Comparison

Performance Unit vs MuscleLight

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Performance Unit

Features
Read full description

With the Performance Unit App, you can start tracking your nutrition & workouts, measuring results, and achieving your fitness goals, all with the help of your personal trainer. - Set health and fitness goals - Track progress towards your goals - Manage your nutrition intake as prescribed by your coach - Schedule workouts and stay committed by beating your personal bests - Access training plans and track workouts - Message your coach in real-time - Track body measurements and take progress photos - Get push notification reminders for scheduled workouts and activities - Connect to wearable devices like Apple Watch (healthkit), Fitbit and Withings to sync body stats instantly Download the app today!

About

MuscleLight

Features
Read full description

MuscleLight is an app accompanying RedStep device that supports your general wellness and relaxation routines through gentle, light-based sessions. It helps you unwind, stay consistent with healthy habits, and enjoy moments of recovery anytime, anywhere. App features: • Connect and control your external RedStep wellness device • Create customized light sessions for relaxation and daily comfort • Track your usage and set helpful reminders • Explore routines that support balance and wellbeing Important information: • The MuscleLight App requires the external RedStep device to function. • The MuscleLight App and RedStep device are not medical devices. • They do not diagnose, treat, cure, or prevent any disease or medical condition. • All information provided is for general wellness purposes only. • If you have health concerns or persistent discomfort, consult a qualified healthcare professional. Experience calm, comfort, and relaxation with MuscleLight — your personal wellness companion.

Screenshots

Performance Unit4 screens
MuscleLight4 screens

Verdict

The call

The clearest difference is device support: Performance Unit at 4 against MuscleLight's 1. On price, update cadence, ads and in-app purchases there is nothing between them.

Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Performance Unit ships an update every 6 weeks, MuscleLight monthly. The most recent releases landed on May 17, 2026 and September 8, 2026 respectively.

Scorecard1 real difference Ā· 5 level
Performance Unit versus MuscleLight: the parameters behind the verdict, then further details
ParameterPerformance UnitMuscleLight
PriceFreeFree
Update frequencyEvery 6 weeksMonthly — better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone
Requires iOS15.1 — better16.4
Further details — not scored
Size205 MB52 MB
Age rating4+17+
DeveloperSelkrig PerformanceRecolth Oy

In-app purchases

None

Performance Unit

No in-app purchases

None

MuscleLight

No in-app purchases

Questions

Is Performance Unit free?
Performance Unit is free to download, with no in-app purchases.
Is MuscleLight free?
MuscleLight is free to download, with no in-app purchases.
Do Performance Unit or MuscleLight have ads?
Neither Performance Unit nor MuscleLight shows ads.
Which is updated more often, Performance Unit or MuscleLight?
Performance Unit ships an update every 6 weeks, and MuscleLight monthly. Most recently, Performance Unit was updated on May 17, 2026 and MuscleLight on September 8, 2026.

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