A Reef-Tank Parameter Tracker Built To Outlive Its Own Company, For Hobbyists Burned By Abandoned Apps
Reefkeepers have watched tracking app after tracking app get abandoned or flip to subscription, and Apex Fusion locks logging to Neptune's hardware, so many serious hobbyists keep parameters in a notebook or spreadsheet rather than trust another app with years of data. The opportunity is a hardware-agnostic reef parameter logger with a credible longevity story: open formats, plain export, and a pay-once or self-hostable model.
Your competitor isn't another app, it's a notebook chosen out of distrust. Sell longevity explicitly, one-time price or self-host option, plain-CSV export, no hardware lock, because the buying objection is 'will you still exist in five years,' not features.
landscape (3 existing solutions)
The reef-tracking category isn't empty, it's a graveyard. Hobbyists won't pour years of data into another app that might vanish, so they default to spreadsheets.