# Motionline — Form Analysis Tool

> Form Analysis Tool (iPhone/iPad app by Takayuki Hamuro.)

- Source: https://appshunter.io/ios/app/motionline/id6759052131 (this page in markdown: same URL + `.md`)
- Developer: [Takayuki Hamuro](https://appshunter.io/developer/1875707249)
- Category: Sports, Lifestyle
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 16.0 · 2 MB
- Languages: American English, Japanese
- Released: 2026-02-14
- Data updated: 2026-08-26
- User reviews in markdown: https://appshunter.io/ios/app/motionline/id6759052131/reviews.md

## What is Motionline?

Motionline breaks down your movement into individual frames so you can analyze and improve your form.

HOW IT WORKS
1. Select a video from your library or record a new one
2. AI automatically extracts frames at your chosen interval
3. Browse, compare, and check key frames
4. Export as strobe photos or MP4 videos

KEY FEATURES
• Frame-by-frame analysis of any video
• Person segmentation — isolate the subject from the background
• Strobe photo layouts — combine multiple frames into one image
• MP4 export from selected frames
• Adjustable frame interval, quality, and background color
• Mirror mode for easy self-review
• Auto-skip similar frames

PERFECT FOR
• Golf, baseball, tennis, and other sports
• Dance and martial arts
• Running and swimming form analysis
• Coaching and self-improvement

SUBSCRIPTION
Motionline Premium unlocks all features with a 7-day free trial. Choose Monthly or Yearly (save 50%+). Payment is charged to your Apple ID account at confirmation. Subscription auto-renews unless canceled at least 24 hours before the end of the current period.

Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://t-aka-h.github.io/motionline/privacy.html

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Monthly | $0.99 | per month |
| Yearly | $3.99 | per year |



## Version history (last 5 releases)

### 1.2.1 — 2026-08-09

• Added anonymous usage statistics — aggregate counts only, with nothing that identifies you — to help improve the app

### 1.2.0 — 2026-03-02

Added guide line drawing tools.

- Draw lines, rectangles, triangles, and freehand guides on frames
- Freely adjust color and thickness
- Guide lines are reflected in composite photos
- Added rule-of-thirds grid overlay
- Added pinch-to-zoom on preview
- Added first-time user guide

### 1.1.2 — 2026-02-24

Fixed person detection cropping — all frames are now cropped to a unified bounding box, ensuring consistent frame sizes across the entire video.

### 1.1.1 — 2026-02-23

Introducing Motionline Premium!
• 7-day free trial — enjoy full access to all features
• Monthly and Yearly subscription plans

### 1.1.0 — 2026-02-16

Added onboarding guide, added offer code redemption

## Apps similar to Motionline

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Jointometer - Analyze Motion](https://appshunter.io/ios/app/jointometer-analyze-motion/id6755709282) | — | Free | Sports |
| [Motion Snapshot](https://appshunter.io/ios/app/motion-snapshot/id6738301692) | 5.0 (2) | Free | Sports |
| [Draw On Sports Video](https://appshunter.io/ios/app/draw-on-sports-video/id6755928363) | 4.8 (6) | Free | Sports |
| [Swing Speed Radar](https://appshunter.io/ios/app/swing-speed-radar/id6739264619) | — | Free | Sports |
| [AXIFY: Sports Video Coaching](https://appshunter.io/ios/app/axify-sports-video-coaching/id6760361606) | — | Free | Sports |
| [FreezeCoach- Sports Video Edit](https://appshunter.io/ios/app/freezecoach-sports-video-edit/id6755420295) | 5.0 (1) | Free | Sports |

## More apps by Takayuki Hamuro

- [Wordsline](https://appshunter.io/ios/app/wordsline/id6759517801)
- [TracelinePhone](https://appshunter.io/ios/app/tracelinephone/id6760141686)
- [PrimeTimeline](https://appshunter.io/ios/app/primetimeline/id6760607676)
- [Double Tap 10](https://appshunter.io/ios/app/double-tap-10/id6760717214)
- [Double Tap 10+](https://appshunter.io/ios/app/double-tap-10-plus/id6761082183)

All apps by Takayuki Hamuro: https://appshunter.io/developer/1875707249

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-26.*