Rapsy is an AI-powered fitness companion that turns your smartphone into a virtual personal trainer for home workouts or gym sessions. The Rapsy app combines on-device pose detection with hands-free voice guidance to count reps automatically, track form and estimate calorie burn without sending video to the cloud, so you can train privately and offline.

Key features

Rapsy supports automatic rep counting for more than 70 distinct exercises, including common compound lifts, bodyweight movements and isometric holds. Real-time voice cues announce rep counts and pacing so you can maintain intensity without watching the screen. The app maps joint angles to analyze range of motion and give form-related feedback, and it provides exercise-specific calorie estimates and session summaries. Built-in timer modes handle planks, wall sits and other timed holds, and clear progress charts record weekly reps, calories and per-session breakdowns.

How it works and controls

Start a session by selecting an exercise or a custom workout, position your phone so the camera has an unobstructed view and tap to begin; once the system is calibrated Rapsy counts reps automatically. Controls are intentionally simple: start, pause and stop live sessions from the screen, or use voice prompts for hands-free pacing. The pose detector runs locally on-device, so processing continues without an internet connection. For best results the app recommends a stable mount or tripod, adequate lighting and a clear background to minimize false detections.

Progression and customization

The progression system adapts to your recent activity, letting you set targets for reps, sets and rest intervals and offering gradual increases in volume or intensity as you improve. Create and save custom workouts by combining exercises from the library, assign target reps or durations, and adjust pacing cues to match your preferred tempo. Personal records and per-session history help you identify trends and plateaus, while the app’s adaptive suggestions propose subtle increases in workload when consistency is detected.

Visual style and session structure

The interface focuses on clarity: large, readable timers and simple overlays show rep counts, detected joints and a short text summary of form cues. Each session follows a familiar structure—warm-up, main sets and cooldown—with configurable rest lengths between sets. Exercise pages include short descriptive guidance and common setup tips so users can understand movement intent and purpose. Session summaries present charts and a concise list of completed sets, calories and time under tension so you can review progress quickly.

Replay value and challenge systems

Replay value comes from varied workout templates, progressive goals and a library that grows over time. The app emphasizes personal milestones: streak tracking, best-set highlights and incremental targets that encourage consistency rather than one-off intensity. Because workouts can be mixed—strength, mobility and isometric holds—you can cycle through different modalities to avoid burnout and maintain engagement. Periodic updates expand the exercise catalog and refine detection models to keep sessions fresh.

Accessibility, privacy and offline play

Accessibility features include adjustable voice guidance, clear on-screen text and flexible pacing so users with different fitness levels or impairments can follow along. Rapsy’s on-device processing preserves privacy and lets you train without Wi‑Fi or mobile data; only metadata and local analytics are stored on the device. Timer-only modes are available for exercises where real-time video analysis is not required, reducing battery use and simplifying sessions when you just need a structured hold or interval timer.

Limitations and setup tips

For reliable tracking the app requires camera access and a reasonably unobstructed view with good lighting; unusual gym setups, highly specialized movements or extreme occlusions may not be recognized consistently. To improve detection clear the surrounding area, wear contrasting clothing and keep the camera angle stable. While Rapsy covers a wide range of common exercises, users should allow a short adaptation period as the app learns their movement patterns and should consult a professional for medical or rehabilitation guidance.

If you want a private, easy-to-use rep counter and form tracker that works offline, Rapsy offers a balanced mix of automation, customization and straightforward analytics to help you stay consistent and progress safely.