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Building Sedonis · · updated 4 October 2026

Building Sedonis in the open

No launch hype, no growth deck, just honest weekly progress. Here’s how I’m building Sedonis, what’s shipped, and how to tell me what to build next.

By Tommy O’Connor, founder

Sedonis isn’t a faceless startup with a growth deck. It’s software made by one person who runs their own thing too, and wanted tools that respect that. So I’m building it the way I’d want to watch it built: in the open, one honest release at a time.

Why in the open

New software has a trust problem, and it should. You have no reason to believe a privacy-focused tool from someone you’ve never heard of. Reviews take time to earn, and I’d rather earn them than fake them.

So instead of testimonials I don’t have yet, I’ll show you the work: what shipped, what’s next, and where it falls short. Momentum you can watch is more honest than a wall of five-star quotes.

What’s shipped so far

  • Notch: cost, stock and profit for independent clothing brands.
  • Turnover: real profit per flip across marketplaces, without ever logging into your accounts.
  • Local-first storage with an opt-in Vault: your data starts on your device. Standard sync keeps a copy we can read; turn on Vault and it is encrypted on your device, so even I can’t open it.
  • The web app, which you can also install on your phone.

Next: Life, a third app for habits, journaling and goals, is in development. There is nothing to sign up for yet.

How to shape it

I read every email that comes in. If something’s missing, clunky, or wrong, that feedback is exactly how it gets good. Tell me at hello@sedonis.com.

If you want to follow along, the best way is to use it. Start with Notch or Turnover. You can export everything you put in.