Fitbod is the AI-workout app most lifters on Reddit end up recommending when someone asks about muscle recovery tracking. It's genuinely good at what it does. It's also asking a coarser question than a lot of people realize.
Both apps show you a muscle recovery percentage. The difference is the resolution: Fitbod tells you your chest is at 60% recovered. Valen tells you your upper chest is at 32% and your lower chest is at 68%, and those two numbers can be that far apart on the same day.
| Category | Fitbod | Valen |
|---|---|---|
| Recovery granularity | Per whole muscle group (chest, back, quads) | Per muscle subzone (upper/mid/lower chest, anterior/posterior delts) |
| Workout planning | AI-generated workouts each session, based on equipment and fatigue | Adaptive weekly planner around your own split and real-time subzone fatigue (Pro) |
| Push/pull volume balance | Weekly working-set targets shown as Push/Pull/Legs progress bars | Push/pull and anterior/posterior ratio with specialization-imbalance flags |
| Free tier | 7-day trial only, no permanent free tier | Permanent, heatmap, logging, and exercise library included free |
| Price | $15.99/month or $95.99/year | Free, or $24.99/year or $49.99 lifetime for Pro |
| Offline / no account | Requires account and active subscription | Offline-first, no account required for the free tier |
| Platform | iOS and Android | Android only, iOS planned |
What Fitbod Actually Does
Fitbod generates a workout for you every session, built from your logged history, available equipment, and its read on how recovered each muscle group is. It sets weekly working-set targets and shows your progress toward them as bars you can view at the Push/Pull/Legs level or drilled down to individual muscles like chest, back, or quads.
The muscle heat map after each workout gives every trained muscle a recovery score from 0-100%. That's a genuinely useful, well-built system, and it's a big part of why Fitbod comes up constantly in Reddit threads about recovery-aware training. But the score is calculated at the muscle-group level. Chest is one number. It doesn't distinguish whether that number is being pulled down by an undertrained upper chest while your mid chest is fully recovered.
What Valen Actually Does
Valen splits every major muscle into its functional subzones and tracks fatigue separately for each one through a Stimulus-Recovery-Adaptation model: upper, mid, and lower chest; anterior and posterior delts; long and short head of the biceps and triceps; and similar splits across the rest of the body.
That resolution matters because most lifters' imbalances live inside a muscle group, not just between them. Someone who benches heavy but skips incline work isn't "under-recovered on chest" in any way a whole-muscle score would flag, their mid and lower chest are fine, their upper chest is the one still cooked. Valen's heatmap shows that split directly instead of averaging it away.
Workout Planning: Generated vs Adaptive
Fitbod's model is generative: it builds you a new session, choosing exercises and volume based on what it thinks you should do right now. If you want an app to decide your workout for you, that's exactly the job it's built for.
Valen's model is adaptive, not generative. You bring your own split and training frequency, and Valen's planner reschedules around your real-time subzone fatigue, flagging your peak-readiness day per muscle group and telling you when systemic fatigue is high enough that you should just rest regardless of the plan. It's built for lifters who already know how they want to train and want the schedule to bend around their actual recovery, not be replaced by an algorithm's.
Cost and Access
Fitbod has no permanent free tier. After the 7-day trial, it's $15.99 a month or $95.99 a year to keep using the app at all, and it requires an account.
Valen's core experience, the recovery heatmap, unlimited logging, and the subzone-mapped exercise library, is free permanently, with no account required. Pro, which adds unlimited history, the adaptive planner, and deeper insights, is $24.99 a year or a one-time $49.99 lifetime purchase.
Who Should Use What
You want an app to build your workout for you each session, and you're fine paying a monthly subscription for it: Fitbod.
You already know how you want to train, want to see exactly which part of a muscle is holding you back, and don't want to pay for it: Valen.
You're on iOS: Fitbod is available today, Valen isn't yet. On Android, you can try both, Fitbod's free trial costs nothing to test against Valen's permanently free tier.
Frequently Asked Questions
Does Fitbod track recovery by muscle subzone, like upper vs lower chest?
No. Fitbod's muscle heat map and recovery percentages are calculated per whole muscle group, chest, back, quads, not per subzone. Valen breaks each muscle into subzones and tracks fatigue separately for each one.
Is Fitbod or Valen free?
Fitbod has no permanent free tier, it offers a 7-day free trial, then requires a subscription ($15.99/month or $95.99/year) to keep working. Valen's recovery heatmap, workout logging, and exercise library are free permanently, with Pro ($24.99/year or $49.99 lifetime) unlocking history, planning, and deeper insights.
Which platforms do Fitbod and Valen support?
Fitbod is available on both iOS and Android. Valen is Android only today, with iOS planned.
Does Fitbod or Valen require an account?
Fitbod requires an account and an active subscription after the trial period. Valen works with local storage and no account required; an account is only needed if you opt into Pro's encrypted cloud backup.
Valen is free on Android. Subzone-level recovery tracking works entirely from your training log, no wearable or subscription required to start.