Support

Yes. Without paying anything you can log your workouts, keep your full history, track personal records, and use the app offline. You also get iCloud Sync, 3 templates, 10 custom exercises, and 30-day and 90-day progress charts for any exercise.

KILO runs on iPhone and Apple Watch. You will need iOS 26 or later on your iPhone, and watchOS 26 or later for the Apple Watch app, which comes with KILO Pro.

Some features depend on your iPhone. Live Activities show up on the Lock Screen, and in the Dynamic Island if your iPhone has one. AI workout summaries need a supported iPhone running iOS 27 or later, with Apple Intelligence switched on, and an internet connection to use Apple’s Private Cloud Compute.

No. Download KILO and you can start logging straight away, with no sign-up, and iCloud Sync works without an account too. The only reason to create one is KILO Sync, which comes with KILO Pro.

Yes. The iPhone app is complete on its own. If you do wear one, the Apple Watch app that comes with KILO Pro lets you start a workout, log your sets, and follow your rest timer from your wrist, with your live heart rate on screen while you train. No Watch? Wear compatible AirPods or a heart-rate sensor during a workout and KILO can record your heart rate from them, which you can view as a heart-rate timeline with KILO Pro.

Open Settings in KILO and switch Unit System between Kilograms and Pounds. Everything you have already logged is converted for you, and if you switch back your original numbers return exactly as you entered them.

Not yet. Email us and tell us which app you are moving from, because that is how we decide which imports to build first. Going the other way, KILO Pro can export your whole history as a CSV file whenever you want a copy of your data.

KILO Pro gives you the Apple Watch app, unlimited templates and custom exercises, and deeper progress tracking: progress over six months, a year or all time, muscle group breakdowns, strength goals, and heart-rate timelines for any workout that recorded heart rate, such as one tracked with your Apple Watch, compatible AirPods, or a heart-rate sensor.

It also adds AI workout summaries through Apple’s Private Cloud Compute, rest timer alarms, Live Activities with workout controls on the Lock Screen and in the Dynamic Island, KILO Sync across your devices, and CSV export of your history.

KILO Pro is £1.99 a month, or £14.99 for a year, which works out about 37% cheaper than paying monthly. You can subscribe from anywhere you come across a Pro feature in the app.

Your subscription is held by Apple rather than by us. Open Apple’s subscription settings, choose KILO, and you can move between monthly and yearly or cancel from there. If you cancel, Pro stays on until the end of the period you have already paid for.

There are two ways to sync, and you choose one in Settings. iCloud Sync is free and keeps a private copy of your training in your own iCloud account, rather than on KILO’s servers. KILO Sync comes with KILO Pro and keeps your devices in step through your KILO account. Only one can be switched on at a time.

KILO uses your logged training patterns and the experience level you chose or it inferred from your history to show factual progress and workout suggestions. This happens on your iPhone without sending training data to a server. You can turn Insights off in Settings.

After training, choose Generate to create a short recap. KILO sends workout details to Apple’s Private Cloud Compute servers for processing, including sets, duration, volume, muscles worked, notes, personal records, goals, recent comparisons, and available heart-rate summaries. Generation requires an internet connection.

You will need KILO Pro and a supported iPhone running iOS 27 or later with Apple Intelligence switched on. Saved AI summaries can be read offline. If generation is unavailable, KILO tells you why and the rest of your workout summary remains available.

Only with your permission. KILO can read live heart rate during a workout. If an Apple Watch HealthKit session is active, finishing the workout can save it to Apple Health. A temporary iPhone session used for live heart rate is discarded instead, while your logged workout remains in KILO. Manage Health permissions in Apple Health or Settings.

To clear your workouts, open Settings in KILO and tap Reset All Data. If sync is on, you can choose to erase only this device or both this device and its iCloud Sync or KILO Sync data. Deleting the app removes its local data from that device; synced copies and Apple device backups are separate.

If you have a KILO account, choosing Delete Account in your account settings permanently deletes it, along with everything stored in KILO Sync. Workouts saved on your iPhone stay where they are, and KILO Pro keeps billing until you cancel it in Apple’s subscription settings. The Privacy Policy covers exactly what we delete.

Email KILO Support and tell us what went wrong, what you were doing just before it happened, and which iPhone and iOS version you are on. A screenshot always helps. Feature requests are just as welcome — plenty of what is in KILO today started as one.