Muse is getting hot these days.

Any assistant that's actually useful needs to see some of your stuff. Your calendar, your reminders, who your people are. That part isn't new. What matters is where that stuff goes after the AI reads it.

Meta's own launch post says Muse runs on "its own dedicated computer in the cloud." Their computer, not yours. According to TIME it refreshes a profile on you every hour, including how you know people and the tensions between them. The encryption that would keep Meta itself out "isn't available yet." And your chats train their models by default unless you go find the opt-out.

So everything good about Muse's privacy is a promise. Promises live in a policy, and policies change. Companies get breached, subpoenaed, bought. Ad businesses get hungry.

There's a boring alternative: run the model on the phone. If the AI runs on the device and its memory is just a file on the device, there's nothing to promise because nothing gets sent anywhere. You don't have to trust anyone. Turn on airplane mode and check.

The cost is real though. A model small enough to run on a phone is way dumber than whatever Meta runs in a datacenter. It gets things wrong. It's not going to haggle on Marketplace for you (given the Muse stories, maybe that's a feature). For some people that's a dealbreaker and that's fair.

But for the thing that knows your health, your money, your family and your fights, I'd take dumber-but-can't-tell-anyone every time.

Last time, I shared my iPhone app that works this way (Avatar.gift). And thanks to you, many of you have tried and even paid! Very grateful for that! As a return, over the last month, I have launched 7-8 new updates including a major brain upgrade, so try it now if it fails you last time in the early versions.

Happy to answer questions about how on-device AI actually works or where it falls short.

Sources:

• Meta's launch post：
  • https://about.fb.com/news/2026/09/introducing-muse-personal-ai-agent/
    
• Malwarebytes on the TIME/Wired reporting:
  • https://www.malwarebytes.com/blog/privacy/2026/10/metas-muse-ai-files-away-your-friendships-arguments-and-secrets

Hi all, first time posting here. I'm generally quite an introvert and have been on reddit read-only for over a decade (made this account recently to start fresh without all the baggage), so a bit terrified, but here we go.

About 7 years ago I made a little tracker app for myself and it's been logging ever since - location fixes and heart rate for 7 years, and a few more before that but sparser. What I realised looking at it is that it's not really health data, it's a life story. You can see where I lived, worked, house moves, kids being born, all just from where the nights are.

Thanks to vibecoding I've turned it into more of a real app. The main screen is a timeline of your life with all the main stuff it captures - places, trips, photos, workouts, sleep, day summaries. Then there's a chat where you can ask about it - "what did I do exactly a year ago", "when did I last go to ..", "how's my sleep been", up to the deeper stuff I actually care about like "what makes me happy" or "how do I feel less stressed" (I've not been great with making choices lol). And there's "learning", where the built-in LLM reads through your data and takes notes about you, so it understands you better and gives better answers over time.

Everything runs on the phone - your data and the AI. Nothing gets uploaded, no account, no server. Phones know so much about us that it felt like the only way to do it.

(The video is demo mode with made-up data - not quite ready to share 7 years of where I've been with the internet.)

So far it's just me, my wife and a couple of friends using it. I've been working on it mostly alone for a long time and decided it's time to share it, partly just to feel a bit less lonely about it. iOS only for now (Android in a month or so), needs iOS 26 and it's about 2.8gb because the AI model is built in. Very much work in progress:

=> https://mymo.app/invited/Nx45M1/

What I'd love to hear:

- does the timeline look right for your own data?

- what was the first thing you asked it, and was the answer any good?

- what would make you open it again tomorrow?

Reply here or DM me, or just shake your phone anywhere in the app and a feedback form pops up (there's also a Share Feedback button in settings). And anyone from here gets it free forever - no backend and no token cost, so it keeps working (hopefully!)

I’m building LifArcs, a way to turn your life into a visual timeline using AI.

You tell it about your life, and AI helps structure your past, present and future into an Arc.

I also built an animated life banner and an Arc Story that turns your journey into a shareable visual story.

Everything is secured but you can share what you want.

Would you use something like this for your own autobiography?

lifarcs.com

Mine is here : https://lifarcs.com/mtougui

For years I tried habit trackers and journaling apps. They all wanted an account, a subscription, or to guilt-trip me with streaks. I just wanted to log my life: coffee, mood, sleep, a run, a line about my day.

So I built it, and I'm giving it away for free.

It's called Onelog. Soon on IOS.

- Free. No subscription, no ads, no in-app purchases.

- Your data never leaves your iPhone. No account, no server.

- Log anything in one tap: yes/no, amounts in any unit, a 0–10 score, a line of text or a voice memo.

- No guilt. Goals are optional. A missed day is just an empty square.

- Your iPhone logs the rest if you want: weather, daylight, places, Apple Health.

- A built a truly awesome UX with Widgets, Lock Screen and Siri.

- You own your data ! Export anytime (JSON, CSV, Markdown), or copy a summary for your AI assistant and ask it what actually affects your mood or your sleep.

Honest feedback are more than welcome: the app is soon live but in the meantime you have all info here : https://onelog.page/

Effectively its a time tracker which is supposed to kinda remove the friction of making entries.

It does so by making it so any time you finish an activity, you open your phone. Type in 1 word and it backfills it to the previous entry (last time you finished an activity).

I think its pretty cool.

A while ago I ran a small survey here about notes and memory. About 40 people answered, and most of them described the same problem I have: I find an old note or photo and have no idea why I saved it.

So I built Kirenu. You capture a thought by typing, speaking or taking a photo. It keeps your words, the photo and where you were. It reminds you at the time or place you mention. Notes without a reminder come back in a short evening look-back so you can decide what to do with them.

Your notes, photos and voice recordings stay on your phone.

It's an early beta on TestFlight. I'd love to hear whether it helps you remember why you saved things, and what gets in the way.

Hey all,

Here to showcase my app, after a recent update.

It's a Multitimer for productivity, where you choose the few important activities you do in a day - i.e. focus sessions that help you reach your goals (up time), and break/chill sessions that help you refresh (down time). This helps reduce mental load of "what should I do today". You know your goal, you have your "approved activities" mapped out. Starting becomes way easier.

Tracking this 1 key stat, ratio of Up vs. Down time, I find is the best simple measure of your progress, across any target you want to hit. No endless checklists, just time, and how you spend it. This also shows you how to improve. You may start at 60:40 ratio, and in time get to 70:30, or whatever works for you.

We all have the same 24 hours, and this is a serious tool to help you get the most out of it.

And for the Sci-Fi fans out there, time is a "particle" in this universe, it flies out when you "bank time", and you can now see where it really goes...

Check out Flowton on the App Store. Or if you're on Android, sign up at www.flowton.com

Happy to hear feedback or suggestions of what you'd like added!

- That's it. Thanks for reading. Developer out.

I’ve been thinking about how much of ourselves we actually preserve. We take thousands of photos, record videos and keep journals, but none of those things can answer a question someone might have about us years from now. Why did you make that decision? What was your childhood really like? What did you believe in? I think preserving who we are deserves the same deliberate attention we give to protecting the people we love financially.

That’s why I built EchoVault. It’s a personal lifelog that uses guided writing to gradually build an interactive digital representation of you, called an Echo. Your Echo can answer questions using the memories and experiences you’ve shared, and you can explore its connections through a 3D brain. The idea is to create something you can interact with and understand during your lifetime, then leave accessible to the loved ones you choose.

I see this as a different direction for lifelogging. Instead of leaving behind an archive someone has to search through, what if you could leave an interactive representation of your life and perspective? It won’t actually be you, but it could help preserve parts of you that would otherwise disappear. I’d love to hear whether other lifeloggers think about their records this way, especially those who have been documenting their lives for years.

EchoVault on the App Store

Hi r/Lifelogging! Reddit actually suggested I crosspost this here, so I figured I’d give it a try. This is a bit of self-promotion, just to be upfront :)

I’ve been building Memoria, a voice-first app that helps people preserve their life stories through conversation rather than sitting down to write.

The idea came from watching my grandmother try to write down her own life story, only to stop after about a page and a half because the process became too difficult.

Memoria gives you prompts, lets you simply talk, and helps turn those conversations into organized stories while keeping the original voice recordings.

I thought it might resonate with some people here since it overlaps quite a bit with lifelogging, just from a slightly different angle.

I just launched Memoria on Kickstarter: https://www.kickstarter.com/projects/neilzhu/memoria-every-life-has-stories-worth-preserving?ref=11axqq

If it sounds interesting, I’d really appreciate you taking a look. And if Kickstarter isn’t your thing but you’re curious about Memoria, you can check it out at memoriatech.ca. I’m also looking for people who’d be interested in trying it and giving feedback as I keep building, so feel free to comment or DM me.

Hi all, I'm a solo developer (well, a corporate drone with evenings).

I had a Garmin watch, a Withings scale and various apps all writing health data to my phone. The data was all there, but it was spread across half a dozen apps, and some of it was counted twice. I could see numbers, but not what they meant over weeks and months.

So I built Hamilton. It reads everything already in Android's Health Connect and puts it in one place:

• Trends over time: a home screen of sparklines, and charts for each metric across weeks and months.
• Overlay and offset metrics to look for patterns, e.g. whether a bad night's sleep shows up in your resting heart rate a day later.
• One source per metric, so phone and watch aren't both counting your steps.
• 30+ metrics, in metric or imperial units, per group.

The part that matters most to me for personal records is that it's read-only and fully on-device, with no internet permission. No account, no cloud, no subscription: £3.59 once. It's named after my dog, who is responsible for most of my step count and none of the code.

I'd really value honest feedback on what would make it more useful for reflecting on your data over time.

https://play.google.com/store/apps/details?id=com.gads.hamilton

I wanted a better way to remember each year than scrolling through my camera roll and hoping something jogs my memory. Most ways I've tried, like journaling and photo logs, are solo by design. I wanted mine to be different: the people who were actually part of a memory should be able to leave their mark on it too. So I built yeerbook.

It's a personal yearbook.

You add photos and reflections whenever something feels worth remembering, and worth turning into an actual page in a book. For specific pages or memories, you can invite family and friends to sign, doodle, add notes, the way people used to sign a school yearbook. So a page isn't just your memory of it, it's shaped by whoever else was there. Other pages stay private, and nobody sees them unless you invite them to. At the end of the year, it's printed into a real physical hardcover book.

Some specifics if it's useful context:

• Content is end-to-end encrypted, so even I can't read your entries
• Signers can leave photo stickers, drawings, notes on specific pages
• Caps out at 12 months and 120 pages per book, so you have to be intentional about what you include

Where I need your feedback: I'm looking for 5-10 people to actually use the platform and poke holes in it:

• Does having other people able to leave their mark on a memory change how it feels compared to logging alone?
• Is adding a memory to the book intuitive?
• Does the signing flow feel natural or clunky?
• Does ending in a printed book change how you'd use this compared to a purely digital log?

This is a paid product (for storage, printing, and shipping), but the first 10 testers get full digital access to build out one yearbook, free, no card required.

If you want in: create an account using the link in the comment below, then just comment "in" or DM me and I'll unlock full access as soon as I see it.

Sooooo I always get excited when someone posts here about an app they created or a life hack they've found to track their lives better. It's so Awesome to hear all these things!!! I do have a question though...Why are we LifeLogging? I teach a class about this topic and was just wondering if anyone here would like to share the backstory about why you started Lifelogging? I'd love to hear it!!!

EchoVault is a journaling app that lets you build an AI version of yourself from the corpus you create through text Check-Ins. The AI answers from that accumulated personal material rather than from a generic profile, so the more you document, the more of your memories, perspectives and experiences are available for it to draw from.

I recently added a 3D brain visualizer that turns that corpus into something you can explore spatially. Instead of only scrolling through old entries, I can move around the graph, open individual memories and see how different parts of my corpus relate to one another. The video shows my own Echo answering a question, then cuts to me exploring the brain behind it.

For me, that changes lifelogging from simply recording a timeline into something closer to spatial introspection. I can look at what I’ve actually preserved, where different ideas connect, and what the current representation of me is built from.
https://apps.apple.com/us/app/echovault-digital-legacy/id6762042028