01
Read the evidence
Recent sessions, actual load, reps, RPE, and recovery context enter one decision chain.
LOCAL-FIRST AI FITNESS COACH
Your next session,without the guesswork.
Training history, load, reps, RPE, and recovery signals come together in one decision you can act on today.
REAL TRAINING DATA · IPHONE / APPLE WATCH · LOCAL-FIRST
HOW LENJO COACHES →ADD LOAD
LOAD UP?
HOLD
HOLD?
DELOAD
DELOAD?
00 — THE QUESTION
READ THE SIGNALS
Read the body.Then train.
Lenjo reads your training history, set-by-set RPE, sleep, HRV, and soreness—then turns those signals into one decision for today.
SLEEP
6H 12M
HEART RATE VARIABILITY
−12% BELOW BASELINE
UPPER-BACK SORENESS
3/5
LAST PULL SESSION
45KG × 8 @ RPE 8
APPLE WATCH · LIVE HR 98 · READY
01 — READ THE SIGNALS
THE DECISION
Today’s trainingis a decision.
Not a way around training. A smarter version of today—keep the movement pattern, reduce the recovery cost.
Cap effort at RPE 6–7, leaving 2–3 reps in reserve
Drop one set per exercise and keep every rep clean
Heavy bent-over row → switch to a supported variation
Stop for sharp pain and reassess tomorrow morning
02 — THE DECISION
THE LOOP
Finish the session.Then the decision begins.
Every set—load, reps, and RPE—becomes input for what comes next. Lenjo closes the loop: your training history is the algorithm.
DECIDE
STEP 01
EXECUTE
STEP 02
RECORD
STEP 03
ADAPT
STEP 04
LOOP CLOSED
SESSION
00:00
SETS COMPLETED
00 / 12
03 — THE LOOP
THE ADAPTATION
Next time,automatically different.
Lenjo does not reward grinding through. It uses what you actually completed and how you recovered to decide whether the next step is forward—or intelligently half a step back.
READINESS IS A TRAINING REFERENCE, NOT A MEDICAL METRIC.
ADD LOAD
HOLD
DELOAD
SWAP
45KG × 10 @ RPE 7, recovered well → next: 47.5KG
Completed, but RPE reached 9 → hold the current load
Sleep < 6H and HRV below baseline → drop 1 set, RPE 6–7
Soreness changes the movement path → use a supported variation
LIVE HR
116RECOVERING
Every decision has evidence.
APPLE WATCH · RECOVER → ACTIVE
04 — THE ADAPTATION
BEGIN
Built for self-coached athletes.
01
TRAIN ALONE, NOT BLIND.
PRINCIPLE 01
02
EVERY KILOGRAM, EARNED.
PRINCIPLE 02
03
RECOVERY IS TRAINING.
PRINCIPLE 03
STRENGTH, DECIDED.
Turn every session into evidence for the next.
IPHONE · APPLE WATCH · AVAILABLE NOW ON THE APP STORE
05 — BEGIN
06 · AI FITNESS COACH · TRAINING KNOWLEDGE
An AI fitness coach, specific to your next workout.
Lenjo connects what you actually completed with the next session. Review the plan, train set by set, and let the result shape the next adjustment.
02
Decide the session
Exercises, sets, target reps, and intensity become a plan you can review and edit.
03
Learn from the result
The set values you confirm become evidence for the next training adjustment.
06 · TRAINING GUIDES
Make each training question concrete.
G.01
PLANNING
AI Strength Training Plan
A useful AI strength training plan should learn from your actual load, reps, RPE, recovery, equipment, and completed sets before deciding what comes next.
READ GUIDE
G.02
PROGRESSION
RPE Workout Planner
Learn how RPE and reps in reserve add context to load and reps, when to progress, hold, or reduce, and why one RPE score should not control the whole plan.
READ GUIDE
G.03
RECOVERY
Apple Watch Next-Set Readiness
See how Lenjo Pro combines Apple Watch heart-rate decline, elapsed rest, previous-set performance, and minimum-rest safeguards to guide next-set readiness.
READ GUIDE
G.04
PLANNING
Adaptive Workout Plan
An adaptive workout plan keeps the training structure stable while adjusting load, reps, sets, or exercises from completed performance and recovery context.
READ GUIDE
G.05
PROGRESSION
Workout Log Analysis
Track exercise, set-level load, reps or duration, completion, RPE, and recovery timing so each workout can produce a specific next-session adjustment.
READ GUIDE
G.06
RECOVERY
How Long to Rest Between Sets
Compare rest intervals for heavy compound lifts, hypertrophy work, and isolation exercises, then use reps, RPE, and movement quality to adjust.
READ GUIDE
FAQ · 04
Before your first session.
Product capability, data boundaries, and the decisions that always remain yours.
01How does Lenjo differ from a fixed workout plan?＋
A fixed plan follows a preset template. Lenjo can read your recent sessions, actual load, reps, RPE, completion, and permitted recovery signals before adjusting what comes next and explaining the decision.
02Can I start training from the generated plan?＋
Yes. Review and edit the structured plan on iPhone, then confirm actual load, reps, and RPE set by set. Lenjo Pro can also send the plan to Apple Watch for wrist-based execution and between-set recovery guidance.
03Does Lenjo diagnose pain or injuries?＋
No. Lenjo does not diagnose injuries, provide treatment, or guarantee training outcomes. Stop the relevant movement and seek qualified help for unusual pain or symptoms.
04Does all of my training and health data leave the device?＋
No. Core records are stored mainly on-device. Necessary content is processed by third-party model services only when you choose AI coaching or photo analysis. Local training and logging remain available without AI.
Your next session, decided.
Lenjo is available for iPhone and Apple Watch.
07 — PRIVACY & BOUNDARIES · TRUST
Intensity follows the data. Boundaries stay with you.
Readiness is estimated from heart-rate and training signals to guide training rhythm. It is not a medical metric, and Lenjo does not diagnose injuries or health conditions.
01
Core records stay local-first
Workouts, body metrics, nutrition, chats, and long-term memory are stored mainly on your device. Logging and training never require AI.
02
Permission stays optional
Sign in with Apple and Apple Health access are optional. Decline AI processing and you can still train, backfill sessions, and keep local records.
03
You see what gets sent
Only when you choose AI coaching or photo analysis is the necessary content securely processed by third-party model services.
04
No advertising tracking
Lenjo does not use your data for advertising tracking. You can review, export, or clear your records in the App.