Free iPhone Tools and Estimators
Section updated .
Six free tools for the iPhone decisions that involve numbers: whether your backup would actually save you, whether to replace a battery or the whole phone, how much storage a clear-out returns, when an upgrade is genuinely due, what a screen-time target means in app limits, and which iCloud tier you need. Each runs entirely in your browser, shows its formula, and needs no sign-up.
Every tool page states its method in plain words and works through a real example with numbers, so you can reach the same answer on paper if you prefer. Nothing you type leaves your browser, and nothing is stored.
The tools
iPhone Backup Readiness Score
Score your recovery setup out of 100 and see exactly which gap would cost you data.
Open the tool →Battery Replacement or Upgrade Estimator
Compare a battery replacement against a new phone on cost per year of remaining use.
Open the tool →iPhone Storage Cleanup Planner
Estimate how much space each cleanup step returns, and whether it closes your gap.
Open the tool →iPhone Upgrade Timing Estimator
Score upgrade pressure across support, battery, storage and age, and get a timing verdict.
Open the tool →Screen Time Budget Planner
Turn a daily target into per-app limits, and see what the cut is worth over a year.
Open the tool →iCloud Storage Plan Estimator
Find the iCloud tier your library actually needs, with growth and family accounted for.
Open the tool →How to use these well
Read your own figures off the phone before you start — battery health from Battery Health & Charging, storage from iPhone Storage, screen time from the weekly report. Typical values produce a typical answer, which is not useful. Where a tool asks for a price, use a quote you have actually been given rather than a list price, because the comparison is only as honest as the numbers in it.
Frequently asked questions
Are these iPhone tools free?
Yes, all of them, with no sign-up. Each runs entirely in your browser, so nothing you enter is sent anywhere and nothing is stored after you close the page.
Do the tools read anything from my iPhone?
No. You type in figures you can read from your own Settings screens, and the calculation happens locally. There is no connection to your device or your Apple Account.
How accurate are the results?
They are estimates built from stated formulas, and each page shows the method in words so you can check the working. Enter figures from your own phone rather than typical values for the most useful answer.
Do they work offline?
Yes. The pages and the calculations are entirely self-contained, so they work with no internet connection once the page has loaded.
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