CRONOMETER — 9/10
Best micronutrient tracker available. Breaks down minerals, vitamins, amino acids from whole foods with exceptional accuracy. Essential for anyone on the Mineral Cyclic Diet to verify food-based intake. Free tier sufficient for most users. Premium adds biometric correlations.
OURA RING APP — 8/10
Pairs with the Oura ring. Best sleep staging data on consumer wearables. HRV, respiratory rate, body temperature deviation. The app itself is clean, but value is entirely dependent on the hardware.
ZERO — 7/10
Fasting tracker. Simple, reliable, good streak tracking. Lacks micronutrient integration which limits its utility alongside MCD.
APPLE HEALTH — Baseline
Not a standalone app but the integration layer for everything else on iOS. Export your data regularly. Do not rely on any single app's data silo.
FLACKO (HRV) — 8/10
Dedicated HRV measurement via camera (no wearable required). More accurate than Garmin for spot checks. Use first thing in the morning before getting out of bed for consistent baseline readings.
APPS WE DO NOT RECOMMEND
MyFitnessPal: Terrible micronutrient data quality, privacy concerns, upsell-heavy
Noom: Pseudoscientific coaching layered over basic calorie restriction
Lose It!: Marginally better than MFP but same structural problems