Pull up counter app Powered by AI.
Counting pull-ups with AI camera tracking requires more careful setup than floor exercises, but it's the most accurate automated pull-up counting method available. REPS tracks your shoulder and elbow joints through the full range of motion and counts complete pull-up reps.
This page covers how to set up your phone for pull-up counting, the form requirements, troubleshooting tips, and what to expect from AI pull-up tracking accuracy.
Camera-based pull-up tracking — setup and accuracy.
Pull-ups are the hardest bodyweight exercise to track with a camera because of the movement plane and camera positioning challenges. Unlike pushups (horizontal, on the ground near the phone) or squats (vertical, in open space), pull-ups happen on a bar with your body moving through a vertical plane. The phone needs to be positioned to see your full body — from arms fully extended to chin at bar level.
REPS tracks pull-ups by monitoring shoulder and elbow joint angles. At the bottom of the pull-up, your arms are fully extended (large elbow angle). As you pull up, the elbow angle decreases. The AI looks for a complete cycle: full extension → pull up (chin approaching or above bar) → controlled descent → full extension again. One cycle = one rep.
Camera positioning is critical for pull-up counting. The phone should be in front of you, about 6-10 feet away, at roughly chest height. This angle lets the AI see both the bottom (full hang) and top (chin above bar) of each rep. Side angles can work but front-facing gives the most reliable joint tracking for pull-ups.
Step by step.
Camera Setup for Pull-Ups
Place phone in front of your pull-up bar, 6-10 feet away, at chest height. The camera needs to see your full body from dead hang to chin-above-bar. A tripod or stable surface helps.
Shoulder and Elbow Tracking
The AI focuses on your shoulder and elbow angles. Full extension at the bottom (arms straight) is the starting reference. As you pull, the elbow angle changes.
Top Position Detection
The AI detects when you've pulled high enough — chin approaching or above bar level. This is the form threshold for counting the pull-up.
Rep Counted on Return
After reaching the top and returning to full extension, one pull-up rep is registered. Each complete up-down cycle counts as one rep.
Get the most out of it.
Optimal Camera Setup
Front-facing, 6-10 feet away, at chest height. The camera needs to see both your dead hang and your chin at bar level. Use a chair or shelf to prop the phone if needed.
Outdoor Pull-Up Bar Tips
Parks with pull-up bars are great for REPS. Position your phone on a bench, rock, or another stable surface facing the bar. Avoid direct backlight (sun behind you).
Strict vs Kipping Pull-Ups
REPS is optimized for strict pull-ups with full range of motion. Kipping pull-ups have a different movement pattern that may affect counting accuracy. For most reliable counts, do strict pull-ups.
Low Light Considerations
Pull-up bars are often in garages or outdoor areas with inconsistent lighting. If the AI is missing reps, lighting is usually the first thing to check.
Questions? Answered.
Can REPS reliably count pull-ups?
Yes, with proper camera setup. Place your phone in front of you at chest height, 6-10 feet away, so the camera can see your full body from dead hang to chin above bar. Under these conditions, pull-up counting is reliable.
Does camera angle matter more for pull-ups?
Yes. Pull-ups require better camera positioning than floor exercises because the movement is vertical and the AI needs to see both full extension and top position. Front-facing angle is best.
What about chin-ups vs pull-ups?
Both involve the same vertical pulling movement. REPS tracks the arm extension and pull movement pattern, which is similar for chin-ups (underhand) and pull-ups (overhand). Both should count reliably.
My pull-ups aren't being counted — what's wrong?
Check: (1) Can the camera see your full body including feet? (2) Is there enough light? (3) Are you reaching full extension at the bottom? (4) Is your chin reaching bar level at the top? Camera position is the #1 issue for pull-up counting.
How does the pull up counter app work?
The pull up counter app REPS uses computer vision AI running on your iPhone to count exercise reps automatically through your phone's camera. During your workout, REPS maps your body's skeleton by tracking key joints and angles as you move. When you complete a full repetition of exercises like pushups or squats, the AI detects the proper movement pattern and range of motion, then logs the rep instantly with no buttons to press. REPS validates that you hit required positions before counting — pushups need chest-to-ground depth and full arm extension, squats require hip crease below knee level. The computer vision technology runs entirely on-device during workout sessions. Supported exercises include pushups, squats, burpees, lunges, jumping jacks, high knees, and mountain climbers. Each counted rep awards 1 XP toward rank progression. The automatic counting removes manual tracking burden, letting you focus on exercise execution and form during training sessions.
Count pull-ups with AI. Camera tracks every rep.
Free on iOS. No equipment needed. AI counts every rep.
