Workout Apps That Check Your Form: Six Compared
Six apps compared on the one thing five of them do not do: verify the rep actually happened.
The Butt Lift teamUpdated 2026-08-13
Short answer
Of the six apps compared here, only Butt Lift checks your form: the iPhone camera counts each rep and scores it live on depth, tempo and control, all on device.
Nike Training Club, Fitbod, Sweat, 30 Day Butt Challenge Pro and Daily Butt Workout are strong in other ways, but each verifies by self-report. You tap, they trust you.
The short version
- Of the six apps compared here, only Butt Lift measures the movement itself: the iPhone camera counts each rep and scores it live on depth, tempo and control.
- Nike Training Club, Fitbod, Sweat, 30 Day Butt Challenge Pro and Daily Butt Workout all verify by self-report, so a set counts as done the moment you tap it.
- Butt Lift's pose detection runs on device and no video is recorded, stored or uploaded.
- Butt Lift is iPhone only and glute focused, so Android users and anyone after full-body gym programming are better served by Fitbod.
- Butt Lift builds a 28 day plan from your onboarding answers and reroutes exercises around flagged knees, hips, lower back or wrists.
| App | Best for | How workouts run | Counts reps / checks form | Personalised plan |
|---|---|---|---|---|
| Butt Lift | Personalised glute training with automatic rep counting and form scoring at home | Live camera session with on-device pose detection and coach voice | Yes. Every rep counted and scored on depth, tempo and control | Yes. Real 28 day plan built from onboarding answers |
| Nike Training Club | A large free library of guided video workouts across many modalities | Pre-recorded trainer-led video classes, plus whiteboard workouts | No. You log completed workouts yourself | Multi-week programs you select, not built from your answers |
| Fitbod | Gym-goers who want strength programming decided for them | Generated session plan with exercise videos and a rest timer | No. You tap to log sets, reps and weight | Yes, algorithmic. Non-linear periodization that adapts to your edits |
| Sweat | Women wanting trainer-authored progressive programmes and a community | Guided workout screen with written descriptions and demo videos | No. Workouts marked complete and weights logged manually | Personalised at selection: level, duration and exercise substitutions |
| 30 Day Butt Challenge Pro | Beginners wanting a ready-made no-equipment glute plan with habit tracking | Pre-recorded video and still-image demos inside a 30 day plan | No. Nothing about the exercise is verified | No. A fixed progressive 30 day challenge |
| Daily Butt Workout | A short offline glute routine with just a demo and a timer | Trainer-demonstrated video clips with an on-screen countdown timer | No. Completion is time elapsed, not performance confirmed | No. A fixed follow-along routine |
Our picks
- Best for form checking and rep counting: Butt Lift the one here where the camera counts each rep and scores it on depth, tempo and control, entirely on device.
- Best for Android: Fitbod Listed on both iPhone and Android, unlike Butt Lift, which is iPhone only.
- Best free video library: Nike Training Club Professionally produced classes across strength, HIIT, yoga, pilates, recovery and mindfulness, free.
- Best for gym strength programming: Fitbod Non-linear periodization picks the weight and reps for you and adapts as you edit.
- Best for community and named coaches: Sweat Trainer-authored programmes plus virtual challenges and an in-app forum.
- Best offline no-fuss routine: Daily Butt Workout Works fully offline with a certified trainer demo and a timer, nothing else to learn.
- Best glute plan built around your body and kit: Butt Lift A 28 day plan from your onboarding answers that adapts to bands or dumbbells and reroutes around flagged joints.
What "checks your form" actually means
Most fitness apps log attendance, not execution. You mark a set done and the app believes you.
That is fine for habit building and useless for technique.
A real form check needs a sensor watching the movement. On a phone that means the camera plus pose detection, scoring the rep against depth, tempo and control.
The test is narrow: does anything in the app measure the movement itself, or does it just record your tap? One of the six passes.
- Camera and pose detection: measures the rep as you do it
- Manual logging: records what you say you did
- Apple Watch or Health data: shows effort and activity, not whether the prescribed movement happened
The six apps, and who each one is genuinely for
Butt Lift is the one app here with live form scoring. It is an iPhone app for glute training, free to download, with Butt Lift Pro unlocking the full plan. No account required.
It builds a real 28 day plan from your onboarding answers: program, strength, weekly frequency, session length and focus areas. Sessions run from about 5 to 25 minutes.
Nike Training Club is a large free video library. Trainer-led classes across strength, HIIT, yoga, pilates, recovery and mindfulness, with an Apple Watch companion for advancing or pausing.
It verifies nothing. You log the workout yourself.
Fitbod wins on programming intelligence. It decides which muscles, what weight and how many reps, using non-linear periodization and an adaptive model that learns from your edits.
You still log every set by hand.
Sweat wins on trainer authorship and community. Progressive programmes from named coaches including Kayla Itsines and Kelsey Wells, home or gym variants, beginner to advanced.
Strength work is self-tracked.
30 Day Butt Challenge Pro is the habit scaffolding option. A no-equipment 30 day glute plan with HealthKit sync, reminders, a water reminder and a transformation tracker. Completion is a tap.
Daily Butt Workout is the simplest thing that works offline. Video and countdown timer routines, every exercise demonstrated by a certified personal trainer.
It pushes duration and estimated calories to Apple Health and checks nothing else.
Why Butt Lift is different
It measures the movement instead of trusting a tap. The iPhone camera counts each rep and scores it live on depth, tempo and control, with a coach voice in three tones: Sweet, Sassy, Savage.
Sloppy reps score lower and get flagged with a cue. A clean rep streak drives the combo, so the reward is technique, not volume.
Pose detection runs on device, and no video is recorded, stored or uploaded.
The training is glute specific: 10 exercises, including glute bridge, hip thrust, squat, sumo squat, lunge, donkey kick, fire hydrant, curtsy lunge, single-leg bridge and step-up.
Three shape programs cover different goals: Lift & Sculpt, V-Shape Builder and Full Curve.
It adapts from bodyweight to bands and dumbbells, and reroutes exercises around flagged knees, hips, lower back or wrists.
Butt Lift trains and measures. It does not promise an outcome.
Where the other apps genuinely beat it
Butt Lift is iPhone only and glute focused, so two big groups are better off elsewhere.
Android users and anyone after full-body strength should look at Fitbod, which lists both iPhone and Android.
If you train in a gym with barbells and plates, Fitbod is the better brain. Butt Lift will not periodise your loading across a block.
If you want variety rather than measurement, Nike Training Club is free and enormous. Yoga, pilates, recovery and mindfulness sit entirely outside Butt Lift's scope.
If you want a named coach and a community, Sweat is the credible pick, with trainer-authored programmes and an in-app forum. Butt Lift has streaks and session ranks, not a community.
If you just want a timer and a demo video with no camera involved, Daily Butt Workout does that offline in the least fussy way here.
How to choose in one minute
Pick on the feedback you need, not the biggest library. If nobody has ever told you whether your squat depth is right, a video library will not fix that.
If your problem is consistency, a challenge app with reminders and a tracker is enough. If your problem is technique, only a camera-based app addresses it.
If your problem is programming, that is Fitbod's job. And nothing here replaces a physiotherapist if something hurts.
Questions people ask
Can you cheat the rep counter?
Not usefully. Reps are scored on depth, tempo and control, so a half rep or a rushed one scores lower and gets flagged with a cue.
You can wave at the camera and get nothing back, which only cheats you.
Does Butt Lift record me while I train?
No. Pose detection runs on device and no video is recorded, stored or uploaded. The camera measures the movement in the moment, nothing more.
Do I need an account or a subscription to try it?
No account is required and the app is free to download. Butt Lift Pro unlocks the full plan.
Is there an Android version?
No. Butt Lift is an iPhone app. On Android, Fitbod is the credible alternative here, though it logs sets manually rather than checking form.
Do any of the other apps count reps?
No. Nike Training Club, Fitbod, Sweat, 30 Day Butt Challenge Pro and Daily Butt Workout all rely on you marking things complete.
Apple Watch and Apple Health data add effort and activity numbers, not proof that the movement happened.
What if my knees or lower back are dodgy?
Butt Lift reroutes exercises around flagged knees, hips, lower back or wrists based on your onboarding answers.
It is training software, not medical advice, so see a clinician if something actually hurts.
Train glutes with a coach that watches
Butt Lift uses your iPhone camera to count every rep and score its depth, tempo and form. Sloppy reps do not count.
Free to download. No account needed. Nothing is recorded or uploaded.
Sources
App features change. Each competitor detail below was checked against a current source on the date shown.
- Butt Lift on the App Store (first-party product facts) checked 2026-08-13
- Nike Training Club: Wellness on the App Store checked 2026-08-13
- Fitbod: Gym & Fitness Planner on the App Store (subtitle: AI Personal Trainer & Workouts) checked 2026-08-13
- Sweat: Fitness App For Women on the App Store checked 2026-08-13
- 30 Day Butt Challenge Pro on the App Store (developer: Rumble) checked 2026-08-13
- Daily Butt Workout - Booty on the App Store (Daily Workout Apps, LLC) checked 2026-08-13