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You lift. Your AI coaches.

Strict is an iPhone training log that your AI assistant can read and program. Ask it for an 8-week block and the program is in Strict after the next sync. Then you log the sets, and it can see how they went.

Works with Claude, ChatGPT, Cursor and other MCP assistants. The log is free; the AI coach is Strict Pro, free during the beta.

Your assistantStrict connected

I want a clean tuck planche past 15 seconds and stronger weighted pull-ups. Build me an 8-week block.

get_exercise_historyTuck planche · 9 sessions

Your best clean hold on the floor is 14 sec, and it hasn’t moved in three weeks. Planche leads the block, weighted pull-ups come second, compression stays light, and week 8 is a deload.

create_programPlanche + pull strength · 8 weeks

activate_programStarts this week

It’s on your iPhone after the next sync, starting this week.

Strict showing the program Planche + pull strength: week 1 of 8 this week, with planche as the high training emphasis.

Sample conversation and training data.

Planning happens in chat. Training happens here.

Between sets your hands are tired and you don’t want to type. Strict opens the next set already filled in from the last one, so logging it is usually one tap.

Strict's log sheet for set 3 of Tuck planche: 13 sec, one more than set 2, above a Log 13 sec button.
Try it: tap Log.
Strict's review after finishing: 4 of 12 sets, 3 clean, with every set drawn as a stroke and the form-broken hold outlined.
Finish, and the review draws every set.

  • Every number says where it came from

    The next set starts from your last set or last session, and says which. Change it with a drag or a tap.

  • Undo instead of “Are you sure?”

    Logging is one tap. If you got it wrong, Undo stays on screen for ten seconds.

  • Rest on your Lock Screen

    The countdown runs on the Lock Screen and in the Dynamic Island, and you can log the next set without opening the app.

  • Saved on your iPhone first

    Every set saves on your phone the moment you log it, so a basement gym with no signal is fine.

Bring the assistant you already use.

Strict connects to assistants through MCP, the open protocol Claude, ChatGPT and Cursor use to work with other apps. After one setup, your assistant can read every workout you log, and write programs if you let it.

  1. Train with Strict

    Log your workouts on your iPhone. That works without an account, and without signal in the gym.

  2. Connect your assistant

    In Strict’s Settings, choose Connect an assistant and sign in with Apple. Then add this address as a connector in Claude, ChatGPT or Cursor. Connecting an assistant is part of Strict Pro, which is free during the beta.

    https://api.strict.training/mcp

  3. Decide what it can do

    Your assistant can always read. Turn on Allow edits and it can also create and change programs, saved workouts and custom exercises, but never a set you’ve logged.

  4. Ask like you’d ask a coach

    Your assistant sees the same history you do, including the setup of every set. Tap a request to copy it.

Progress that only counts clean sets.

Strict only compares a set with sets done the same way, so a banded hold never counts as progress on a strict one. Your assistant reads the same history, with the setup attached to every set.

Tuck planche

Floor · Full hold · 9 sessions

↑ 5 sec in 7 weeks

Best clean hold

14sec

Sat 10 Oct · Latest

22 AugToday
Sample data. Holds on parallettes would be a separate series.

  • Clean, form broke or failed

    A set where your form broke, or one you failed, stays in your history but never counts as a best.

  • Same setup, same series

    Every set records its variation, apparatus, assistance and range of motion, so an easier setup can’t inflate your best.

  • Next targets, on your say-so

    When every set hits the top of the range, Strict suggests a next target. Nothing in your plan changes until you accept it.

Next time

Weighted pull-up Up 2.5 kg

4 × 4 at 12.5 kg

Every set was clean at 10 kg.

Your training starts on your iPhone.

You don’t need an account to use Strict. You sign in only to connect an assistant, and you decide what it may change.

  • Workouts, programs and settings stay on your iPhone and in the backups you make.
  • With an account, a copy of your training syncs to Strict’s server so the assistants you connect can read it.
  • Each assistant gets read access, and edits only if you allow them. None can change a set you logged.
  • Disconnect an assistant in Settings and it loses access within about a minute.
  • Delete your account and Strict deletes the server copy. Your workouts stay on your phone.

Read the privacy policy

Connect an assistant

Allow Claude to access your training?

  • Access goes to claude.ai.
  • Signed in to Strict with Apple.
The page your assistant opens when it asks for access.

Start free.

The training log is free. The AI coach is Strict Pro, and it’s free while Strict is in beta.

Strict

Free

No account needed

  • Unlimited workouts, sets and history
  • Programs, saved workouts and Quick workouts
  • Progress from clean sets in Analyze
  • Rest on the Lock Screen and in the Dynamic Island
  • Backups you keep

Strict Pro AI coach

Free

During the beta

  • Everything in Strict
  • Connect Claude, ChatGPT, Cursor or any MCP assistant
  • Your assistant reads every workout, set and trend
  • With Allow edits, it writes and adjusts your programs

Questions

What’s free, and what’s in Strict Pro?

Everything you need to log and track training is free, including programs, saved workouts, Analyze, rest and backups. Strict Pro adds the AI coach: an assistant such as Claude, ChatGPT or Cursor that reads your training and, if you allow it, writes your programs. Pro is free during the beta.

Which AI assistants work with Strict?

Assistants that can add a remote MCP connector, including Claude, ChatGPT and Cursor. In ChatGPT, custom connectors may need developer mode.

Do I need an AI assistant to use Strict?

No. Programs, saved workouts, Quick workouts, rest and progress all work without one.

What can my assistant see and change?

It can read your workouts and sets, programs, saved workouts, exercises and progress over time. If you turn on Allow edits, it can also create and edit programs, saved workouts and custom exercises, and switch your active program. It can’t change or delete a workout or set you recorded.

When do my assistant’s changes reach my phone?

The next time Strict syncs, outside a workout. A change never lands in the middle of a workout you’re logging.

Do I need an account?

Only to connect an assistant, and then you sign in with Apple. Your training is still saved on your iPhone first.

Does Strict work for gym lifts and calisthenics?

Yes. Squats and bench press log as reps and weight; planche, levers and handstands log as holds or reps. Each setup keeps its own history, so a banded hold never mixes with a strict one.

Does it work offline?

Yes. Every set saves on your iPhone first, and syncing to your assistant waits until you’re back online.

Is there an Android or web version?

Not today. Strict is for iPhone.

Your next workout is one message away.

Once Strict is on your iPhone, connect the assistant you already use and ask it for your first block.

See the appFree to start