
Know when to push and when to back off
Every set you log adds load to the tendons and muscles it trains and fades as you recover, so you can see which areas need an easier day.
Calisthenics, built by a practitioner
ApexCalis is an iPhone app with full programs for men and women, a tendon & muscle load map that tells you when to push and when to back off, and on-device AI form checks.
Coming soon · iOS 17.6 or later


Every set you log adds load to the tendons and muscles it trains and fades as you recover, so you can see which areas need an easier day.

Film a planche, front lever, handstand, L-sit or human flag, and the app measures your arm lock, body line and joint angles against its 7-point check.

A men's weekly program from Foundation to Elite and a women's program in three stages, with an easier and a harder version of every exercise.
Pick your level once and the whole week follows. Five levels: Foundation, Base, Skill, Advanced and Elite.
On levels 1 and 2 the days have their own names and build toward these skills.
A max test closes every phase.


Film from the side, live or from a video, and the app checks your form against its 7-point check: the performance points first, then the line.
Performance · Force
Aesthetic · Leverage
Shown for the planche. The front lever, handstand, L-sit and human flag have their own shoulder and line checks.
Analyzed on your iPhone, never uploaded.
An estimate from a single 2D camera. Film side-on, in good light, with your whole body in frame.


Step-by-step courses for one skill at a time: three short sessions a week, done first in your workout next to your program. The Academy also has mindset, the 7-point form guide and an exercise library.
Start free and train with the core of every day. Pro unlocks everything.
See the price in the appPrices depend on your country. Cancel anytime in your App Store settings.

No. ApexCalis works without an account and keeps your training on your iPhone. You can add an optional account later if you want backup and sync.
Yes. Programs, the rest timer, the load map and Vision AI run on your iPhone. You need a connection to subscribe or restore a purchase, back up to your account and open exercise video links.
Any iPhone with iOS 17.6 or later: iPhone XS, XR, SE (2nd generation) and newer. The app is made for iPhone.
English, Swedish, Persian, Arabic, French, Russian and Spanish. The app follows your iPhone's language, and you can change it in the app's settings.
No. ApexCalis gives training guidance, not medical advice, and it isn't a medical device. The load map and form scores are estimates. Stop if you feel sharp pain, and see a doctor or physiotherapist about injuries.
Pro is a subscription billed by Apple. Cancel it in your iPhone's Settings › your name › Subscriptions at least 24 hours before the period ends. Deleting the app doesn't cancel it.