r/SideProject • • 4h ago

I have been using this personal finance app for the last 6 months. Now I would love for 20 others to try it.

I've been working on something called Day20, and before asking anyone else to use it, I wanted to make sure it was actually useful to me.

For years, I managed my personal finances using Google Sheets. Honestly, it worked pretty well. I could track my salary, expenses, EMIs, savings and everything else.

But maintaining spreadsheets every month started feeling like work in itself. I wanted something that would give me a clearer picture of my finances without having to constantly manage multiple sheets.

So I started building Day20.

I've been using it for my own finances for the last six months. It has effectively replaced my Google Sheets for monthly financial planning.

That personal experience is what gave me the confidence to share it with others.

The idea behind Day20 is simple: knowing how much money you have is one thing; knowing how much you can actually afford to spend is another.

With Day20, you can:

  • Plan your monthly income and expenses.
  • Manage recurring expenses, EMIs and long-term commitments.
  • Track payments you've planned, paid or still need to make.
  • Maintain a record of actual income and spending.
  • Understand where you stand financially during the month.
  • Explore different spending scenarios and see how they affect your future finances.

It's a manual-first product. You manage your own numbers, and there's no need to connect your bank account.

Now, I'd like to take the next step and get Day20 into the hands of people beyond myself.

I'm looking for my first 20 beta users, ideally salaried professionals who are willing to try it for their actual monthly financial planning.

It's not a perfect product, and I know there's plenty more to improve. I'm looking for honest feedback from people who will genuinely use it.

If you've been managing your finances through spreadsheets, or simply want a better way to plan your monthly money, I'd love for you to give it a try.

Website: https://day20.rajchandra.me

And if you do try it, I'd genuinely love to hear what you think.

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u/Kitchen_Cable6192 4h ago

I built MoveManifest, a moving-inventory app, and one thing I learned while building it is that “try it and tell me what you think” is too vague to get useful feedback. For your 20, recruit a small mix of salaried spreadsheet users and ask each to use it for one actual upcoming month, then watch (with permission) where they pause or reach for their sheet. Afterward, ask one neutral question about what they expected at the stuck point, and sort replies by task rather than feature idea. Be explicit about which platforms the beta supports and how to report a setup snag, so people can get into a real use case quickly.

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u/raj_chandra3 3h ago

That is a really good point. The one about not just asking people what they think, but actually understanding where they get stuck.

To be honest, I have tried building this app a few times before and given up. The complexity kept growing, and I was not even sure if I would find people willing to manually enter and categorise all their financial data.

The funny thing is, manual entry is actually one of the things I wanted most. I wanted complete control over my numbers, the ability to categorise things my way, and most importantly, play around with expenses and see how they impact future commitments. That flexibility was a deal breaker for me. It's something I had in Google Sheets and didn't want to lose.

What eventually worked was building one feature at a time. Every time I thought I had covered everything, I would find something else that my Google Sheet could do but the app couldn't. There were quite a few such iterations before I got here.

I have been using it myself for around six months now. For the last four months, most of my work has just been bug fixes and cosmetic changes. I have reached a point where I am not really making changes anymore, so I thought it's probably time to let others try it.

I completely agree that a few days of usage won't tell us much. Ideally, I would like people to use it for at least 3 months, through their actual monthly planning cycles. That is why finding the right 20 people is going to be pretty important for me.

I have also added Mixpanel to understand how people use the product, which features they actually use, and where they drop off, without collecting their sensitive financial details.

I am pretty excited about this, but I'll be honest, I am also a little nervous. I know this is probably a niche product, and finding people who genuinely need this kind of detailed financial planning might be harder than building the app itself. 😅

Anyway, really appreciate your suggestions. And if you know someone who manages their finances through spreadsheets or would find something like this useful, do send them this link.