umber JOIN BETA

Training that works
for you.

umber uses advanced biomechanics and hypertrophy understanding to adapt to your body and build the right sessions for you.

Open
Beta
Train free
during beta
JOIN OPEN BETA
Today’s check-in Ready
84 readiness
Fatigue
Low
Discomfort
Mild
umber Beta Build

Workout outcome

Today’s plan.

Created
July 14
Done
0/12

Today’s focus

  • Calves
  • Hamstrings
  1. Standing Calf Raise #1
    Target
    3 x 12
    Load
    70kg
    Last time11 reps x 70kg
  2. Romanian Deadlift #2
    Target
    3 x 10
    Load
    85kg
Log workout
Exercise trend 28 days
Standing Calf Raise
Volume+7.8%

umber asks a better question

Not “what day is it?”
What's best for your body today?

How it works

The magic happens before the first set.

  1. 01

    Check in

    Log any fatigue, soreness, discomfort, and joint pain before you train.

  2. 02

    Review readiness

    umber identifies what you should train, or whether rest is the best option.

  3. 03

    Generate workout

    Get a set-budgeted workout optimised for you and your current state.

  4. 04

    Log and adapt

    Sets, loads, reps, and feedback shape future workouts.

The app

Made for the five minutes before training.

umber readiness preview showing an 84 readiness score and ranked exercise fits
01Readiness before trainingA realistic score and report.
umber generated workout showing an exercise alternatives dialog
02Next-best exercise swapsChange movements on the fly.
umber active session screen for logging reps and load
03Easy, precise loggingReps, load, intensity, and feedback.
umber progression insights with training calendar and muscle exposure
04Your progress, visualisedVolume, history, and trends easily viewable.

Gets better the more you train

Personalisation with real benefits.

01 / Constraints

Readiness changes the plan.

Fatigue, soreness, discomfort, and joint pain narrow the exercise pool before umber optimises within it.

02 / Rankings

Your best exercises.

Feedback, progression, goals, and history contribute to personal exercise rankings.

03 / Progression

Targets that adapt.

umber tells you what to aim for so you're not going in blind.

04 / Alternatives

Swap on the fly.

Equipment taken? Swap an exercise for the next best option.

05 / Units

Units you know.

Weights and measurements use the system you're used to.

06 / Mobile

Built for the gym floor.

Large, thumb-friendly actions keeps logging practical on a phone.

umber's AI-free tailoring

Optimised for you.

umber preserves and accumulates the knowledge that shaped each decision. Future recommendations are derived from those facts.

Current fatigue Local soreness Joint pain Body goals Set budget Training history Exercise ratings Logged feedback
Today’s
workout

Open Beta

Train free while umber is in beta.

Use the full training flow, share what works and what needs polish, and help shape umber before general release.

JOIN OPEN BETA
Open Public beta
Free during beta

FAQs

Your questions, answered.

Fixed training splits programme volume and exercises based on the split-maker's experience and body. umber instead generates the right workout for your body on demand - factoring in your personal constraints, goals, history, and preferences. So, if you miss a day, umber will put you right back on track.

As long as you're honestly filling in the check-in, umber will know when it's better for you to rest. If your check-in leaves too little worthwhile training, umber will recommend a rest day. You can still override that recommendation and request the most sympathetic viable session if you're desperate to get a session in.

Each workout, you'll log completed sets, reps, load, and intensity, plus optional feedback for each exercise which really helps umber adapt to your biomechanics and physiology.

No. We wanted umber to give you the best output every time, and AI models can't guarantee that. umber is instead making decisions based on thousands of calculations based on real biomechanics and hypertrophy research data.

No. umber records your training-relevant readiness and provides exercise-planning guidance. It won't diagnose injuries or replace qualified medical advice.

Open Beta is free while umber is being tested and improved with real users. You can use the full training flow and share feedback on what works and what needs polish.