Features
Built for the rest between sets
Sets in a tap
Rest, on the clock
Every PR, caught
Muscles at a glance
Plus
Runs from Apple Health
Log from chat
Better with Nibble
Train in Heft. Eat in Nibble.
One account
Same sign-in in both apps
One Plus
Buy once, both unlock
Fuel your training
Food and lifts, side by side
Assistants
Log from ChatGPT or Claude
Connector URL
https://heft.pstepanov.dev/api/mcp
Try a prompt
1
Add Heft as a connector
2
Sign in and approve
3
Ask in plain words
Free on every plan. Revoke any time.
Pricing
One Plus, both apps
Free
$0
forever
Workout logger and exercise library
Rest timer and history
Records and the weekly streak
Saved to your account, synced to every device
Apple Health workouts
Assistant logging over MCP
Up to 5 routines
Plus
7-day free trial
$3.99
/mo
Monthly
$3.99 /mo
Yearly
7 days free
$24.99 /yr
Lifetime
$59.99 once
Everything in Free
Unlimited routines
Muscle heat map, e1RM trends, overload hints
Nibble Plus included
FAQ
Good to know
Yes, for good. Logging workouts, the exercise library, the rest timer, history, records, the weekly streak, and Apple Health are free, with up to 5 routines, and an assistant can log 3 times a day for free (then 1 Spark each). Your log is saved to your account and syncs to every device you sign in on, free. Plus adds unlimited routines, the muscle heat map, e1RM trends and overload hints, and Nibble Plus.
Yes. Heft and Nibble share one account and one Plus. Buy it in either app and both unlock, including photo calories and the weight forecast in Nibble. Photo logging in Nibble is 30 a day with a subscription; Lifetime includes 40 a month.
The yearly plan starts with 7 days free. You get a reminder on day 5, and billing starts on day 7 unless you cancel. Monthly and lifetime have no trial.
Yes, on iPhone. Heft can save your workouts to Apple Health and bring in runs, rides and other workouts from Apple Watch or other apps, so nothing is logged twice. You choose what it reads and writes.
ChatGPT, Claude, and any assistant that supports MCP connectors. Add the Heft address as a connector, sign in, then ask it to log a workout or check your week. Reading is always free; logging is free 3 times a day, then 1 Spark, and unlimited with Plus.
No. Heft is not a medical device and doesn't give medical advice. Records, estimates and hints are approximate; talk to a professional before starting a new program.
Soon, on the App Store for iPhone and iPad. You can start on the web today, and the same account carries over.