Gravity vs Skip Lab
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Gravity
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GRAVITY — TRAIN THE NEXT STEP Gravity turns Streetlifting, Hand Balancing, and Flexibility into clear progression paths. Pick a practice, see the next useful milestone, and open one focused session instead of searching through workout lists. STREETLIFTING THAT MEETS YOU WHERE YOU ARE Gravity’s current Streetlifting plan starts at five clean pull-ups. Assess your max, set training days, and follow bodyweight or weighted pull-up and dip programming that matches your starting point. Once earned, the 20-, 25-, and 30-rep milestones can be selected again, and today’s per-set target can be adjusted before you train. CLEAR, HONEST PROGRESSION Log the reps, added load, and effort you actually complete. Controlled completion moves the prescription forward; incomplete or harder-than-planned work holds the target. Progress on the path reflects recorded work—technique practice never invents reps or awards a skill automatically. BUILT FOR THE SESSION See exercises, sets, reps, loads, holds, rest ranges, and safety notes. Full-screen rest, hold, and EMOM timers stay on schedule when Gravity is backgrounded. Active workouts can recover after an interrupted session. THREE TRAINABLE PRACTICES • Streetlifting: bodyweight foundations through weighted pull-ups and dips • Hand Balancing: wall foundations, freestanding balance, and advanced preparation • Flexibility: structured hamstring, compression, and split preparation Calisthenics and Powerlifting appear as clearly marked previews while their complete training paths are still in development. LEARN AND REVIEW Use short guides for active recovery, sleep, fueling, body composition, hand care, technique, deloading, and competition preparation. Review your training history, best set, streak, weekly plan, and path progress. YOUR TRAINING, ACROSS DEVICES A Gravity account keeps completed workouts, programs, and progress synced. Local-first storage keeps the app useful through connection changes and syncs again when a connection returns. Optional local reminders follow your weekly plan. FIND A PLACE TO TRAIN Open the Parks map, search a city, or choose Find My Location to see nearby calisthenics parks. Location access is optional. FREE, NO ADS Gravity is free, with no ads, subscriptions, or in-app purchases. PRIVACY BY DESIGN No advertising tracking or data brokers. Technical diagnostics are limited and do not include session replay, screenshots, or tap capture. Set videos and profile photos stay on your device. Delete your Gravity account and associated cloud training data at any time in Settings. Strength training carries a risk of injury. Gravity provides general training information, not medical advice. Use appropriate equipment and technique, stop for pain, and seek qualified guidance when needed.
Skip Lab
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Prop your phone against a wall, start a session, and skip. Skip Lab watches through the camera and counts every skip — set by set, on its own. Nothing to wear, nothing to tap, nothing to count in your head. WHAT IT DOES • Counts from the camera. No wearable, no rope sensor, no beaded handle. Put the phone across the room and jump. Every skip is counted on the phone itself, as you do it. • Finds your sets for you. Stop to catch your breath and the set closes on its own; start again and the next one opens. You never tell the app you are starting or stopping — you just skip. • Measures the set, not just the count. Every set carries its duration, pace in skips per minute, how even your rhythm was, how high you bounced, and how it ended — including when the rope caught you. • Films every set. Each set is saved as its own trimmed clip, so a forty-minute session becomes the eleven pieces you actually did instead of forty minutes of footage. Save them to Photos or share them. • Intervals. Work, rest and rounds on one screen. Spoken and audible cues at every change, plus a flashlight pulse for the last three seconds, so you can run the whole thing from across the room without looking at the phone. • Battle. Two people, one phone, one target. Both are counted live, side by side, and the first to the number wins — then the race becomes a shareable highlight reel. • Apple Watch. The count, your pace and your heart rate on your wrist while the phone films from across the room — which is the one screen you can actually read mid-set. End the session from the watch. The workout is saved to Apple Health, so your rings close. • Records that ratchet. Most consecutive skips, longest unbroken run, best session, lifetime total — plus a trend line for every session you have done. ON YOUR PHONE, NOT IN THE CLOUD Every frame is analysed on your iPhone. Your footage and your counts never leave the device. There is no account, no sign-up, and no internet connection required to use any part of the app. Skip Lab sends a small number of anonymous product events so we can see which parts get used — counts and durations only, never your footage and never anything you typed. WHO IT IS FOR Anyone who skips and wants to know the number: boxers and martial artists, CrossFit and HIIT athletes, runners warming up, and anyone using a rope as their conditioning. If you have ever lost count at ninety and started again, this is the app. WHAT YOU NEED An iPhone you can prop up, a rope, and about two metres of room. Portrait, front or back camera, indoors or out. Good light helps; a plain wall behind you helps more.
Screenshots
Verdict
The clearest difference is iOS requirement: Gravity at 15.1 against Skip Lab's 17.0. On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | Gravity | Skip Lab |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 weeks | — |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPod | iPhone, Apple Watch |
| Requires iOS | 15.1 — better | 17.0 |
| Further details — not scored | ||
| Size | 37 MB | 39 MB |
| Age rating | 17+ | 4+ |
| Developer | Vincent Van der Struis | Michael Mac Donald |
In-app purchases
Gravity
No in-app purchases
Skip Lab
No in-app purchases









