Free tool
iPhone Battery Health Estimator
Estimate battery health, cycle count, and future wear from your model, purchase date, and usage pattern. Runs entirely in your browser.
Estimate battery health
Estimated result
This is a mathematical estimate based on model capacity, days owned, and your selected usage pattern. A website cannot read your iPhone's internal analytics logs, so exact cycle count requires device data.
Runs entirely in your browser. Nothing is sent, stored, or logged.
Battery Health Pro
Use Battery Health Pro on iPhone for real cycle count tracking, battery health scoring, degradation forecasts, and exportable records.
Battery health questions
Can a website read my exact iPhone cycle count?
No. A browser tool cannot read iPhone analytics logs or battery diagnostics. This page gives a private estimate from the information you enter.
How is battery health estimated?
The estimator combines your selected iPhone model, purchase date, and usage pattern with a simple cycle-based degradation model.
Is anything sent to NextTap?
No. The calculation runs locally in your browser, and the values you enter are not sent, stored, or logged.
A free tool by NextTap. Runs entirely in your browser.