Every exercise
your muscles
need.
Muscel includes a full exercise library organized by muscle group — each one paired with target muscles, recommended rep ranges, and cues for proper form. Pick an exercise, log your sets, and your projections update automatically.
Know your target
before you
touch the bar.
For every exercise, Muscel shows you three goal sets for today — Conservative, Realistic, and Reach — each calibrated to your current strength and the tier you're working toward. No guesswork, just the weight and reps that move you forward.
Milo keeps you
accountable.
Your figure keeps you accountable to your routine. Stick to the plan, log your sessions, and hit your progress goals, and the muscle groups you train start to develop on Milo or Mila.
The change is specific to each muscle group: train chest and the chest grows, progress your back work and the back fills out, stay consistent with legs and the lower body follows. The more you earn, the more buff the figure becomes.
Pick the goal. Watch the plan assemble.
Muscel generates routines from the pieces that actually decide a useful plan: your goal, training experience, weekly availability, equipment limitations, recovery pattern, and current strength data. The routine logic is grounded in established resistance-training research on loading, volume, progression, and repetition ranges.
Tune the routine
without starting
over.
Muscel gives you the tailored plan first. Then you can fine-tune the session around what you actually want to do today, while keeping the generated structure intact.
Swap what
doesn't fit.
If equipment is taken, a joint feels off, or you want a cleaner match for the day, swap a set while preserving the muscle target, goal, and progression intent.
Duplicate the
work that hits.
When a set belongs in the session, duplicate it fast and keep the same load, reps, target, and exercise context without rebuilding the workout by hand.
Delete the extras.
Keep the plan
sharp.
Remove sets that do not fit your time, recovery, or equipment. The generated routine stays tailored, just cleaner and easier to execute.
Predict your
next lift.
Muscel uses a machine learning model to estimate the weight and reps you are most likely ready for next, based on your lift history and how that exercise has been progressing over time.
See your future
trajectory.
As more lifts are logged, the model learns the shape of your progress and projects where the lift is headed. Your chart becomes a forward-looking view of the path you are building.
Built from
your actual
history.
The prediction updates every time you log. One missed day, one stronger set, or one new PR changes the model, so the next recommendation follows what you are actually doing.
Every lift has a rank.
Watch yours climb.
Muscel maps your estimated 1RM against real-world standards for each exercise. Your tier updates every session — across all 49 tracked lifts.
Built for people who take their training seriously.
Download Muscel on iPhone and turn every session into data you can use.
Built by people who lift.
We'd love to hear from you.
Questions, feedback, bug reports — reach out. We read everything.
Currently Muscel is Free to use, but there are plans to include a paid subscriptions in the future.
Not yet. Muscel is iPhone only for now.
Muscel's ML model analyzes your training history to project your 1RM trajectory. It factors in volume, frequency, and recovery to give you conservative, realistic, and reach-goal projections.
Yes. Muscel supports custom exercises on top of the 49 preset lifts. Custom exercises need at least 2 sessions before a projection generates.
Your tier — Beginner through Elite — reflects how your estimated 1RM compares to real-world strength standards for that exercise. It updates automatically as your numbers improve.