Alternatives to Natural Cycles
Temperature-based fertility and cycle tracking app, FDA-cleared as hormone-free birth control. The listings below can replace it for an important use case. Each note says what changes if you switch.
The original
Natural Cycles
Temperature-based fertility and cycle tracking app, FDA-cleared as hormone-free birth control.
Replacements
Listings that take over the same core job as Natural Cycles.
drip
Open-source menstrual cycle and fertility tracking app that keeps all entered data on your phone.
drip is free and open source, keeps all data on the phone and supports the symptothermal method, but is not described as FDA-cleared birth control and has no device sync.
Clue
Mobile app for tracking the menstrual cycle, with science-based predictions and insights.
Clue offers science-based cycle predictions and insights on a freemium model, but is described as a cycle tracker rather than FDA-cleared contraception or temperature-based tracking.
Flo
Mobile app for tracking periods, ovulation and pregnancy by logging cycle symptoms.
Flo tracks periods, ovulation and pregnancy with symptom logging on a freemium model, without FDA clearance as birth control or support for an overnight temperature band.
Similar software
Related functionality, not a direct replacement.
Oura
Companion app for the Oura Ring that reports sleep, activity, stress and heart health insights.
Ultrahuman
Companion app for the Ultrahuman Ring and other Ultrahuman devices that tracks sleep, recovery and metabolism.
