Your health record, projected forward.
PredictFit pulls the Apple Health data you choose into one record, shows where your weight, goals and readiness are heading, and lets your own AI assistant work from it - on your terms.
For iPhone. Android is planned. PredictFit is not a medical device and does not provide medical advice.
Your record
PredictFit reads the data types you allow from Apple Health - weight, nutrition, workouts (including Apple Watch workouts), sleep and resting heart rate - and keeps them together in one record, each entry on the date it actually happened.
You decide which types PredictFit can read, and you can change that at any time in the Health app on your iPhone.
Predictions
From that record, PredictFit projects trends rather than just listing numbers:
- Weight trajectory - the direction and rate your weight is moving, based on your recent history.
- Time to goal - an estimate of when you would reach a weight goal if the current trend holds.
- Readiness - a read on recovery from sleep and resting heart rate, and what tomorrow is likely to look like.
Projections are estimates computed on your device from your own data. They are not medical advice.
Your AI, your rules
PredictFit does not run AI itself. If you already use Claude or ChatGPT, you can connect it to your PredictFit record through a standard connector (MCP). When connected:
- Your assistant reads only the areas of your record you allow.
- It can add entries - for example a meal or a workout you describe in chat. Every one is labeled "Added by AI" in the app, and you can edit or delete it.
- You can disconnect at any time, from the app or from your assistant's settings.
You are not required to connect an assistant. PredictFit works on its own.
Connect your AI in 4 steps
- Open Claude or ChatGPT and go to Settings, then Connectors.
- Choose Add custom connector.
- Paste the PredictFit connector address shown on the Connect page.
- Sign in with your PredictFit account and choose what the assistant may read and add.
Pricing
$4.99 / month
One plan. First month free. Billed by Apple through your App Store account.
- Cancel anytime in your App Store subscription settings.
- Restore Purchases is available in the app if you reinstall or change phones.
Payment is charged to your Apple ID account when the free month ends. The subscription renews automatically each month unless you cancel at least 24 hours before the end of the current period. You can manage or cancel it in your App Store account settings at any time. Any unused part of a free trial is forfeited when you purchase a subscription.
Questions
Does PredictFit use AI?
No. PredictFit does not run AI itself. It reads your Apple Health data, keeps it in one record and computes projections from it. Connecting your own assistant (Claude or ChatGPT) is optional and under your control.
What data does it read?
Only the Apple Health types you allow: weight, nutrition, workouts (including Apple Watch), sleep and resting heart rate. You can change access at any time in the Health app on your iPhone.
Where is my data stored?
On your device, and in your PredictFit account so the connector can serve it to your assistant when you allow it. See the privacy policy for details.
Can I delete my data?
Yes. In the app, open Profile, then Delete Account. This removes your data from the device and from PredictFit's servers. See Delete your account.
Is this medical advice?
No. PredictFit is not a medical device and does not provide medical advice. Projections are estimates from your own data. Talk to a healthcare professional about any health decision.
Is there an Android version?
Not yet. PredictFit is currently for iPhone. Android is planned.
How do I cancel?
Subscriptions are billed by Apple. Cancel in your App Store account settings (iPhone: Settings, your name, Subscriptions). Deleting the app does not cancel a subscription.
How do I get help?
Email support@predictfit.app or visit Support.