calvinI was trying to gain weight, which meant tracking calories every day. Every app I tried made that harder than it needed to be. Logging a plain meal in MyFitnessPal meant a search screen, a results list, a serving-size screen, and a confirm, every time. So I built the app I wished existed: open it, log, done.
Calvin is built by one person — me. I was trying to eat enough, and gaining weight on purpose means actually knowing your numbers, since "eat more" isn't a plan. MyFitnessPal was fine for a week, then the friction added up: four screens for something I do from memory. Barcode scanning, the fast path, was behind a subscription. So was the one thing that would've actually helped: seeing whether I ate more than I burned across a week rather than a single day.
That's not a knock on MyFitnessPal. It's an old app that works for a lot of people, just not for me, and switching apps in the same category didn't fix the real problem: logging a meal took too many screens no matter which one I opened.
Barcode scanning and food search stay free with no cap — paywalling the fast way to log a food just means people stop logging. There's no account, because writing down what you ate shouldn't require signing up first. The weight trend line and adaptive calorie target exist because a single day's number on the scale lies constantly, and a formula shouldn't pretend it knows your maintenance calories better than your own weigh-ins do.
I still use Calvin every day — it's how I track my own weight, and the reason the adaptive target and trend line exist in the first place.
The drier version — what's free, what Calvin Plus costs — is the press kit.
[email protected] reaches me directly, not a support queue.
Try Calvin
Barcode scanning, food search and full macros are free, with no account and no scan limit. Your log stays on your phone.
