Rep Counter Apps That Use Your Camera: What They Count and What They See

Rep counter app: a log you fill in, or a counter that watches you

"Rep counter app" means two things. When we searched Google on October 20, 2026, the top results were about logs: RepCount's store listings, a Reddit thread on tracking reps and weight, then Hevy and Strong. In a log, you type the reps in; the app keeps them. All three log for free; Strong's free version "is limited to 3 custom routines".

The other meaning is an app that counts for you. Google's "People also ask" box opened with it: "Is there an app that counts your reps?" Yes, in three ways:

• The camera. The phone, propped up in front of you, watches you move.
• A motion sensor. A watch, or the phone on your body, feels the move: Motra says it tracks reps from "the motion of your Apple Watch". Our guides to push-up counter apps and squat counter apps compare them for those two moves.
• Your finger. A tap per rep on an exercise counter app, or a clicker.

On October 24, 2026, Google completed "ai rep counter" with "on device". This guide stays on the camera: what it counts, judges and sends.

What "AI" does in a workout app: count, check or plan

On a listing, "AI" can mean three jobs.

• Count. The camera reads each rep and adds it up. GymCam says it counts reps "for ANY exercise".
• Check. The app compares your move with its model of it. FormLens scores a filmed lift or run out of 100, with one fix to work on first; Form Coach scores every rep, live.
• Plan. The AI writes your sessions from your answers and history. Fitbod builds each one for "your fitness level and equipment"; Planfit shows good form in "1,100+ exercise videos". Neither listing describes camera tracking.

Some do two or three: Zing and Tempo plan your training and watch your form; Form Coach counts, scores and plans. So "AI" alone doesn't tell you a camera is watching: look for "camera", "count" and "form" on the listing.

How a phone camera sees a rep

Camera apps that explain how they work describe the same thing: a live skeleton (Form Coach), "joint positions" (FormLens), "dots" marking your movements (Zing's privacy policy). A pose model finds your body in each frame and puts points on it. Google's MediaPipe pose model, for one, marks 33, and its guide calls it "optimized for on-device, real-time fitness applications".

The app turns those points into its own rule: an elbow angle, how far your shoulders drop, how close your hips come to your knees. So a camera counter needs:

• Your whole body in view, or the joints the move uses: GymCam asks you to "step back until your full body is visible in the frame".
• A phone that stays put, on a stable surface or against a wall.
• The angle the app asks for. The lens can't measure a joint it can't see. Form Coach gives each exercise "a placement guide".

Camera rep counters and AI coaches, compared

Read on October 24 and 25, 2026, with US App Store prices. The camera counters we found on the App Store had few ratings, from none to a few dozen; two apps with many ratings, Zing and Tempo, use the camera inside a coaching plan.

Sources, read October 24 and 25, 2026: each app's US App Store listing and privacy label; Google Play's Data safety labels; Motion Coach's site; the privacy policies of Motion Coach (undated), GymCam (June 2026), FormLens (October 2026), Zing (March 2025) and Tempo (November 2023); Google's MediaPipe guide; Google Suggest. Apple, iPhone, iPad, Apple Watch, App Store, TrueDepth, Google, Google Play, Android, Gemini, MediaPipe, Reddit and the app names in this guide are trademarks of their respective owners. SWADE is independent and is not affiliated with, sponsored or endorsed by any of them.

AI form checkers: what a form score can and can't tell you

An "ai form checker" or a "gym form correction app" helps, if you know what its score measures.

• Points, not feelings. FormLens reports "depth, symmetry and joint angles". No video tells an app whether a move hurts.
• The app's own rule. Each app decides what a good rep looks like; another may score the same rep differently.
• One camera, one side. Set the phone where the app's guide says, or it scores only what it sees.
• Live, or after. Form Coach cues you mid-rep ("elbows tighter"); FormLens reads a set once you've filmed it.

Test a score before you trust it: a few reps you know are clean, a few you know aren't. Does it tell them apart? Our push-up counter guide has a test you can adapt to any move. If a move hurts, stop and see a doctor: a green skeleton isn't a medical check.

Where the video goes: what "on-device" covers

"On-device" can cover four layers, and the apps we read answer differently for each.

An app can keep the video on your phone and still send what it learned from it.

Check a camera app before you film yourself

1. Find the camera's job: counting, checking form, or no job at all?
2. Find where the video is processed: "on-device", "never leaves", "in your browser". Then ask what that covers: the video, the points, or only the count?
3. Read both labels, then the policy. Zing's App Store label doesn't list "Photos or Videos"; its Google Play label lists "Photos and videos". Its policy explains: photos you choose to upload reach its servers; from your workouts, only the dots do. A label is a start, not the answer.
4. Search the policy for "camera", "video" and "image", and note its date: Tempo's is from 2023; Motion Coach's has none.
5. Try airplane mode. If it still counts, the counting runs on the phone. That doesn't prove nothing is sent later.
6. Check what it records: is there a video file, where is it kept, and does it leave only when you share it?

Which one fits you

See what the camera reads in SWADE

SWADE: a camera game, not an all-purpose counter

SWADE is a fitness game app, coming soon to iPhone and Android: prop up your phone, and its camera turns your moves into the controller. It counts, but only inside its two games.

What the camera reads. In the Runner, you jump a low barrier, squat under a high gate and step aside to switch lanes, the phone standing "two meters away, whole body in view", as the app says. In Push Flight, you hold a plank facing the phone, which stands on the floor against a wall, never flat: your head sets how high Sway, SWADE's weasel, flies through the gates, and your shoulders count the push-ups.

What it counts. The Runner adds up your jumps and squats; stepping aside moves the pirate but doesn't count. In Push Flight, a full drop of your shoulders is one push-up and a shallower one part of one; straight arms never count ("Bend your elbows! That doesn't count."), and knee push-ups count the same. The total comes at the end, rounded down. The "This month" card on your Profile adds up the month's jumps, squats and push-ups.

What it says to you. Where to stand and what to do: "Almost! Step back to fit your feet." Lose the camera in the Runner and the game waits; in Push Flight, hands out of the picture means "Push-ups on hold."

What it doesn't do. No form score, no technique correction, no voice coach, no program, no counter for other exercises. One player, one phone, and today it plays on the phone screen. The day's session on the Path, in the Runner, is free; each game in Play, Push Flight included, spends one energy, which refills over time, except Push Flight's guided warm-up.

That's narrower than the apps above: it won't count your curls or check your deadlift. What it gives instead is a reason to do the reps: a barrier to clear, a gate to fly through.

Your camera stays on your phone

In SWADE, the camera, the pose tracking and the counting of your moves run on your phone: no image, no video, not one frame leaves it. What travels is the outcome of a game: a score, your jumps, squats and push-ups. Two exceptions, only while "Help improve SWADE" is on, as it is at first: a few numbers on how the camera followed you in Push Flight, sent with usage stats under a random ID, never your account; and now and then a short sample of your moves drawn as a stick figure of 33 points, never an image, with no account attached, over Wi-Fi only. You can switch it off in Settings. Our servers are in the EU. Details in the privacy policy.

That isn't unique: Form Coach, GymCam and FormLens say your video stays on the phone too, and the policies of Zing and FormLens say the points reach their servers, as SWADE's samples reach ours. What sets SWADE apart isn't privacy. It's that the camera is there for a game.

What this guide doesn't cover

• Body scans. That isn't counting, and we don't cover it.
• Calories and weight. We don't talk about them here.
• Pain, an injury or rehab. A doctor first.
• A whole program. For apps that plan full workouts, see our guide to the best workout apps for beginners.
• Playing on a TV or a computer. Today, SWADE plays on the phone screen.

Frequently asked questions

Related guides