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HVAC technicians juggle a PT chart booklet, 2-3 separate reference apps, and handwritten reports on every service call. RefriPro puts all of it in one offline Android app.
- PT chart calculator for 50+ refrigerants
- Superheat/subcooling calculator with 6-state diagnosis ā not just a number, but what it means
- 754 error codes across 8 major brands (Carrier, Daikin, Trane, Lennox, Mitsubishi, LG, Fujitsu, Samsung)
Everything runs locally. No internet required. Free on Google Play.

RefriProOffline PT charts,error codes,service reports for HVAC techs
SognoraGroupleft a comment
I started RefriPro because I kept hearing the same complaint from HVAC techs: "I need three apps and a paper chart just to do basic diagnostics." The typical workflow looks like this ā open one app for the PT chart, another for error codes, pull out a booklet for the obscure brand, then write the report by hand back in the truck. Half of this happens on a rooftop with no cell signal. So I built...

RefriProOffline PT charts,error codes,service reports for HVAC techs
Every expense tracker asks you to type merchant, date, amount, and category for every single receipt. That's 5 minutes per entry ā and the reason most people give up after a week.
Receipt Snap replaces the typing with a photo. Point your camera at a receipt, and Gemini AI extracts the fields in seconds. You review, edit if needed, and save. Done!

Receipt SnapSnap receipts, Gemini AI fills the rest in 3 seconds
SognoraGroupleft a comment
I kept putting off logging receipts. Coffee, lunch, office supplies ā each one needed me to open an app, pick a date, type a name, enter an amount, choose a category. By the time I was done, I'd spent five minutes on something that should take seconds. So I built Receipt Snap. You take a photo of a receipt, Gemini AI reads it and fills in the fields, and you just check that it looks right...

Receipt SnapSnap receipts, Gemini AI fills the rest in 3 seconds
NeiboCheck helps renters in Germany do a first-pass review of a `Nebenkostenabrechnung` before reacting. Instead of acting like legal advice, it flags suspicious or manual-review items, keeps deadlines visible, and shows what to question next. It is built for the moment when a high `Nachzahlung` lands and the renter is not sure what deserves a second look first.

NeiboCheck: Nebenkosten-CheckCheck German utility bills before you react
SognoraGroupstarted a discussion
A calmer first-pass review flow for German utility bills
Iām continuing to tighten NeiboCheck for renters in Germany who want a first-pass review before reacting to a `Nebenkostenabrechnung`. This update cleans up the public launch surface and keeps the feedback loop moving.
SognoraGroupleft a comment
I built NeiboCheck after seeing the same renter problem come up again and again: a Nebenkostenabrechnung arrives, the total feels off, and nobody knows what to check first. This is a first-pass review tool, not legal advice. I would really like blunt feedback on what feels useful, missing, or confusing.

NeiboCheck: Nebenkosten-CheckCheck German utility bills before you react
