Push-Up Counter App: Count Push-Ups Automatically With AI
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A push-up counter on your phone should count real reps, not half reps and head bobs. Here is how a camera push-up counter decides what counts, where to put the phone, which faults it calls out and a 6-week plan to raise your max.
How does a push-up counter app work?
A push-up counter app uses your phone camera to follow your shoulders, elbows, hips and ankles. Each time your elbows bend through the bottom and straighten at the top, it counts a rep out loud. A good counter also watches your body line, so sagging hips and short reps get called out instead of quietly counted.
Updated 6 November 2026. TRAI Vision is the free camera coach in our Trainera app; the behaviour described is how it currently works.
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Why push-ups are worth counting properly
Push-ups are a real strength exercise, not just a warm-up. In a study by Calatayud and colleagues, elastic-band push-ups and the bench press produced similar strength gains over five weeks when muscle activity was matched. They are also a useful health marker: a 2019 study in JAMA Network Open followed 1,104 active male firefighters for about ten years and found that men who could complete more than 40 push-ups had a 96% lower rate of cardiovascular events than men who completed fewer than 10. The authors note it was an observational study of middle-aged active men, so it does not prove cause or apply to everyone, but it shows why a reliable count is worth having.
Counting by hand fails exactly when it matters: near your limit, when breathing is hard and reps get shorter. That is also when form breaks down.
What counts as one push-up
| Phase | What the camera checks | Cue you may hear |
|---|---|---|
| Top | Arms fully straight | "Straighten your arms at the top" |
| Body line | Shoulders, hips and ankles in one line | "Hips up" or "Hips down" |
| Elbows | Elbows not flaring far away from the body | "Keep your elbows closer to your body" |
| Bottom | Elbows bend through the full range before you push back up | Counted when the cycle completes |
TRAI gives one correction per rep, picking by priority: safety first, then the movement, then detail. Each rep gets a green dot when clean or an amber dot when it had a fault, and the set ends with a line such as "14/18 good reps, most common: Hips up".
Set up the camera for push-ups
- Phone on the floor, to your side. Follow the placement the app shows before the set; for push-ups the camera sits low and sees you side-on, about 2 to 3 metres away, so your head, hands and feet stay in frame at the bottom of the rep.
- Side view. From the side the camera sees the elbow angle and the hip line, the two things that matter most in a push-up. TRAI only judges what it can see from the angle it detects.
- Light in front of you. Avoid a bright window behind you.
- Hold the start position for 2 seconds. TRAI calibrates to your body before the first rep counts.
A 6-week plan to raise your push-up max
Test first: one set of as many clean push-ups as you can do with the camera on. Use the number of green reps, not the total, as your max. Then train three days a week with at least one rest day between sessions.
| Week | Sets x reps (percent of your clean max) | Rest |
|---|---|---|
| 1 | 4 x 50% | 90 s |
| 2 | 4 x 55% | 90 s |
| 3 | 5 x 55% | 75 s |
| 4 | 5 x 60% | 75 s |
| 5 | 4 x 65%, last set to a clean max | 90 s |
| 6 | Day 1 and 2: 3 x 50%. Day 3: retest | Full rest before the test |
Round to whole reps. If fewer than 6 clean push-ups is your starting point, do the same plan with an easier variation, such as hands on a bench or step, and move to the floor when you can do 12 clean reps.
The rule that makes it work
Only move to the next week when most reps in every set were green. If the summary keeps naming the same fault, for example "Hips down", repeat the week and add a plank day: the plank clock in TRAI Vision only runs while your hips are in position, which trains exactly the line you are losing.
Push-up counters compared: camera vs other methods
| Method | Counts automatically | Checks form | Notes |
|---|---|---|---|
| Counting in your head | No | No | Easy to lose count near failure |
| Tap or touch counters (nose or chest touches the screen) | Yes | Depth only | Phone must sit under your face |
| Camera with pose tracking | Yes | Yes, from the side | Needs space and a visible body |
Privacy
The pose model runs on your phone or in your browser. The video is never uploaded or stored and the microphone is not used. Only the rep count is written into your workout. More in does a rep counter app record video.
Beyond push-ups
The same camera coach follows 902 exercises and gives live form correction on 252, including squats, lunges, rows, presses, dips and planks. See the full list of supported exercises or read the AI rep counter guide. For a full routine around push-ups, the 4-week home workout plan uses the same camera setup.
Find your clean max today. Create a free Trainera account, add push-ups to a workout and start the camera. The count goes straight into your log. More on TRAI Vision.
Frequently Asked Questions
How does an app count push-ups?
Where do I put the phone for push-ups?
Does it count half push-ups?
Is the push-up counter free?
How many push-ups should I be able to do?
Does it save my push-up count?
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