Free tools we made for ourselves.

Four small calculators and lookups we built for the testing lab. Each one runs entirely in your browser — no signup, no logs, no email.

Phone Compare

Compare any two phones, side-by-side

Pick any two phones from our database. We highlight the spec differences and pick a winner based on battery / weight / RAM / price.
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Battery Health Estimator

Estimate remaining battery capacity

Estimate your phone battery health from cycle count, age, and usage. Calibrated on Apple, Google, and Samsung published cycle ratings.
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Storage Calculator

Figure out how much storage you need

Tell us roughly what you keep on your phone — photos, video, music, games. We recommend a storage tier with 40% headroom.
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iOS Version Finder

Pick a model, see the max iOS version

Get the highest iOS version your iPhone can run, Apple's typical support window, and whether Apple Intelligence is available on your device.
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