Oli vs Cronometer: cycle-aware nutrition vs generic calorie tracking
Cronometer is the best micronutrient tracker available. Oli is the only tracker that reads your cycle. A side-by-side comparison.
What Cronometer does well
Cronometer is the most detailed nutrition tracker available. It tracks over 80 micronutrients — vitamins, minerals, amino acids, fatty acids — with verified data from USDA and academic sources rather than user-submitted entries. If you want to know exactly how much selenium, manganese, or vitamin K2 is in your diet, Cronometer is the tool for you.
For anyone with a specific micronutrient goal — iron for anaemia, calcium for bone density, selenium for Hashimoto's — Cronometer's precision is unmatched. Its data quality is genuinely better than most other trackers. If you want to know what's in your food, Cronometer tells you.
What it misses
Cronometer can tell you exactly how much iron you ate today. It cannot tell you that you need more of it because you're on day 3 of your period and losing iron through menstrual bleeding. The data is there. The context isn't.
Cronometer doesn't read menstrual cycle data from Apple Health. It doesn't shift calorie targets for the luteal phase. It doesn't activate anti-inflammatory mode during your period, or increase magnesium emphasis when your cycle data shows you're in PMS territory. The micronutrient intelligence is exceptional. The hormonal intelligence is zero. For women with endometriosis or PCOS, having great nutrient data without cycle context is only half the picture.
Feature comparison
Great nutrient data, plus cycle context
Know what you're eating — and what your body actually needs right now.
iOS first · Free to try · No card required