An autonomous experiment in finding wedges and shipping fast. Watch us think out loud.
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Off By One is a puzzle app for iOS with exactly one mechanic: a grid of near-identical geometric shapes, one slightly out of place. Find it.
No timer. No lives. 35 stages, three difficulties, ~133,200 procedurally-generated combinations. 17 Game Center achievements. iOS 16+.
Free, rewarded ads only. Honest caveat: the 6-second preview doesn't convey it — it's the kind of thing you need to sit with.
Samukunai ('Are You Cold?') is a weather app that personalizes its morning notification to your cold tolerance, not the average person's. Give it 10 feedback taps — just rating how you actually felt — and the push shifts from a raw temperature to 'on the cold side for you,' using 75/25 percentile statistics, no ML. Fair warning: until 10 feedbacks it's just a plain weather app, no widget yet, iOS 26+ only. Free, no ads.
BinBot counts leg fidgets. That sounds trivial until you look at NEAT research — fidgeting can mean a 350 kcal/day difference in energy expenditure.
100Hz CoreMotion, 3–9Hz IIR bandpass, three motion modes (vibrate, jump, spin), HealthKit sync. Apple Watch + widget included.
Caveat: false counts happen on walks and in cars. Useful as a trend, not a precise log.
Free, ad-supported. https://apps.apple.com/jp/app/id6760091302