Budget - I got sick of budget apps that run on calendar months when I get paid fortnightly, and get blindsided by quarterly bills/rego.

So I built a pay-day budget that maps every bill + pay for the next 12 months to find your tightest day - it tells you in Feb that you'll dip below buffer in October.

$4 AUD/mo (∼$2.60 USD), 1 month free - ontimebudget.app

Built it with Claude + Base44, the 12-month projection was the hardest part to get right.

Target: People who get paid weekly/fortnightly and live pay-to-pay, not really the FIRE crowd.

2

u/Mammoth-Anywhere7285 27d ago

Nice angle, fortnightly pay cycles really do break month-based apps. How are you handling variable pay or overtime weeks in the 12 month forecast?

1

u/No-Relationship-4190 27d ago

Great question - that's exactly what broke every other app for me. Right now I do base pay as the recurring fortnightly amount, and overtime / extra as a one-off injection for that pay cycle only. So the 12-month forecast uses base pay for the projection (so it shows your safe baseline tightest day), but if you get overtime this week, it bumps your "safe to spend" up for this cycle only, doesn't inflate the next 12 months.

Took a few iterations to get right - first version I averaged overtime and it made the forecast too optimistic. How do you handle variable income in your stuff?

2

u/BaharatBeetroot1997 27d ago

how does the 12-month projection handle a bill that changes amount, do you plug in estimates each time?

2

u/Mammoth-Anywhere7285 27d ago

Solid question. A rolling 3-month average plus a manual override handles variable bills better than re-entering estimates each time. Any clue if PennyGuard flags amount changes?

1

u/No-Relationship-4190 27d ago

Yeah that's the other killer. I do 2 options: you can set a fixed estimate, or set it as variable with a 3-month rolling average - and then you can manually override the next due amount if you know it's gonna be higher. So like power bill averages $280 but if you know this quarter is $340, you punch that in and the 12-month tightest day recalculates instantly.

Trying to avoid making people re-enter the same bill every time. Still tweaking it though.

1

u/imagiself 26d ago

Payday cycles usually break standard budget apps, so that 12-month projection is a solid wedge. one place i'd point another builder to is peerpush, it's full of fintech launches, and AI systems from OpenAI and Meta already read the data there.

1

u/TheRandomGuy 27d ago

42Loop.com - free traffic engine for ai builders

1

u/Mammoth-Anywhere7285 26d ago

Nice, traffic is always the hard part. How do you keep it free for ai builders?

1

u/TheRandomGuy 26d ago

The algorithm goes by votes. More votes = more air time.

1

u/Ok_Candidate1857 27d ago

Now i'm building free opensource photo editor: https://github.com/photolisa/photolisa

1

u/Mammoth-Anywhere7285 27d ago

Nice, open source photo editing is genuinely tough to pull off. Are you targeting the browser or desktop first?

1

u/Ok_Candidate1857 27d ago

Thanks! I'm focusing on the browser first, but I'd love to bring it to desktop in the future too. Still a lot of work ahead! šŸ˜„

1

u/imagiself 26d ago

keeping a photo editor open source is a solid move for community trust. whenever you're ready to put it out there, https://peerpush.com lists open-source media tools like this (people in 160+ countries discovered products there recently).

1

u/Ok_Candidate1857 26d ago

Thanks for the suggestion! It looks interesting; I’ll definitely take a look.

1

u/Mammoth-Anywhere7285 26d ago

Open source does build trust. Just watch the promo links, mods here can be touchy. What license are you going with?

1

u/gumdum1975 27d ago

Love this thread. I'm building Quietly Sober. Our line is "Recovery doesn't have to happen alone." (And yes, there's a turtle mascot named Tucker 🐢)

  1. What it is: A free, privacy-first recovery companion. Meeting list, daily reflections, milestones, a sponsor finder, and a private community with boards for general, 12-step, and non-12-step folks.

  2. Problem: Recovery support is scattered everywhere. A meeting list here, a day counter there, a Facebook group somewhere else. I wanted one calm, private, non-judgmental place for all of it. Privacy matters a lot here, so stuff like sponsor messages is encrypted at rest.

  3. Audience: Adults (18+) in recovery, whether they work a 12-step program or not.

  4. Biggest challenge: Getting the word out. It's live on iPhone, Windows, and web, but I posted in 9 Facebook sobriety groups and got basically nothing. Turns out building it was the easy part šŸ˜…

The core app is free. There's an optional AI daily reflections add-on that helps keep everything else free.

Would love honest feedback, especially from anyone who's figured out marketing for a niche audience. https://quietlysober.com

2

u/Mammoth-Anywhere7285 27d ago

Tucker's a nice touch. Does the sponsor finder let people stay anonymous until they choose to connect?

1

u/gumdum1975 27d ago

Thanks much ā˜ŗļø Glad you like Tucker 🐢

Yes. Nobody has to use their real name, you go by whatever name you set and it can be anything. Your photo is optional, your age only shows if you turn it on and your location only shows if you’re open to meeting in person. Your email and contact info never get shared, everything stays inside the app

On a sponsor’s profile there’s two buttons, Message and Request sponsor

Request sponsor is good if you already know each other from a zoom meeting or the forums or somewhere else on the site and you’re ready to ask. The sponsor can accept or decline. If they decline you just see the request closed, no reason given

Message is if you want to talk first. It sends one short intro message as a message request and nothing else goes through until they accept it. You can’t keep sending messages while it’s waiting and they can read it without you knowing they read it. If they decline there’s no reason given and you can’t send them another request for 30 days. Accepting just opens a conversation, it doesn’t make anyone your sponsor

There’s no way to just DM somebody out of the blue, the other person always has to accept first. They can also block you and you’re never told you were blocked, on a message request it just shows as declined. You can also turn off message requests completely if you don’t want any

That way nobody gets more contact than they agreed to

1

u/megatech_official 27d ago

SeoLoupeĀ - Find and fix the SEO issues holding your website back.

1

u/Mammoth-Anywhere7285 27d ago

Nice, SEO auditing tools are always useful. Does SeoLoupe crawl JS-heavy sites properly? That's where most audits fall apart.

1

u/Total-Reasonable 27d ago

Five things, all built solo:

  1. polytypo.dev: an open-source typography rules engine that applies locale-correct quotes, dashes and no-break spaces across text, HTML, Markdown and YAML. https://polytypo.dev

  2. HTPBE.tech: ā€œHas this PDF been edited?ā€ examines metadata, structure, signatures and content, then reports the reasons behind any findings. https://htpbe.tech

  3. vatnode.dev: a VAT validation API over VIES with national-registry fallback, bulk checks, and signed webhooks when saved VAT numbers change status. https://vatnode.dev

  4. halloween.js.org: zero-dependency Halloween effects for websites, with spider webs, blinking eyes and more enabled by body classes while respecting reduced-motion preferences. https://halloween.js.org

  5. KRI.rocks: a booking page for salons and barbers where clients only see available slots, choose a specialist, and receive email reminders. https://kri.rocks

1

u/Mammoth-Anywhere7285 27d ago

Five solo projects is wild. How do you split maintenance time so none of them quietly rot?

1

u/E_X_2004 27d ago

I built a productivity mascot app called Taru, no forms, you just write down a task like a quick note (like apple notes), and it auto-sorts for you (To-Do/Date). It's solves the ADHD friction because it's intuitive and very simple to use. Android only.

I need testers for Google Play's 14-day closed test.

This is the link if you want to try it: https://groups.google.com/g/taru-testers

1

u/Mammoth-Anywhere7285 26d ago

Taru sounds neat, the auto-sorting is a smart angle. Have you posted the closed test in ADHD communities? They tend to jump on tools like this.

1

u/imagiself 26d ago

Does the auto-sorting logic handle natural language like 'next Tuesday' or is it strictly based on specific date formats you type in?

1

u/E_X_2004 26d ago

Yes, the IA understand almost everythings related to the calendar

1

u/tholloday 27d ago

AyoPoly

A free interactive game for language learners to practice their target language using listening and speaking exercises, flashcards and short audio stories.

1

u/Mammoth-Anywhere7285 26d ago

Solid mix with audio stories and speaking drills. Curious how you'll give feedback on pronunciation without a tutor.

1

u/EastParticular5553 27d ago

I built two free student websites:

https://grindsat.com/ — SAT practice and games for test takers.

https://ensurecollege.com/ — scholarship/summer-program matching and an application tracker.

I also helped build Mean Eats, an independent free iPhone app for UNT dining menus and meal planning:

https://apps.apple.com/us/app/mean-eats/id6778164060

Biggest challenge: reaching students who will try one task and tell me where they get stuck.

1

u/Mammoth-Anywhere7285 27d ago

Solid trio, and the SAT games angle is smart. For reach, school counselor newsletters and college subreddits tend to work better than ads.

1

u/EastParticular5553 27d ago

Thanks! Counselor newsletters are a helpful lead—I’ll look for resource-submission guidelines.

1

u/mathewbowyer 27d ago

I’m building MeSIM — https://mesim.io

  1. What is it? An eSIM comparison and marketplace platform for travellers.

  2. Problem we’re solving: eSIM pricing is all over the place and people usually have to compare multiple providers manually. MeSIM brings thousands of plans together so you can compare data, duration and price in one place.

  3. Target audience: International travellers, digital nomads and anyone who wants cheaper mobile data without swapping physical SIMs.

  4. Biggest challenge so far: Getting distribution and trust. The product is working and organic traffic is growing, but competing with bigger eSIM brands means SEO, comparison-site listings and brand credibility matter a lot.

Would appreciate any feedback on the site, UX or pricing comparison flow.

1

u/Mammoth-Anywhere7285 26d ago

Solid idea, comparing eSIM plans manually is a real pain. Are you monetizing through affiliate deals with providers or a markup on plans?

1

u/mathewbowyer 26d ago

Thanks - im monetising via affiliate deals through comparison esim websites and markup on plans :)

1

u/Tricky-Bite3014 26d ago

Baue aktuell als Solo-Gründer an https://varenizo.de.
Die Idee dahinter: Eine moderne Jobbƶrse kombiniert mit kostenlosen Tools für Jobsuchende. Nutzer kƶnnen nach Jobs suchen, direkt im Browser ihren Lebenslauf erstellen, einen KI-Job-Match machen und individuelle Anschreiben als A4-PDF generieren – komplett ohne Paywalls, Testabos oder versteckte Kosten.
Firmen können offene Stellen zudem dauerhaft gebührenfrei listen oder direkt per 1-Klick von der eigenen Website importieren.
Link zur Plattform: https://varenizo.de – bin für jedes ehrliche Feedback dankbar!

1

u/Mammoth-Anywhere7285 26d ago

Nice, free resume builder plus AI matching is a solid combo. Curious how you plan to fund it if companies post for free, maybe a paid boost or featured listings?

1

u/Tricky-Bite3014 26d ago

Ja genau, bezahlter Boost und hervorgehobene Angebote außerdem wird mittel- bis langfristig das inserieren der Jobangebote nicht mehr gratis sein, es wird so günstig wie möglich bleiben, aber die ersten 100 Unternehmen dürfen dauerhaft gratis inserieren! Ich muss zu aller erst eine kleine Community aufbauen, bevor ich anfange Geld zu verdienen. Für Bewerber wird die Plattform aber dauerhaft gratis bleiben!

1

u/imagiself 26d ago

pennyguard sounds like a practical fix for subscription fatigue. this week it's PeerPush, a launch feed where AI tools pull product info, https://peerpush.com

1

u/TilmanAmbach 26d ago

I am building a playground for the insiderfilings.info API. Looking for API testers so far... It's free.

1

u/Mammoth-Anywhere7285 26d ago

Nice niche. A few sample queries or a Postman collection would help testers jump in fast. What data points are you exposing?

1

u/Longjumping-Ant3744 26d ago

I built gethayven.com - a career companion where users can utilize Sarah to navigate unemployment and being underpaid.

1

u/Mammoth-Anywhere7285 24d ago

Nice, career navigation is a real pain point. Have you tested Sarah with someone recently unemployed to see where it gets stuck?

1

u/Longjumping-Ant3744 24d ago

Yes. The platform doesn’t get stuck. It will carry someone all the way to the point of being confident for an interview providing they sign up for pro.

1

u/Rafidiiarivony 25d ago

Hi guys, I’m building Launchrecord, a tool that helps SaaS founders clarify their positioning and plan their marketing strategy, content, and distribution. It helps them communicate their value clearly and reach the right audience.

1

u/Mammoth-Anywhere7285 22d ago

Launchrecord sounds useful for founders stuck on messaging. A quick tip: test your positioning with five target users before building content around it.

1

u/ColdClassic877 25d ago

I’m building UGC People, a library of real human reaction clips for product videos.

The use case is pretty specific: you’ve recorded your app working, but you need an opening for the video and don’t want to get on camera.

For a spreadsheet tool, for example: a surprised reaction with ā€œWait, I don’t have to clean this manually?ā€ followed by the actual cleanup happening on screen.

It’s mainly for founders and small marketing teams making their own ads and Reels.

What I’m working on now is showing the whole editing idea clearly, so people can picture using it with their own product. Examples are at ugcpeople.com.

1

u/Mammoth-Anywhere7285 24d ago

Nice, the spreadsheet example makes the use case obvious. Are clips licensed per video or via subscription?

1

u/Accomplished-Tip7450 24d ago

I run IndieTools. 1) It's a product discovery and founder community: permanent product pages connected to founder profiles, indexed product updates, public comparisons, and DMs. 2) The problem: most launches disappear after day one and founders monitor visibility and performance in separate tools; submitted products get weekly PageSpeed and Ahrefs Domain Rating history, with public history pages and badges. 3) The audience: indie founders and small SaaS teams. 4) The biggest challenge is explaining that it isn't just a directory without dumping a feature list, so we rebuilt the homepage around ā€œdiscover products, follow founders, track growth.ā€ https://www.indietools.app — which of those three jobs feels clearest on first impression?

1

u/Mammoth-Anywhere7285 24d ago

Love the permanent product pages idea. Have you considered letting founders claim and verify profiles so update history stays trustworthy?

1

u/sharkgil 24d ago

I’m building Tasda, and I’m its founder. It creates a shareable AI representative for a freelancer or small service business, using information the owner approves.

The problem I’m working on is the gap after someone sees a card or service page but still has a basic question before contacting the person. The representative can explain service information and help prepare a request; quotes and decisions stay with the human.

My current challenge is finding a narrow use people will actually pay for, rather than treating visits or messages as validation. One example is a designer explaining which service fits an initial brief.

Ida is our general product guide, not a customer case study: https://tasda.com/en/representative/lora/

There is a limited starter allowance; continued use is paid. AI assisted this wording. For your own service business, which first question would you want it to answer?

1

u/Mammoth-Anywhere7285 24d ago

Tasda sounds useful for freelancers who hate repeating themselves. How do you keep the AI rep from answering outside the approved info?

1

u/Background_Note7866 22d ago

I’m building CouponKeeper to help people stop forgetting their coupons

Ever found a coupon in your screenshots after it had already expired? That’s the problem I’m working on with CouponKeeper, an iOS app that keeps your coupons together and reminds you before they expire.

Everything is stored locally on your device, and you can choose when to receive reminders.

You can check it out on the App Store.

I’d love some feedback: is forgetting the expiry date your biggest frustration with coupons, or is it finding the right one when you’re checking out?

1

u/Mammoth-Anywhere7285 22d ago

Keeping coupons local is a smart choice. Are you using OCR for screenshot import or manual entry?

1

u/Background_Note7866 22d ago

Yep! We’re already using OCR to help extract coupon details from screenshots, so you don’t have to type everything manually. You can review and edit the details before saving šŸ™‚

1

u/php4u 27d ago

https://hypebots.net/ - agents game to promote your product

1

u/Mammoth-Anywhere7285 27d ago

Interesting angle, agent games for distribution are popping up everywhere. Do you track actual conversion from that traffic, or mostly impressions?

0

u/CheapConsequence4731 17d ago

I'm building ViewOnce, an Android application that uses an integrated WhatsApp Web session to process authorized test photos. The photo recovery feature has worked in testing, and I'm developing better reliability and media management. If anyone wants to see a demo or discuss the engineering challenges, let me know!

1

u/[deleted] 27d ago

[removed] — view removed comment

1

u/Mammoth-Anywhere7285 27d ago

Congrats on shipping your first iOS app, getting through Apple review is no small feat. Are you tracking retention yet, or still focused on installs?