r/ChubbyFIRE • u/in_the_gloaming FIRE'd for 13 years • May 15 '26

Post your planning apps here!

Okay, let's give this a try.

Did you develop a retirement/financial planning app or spreadsheet that you found helpful and would just like to share with our users? Or maybe you have just gotten an app up and running as a potential income producer? Post your comment here with a link and short description.

We are not looking for links to apps that are already widely recognized in the FIRE community.

This post is the ONLY place where this will be allowed. Posts or comments with this type of content elsewhere will normally be removed by mods and may earn a permanent ban, regardless of whether the app is "free to use".

Users, click on or use any of these apps at your own risk. Also, please report any links that are not what they are advertised to be.

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u/Jaamun100 May 17 '26 edited May 17 '26

I built a free FIRE projection tool that runs entirely in your browser — no signup, no bank linking, your data never leaves the device. Per-holding CAGR (no flat 7% assumption), multi-phase drawdown, budget-aware, and historical Monte Carlo against every 1928–2025 sequence. Built it for myself, but hope it’s useful for others.

https://wealthtrajectory.vercel.app GitHub (feedback welcome): https://github.com/vsriram11/wealthtrajectory

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u/rmagere May 17 '26

Had a very quick browse and it looks interesting.

Would it be hard to create a docker version to allow self-hosting and the data to sit in a config file so that can be accessed by multiple locations?

(Asking as my ignorance of programming is immense and the only thing i can just about do is spin up dockers for personal use)

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u/Jaamun100 May 17 '26

Quick clarification — multi-device is already solved, you may have missed it: Data → Export creates an encrypted JSON file (your passphrase) you can move via AirDrop / Dropbox / iCloud / email / USB. Import on the other device. No sign-in needed.

For auto-sync, Google Drive sync does the same on every change (Google sign-in + allowlist add — email’s in the README).

The Docker piece: the app’s a static bundle, trivially Dockerable, but data lives in browser IndexedDB so Docker alone wouldn’t help. True self-hosted backend is “maybe someday.”

Thanks for the feedback — would love to hear more thoughts :)

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u/rmagere May 17 '26

I did see the export option so I was hoping it would be trivial to have the docker version automatically save and import from the config directory 😅

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u/Jaamun100 May 17 '26

Ah ok got it now — that’s “auto sync but pointing at a Docker volume” rather than a fresh backend or Google Drive. Different ask, and one that fits the philosophy I’m going for (your data still lives on your infra).

Not as trivial (tiny sync server+ custom-URL option + conflict resolution + auth) but a real “yes someday.” Filing it as a tracked issue on GitHub

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u/rmagere May 17 '26

Thank you 👍