# FormSync — Compare videos side by side

> Compare videos side by side (iPhone/iPad app by Hiroki Sugiyama.)

- Source: https://appshunter.io/ios/app/formsync/id6779924474 (this page in markdown: same URL + `.md`)
- Developer: [Hiroki Sugiyama](https://appshunter.io/developer/6778858327)
- Category: Photo & Video, Sports
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 15.1 · 36 MB
- Languages: American English, Japanese
- Released: 2026-06-18
- Data updated: 2026-08-30
- User reviews in markdown: https://appshunter.io/ios/app/formsync/id6779924474/reviews.md

## What is FormSync?

FormSync lets you place two videos side by side and play them together — a simple app for checking form.

Compare any kind of movement: dance, golf, tennis, baseball, training, and more. Put a reference next to yourself, or your past form next to today's, and spot the differences at a glance.

Features
- Pick two videos from your camera roll and view them side by side
- Play and pause both videos at the same time
- A shared seek bar to move both to the same position
- Slow-motion playback (0.25x / 0.5x / 0.75x / 1x)
- Set a start point for each video and fine-tune it in 0.05s steps
- Jump to start / skip forward 10s / back 10s
- Pinch to zoom in and check the fine details up close (zoom is kept in your exports too)
- Landscape mode on the compare screen
- Swap one video and keep the other — compare new takes against your reference, one after another
- Mirror view — flip either video horizontally to match your reference's direction
- Draw straight lines to compare form — angle and alignment (PRO)
- Auto-detect pose — full-body skeleton and spine angle drawn in one tap (PRO)
- Export your comparison as a single video, landscape or vertical 9:16 (saved to your camera roll, ready to share)
- Set an end point and export just the range you want to show
- Save your comparisons to history, name them, and revisit them

Free
- Compare any videos — preview plays 10 seconds from your chosen start points
- Export comparisons up to 10 seconds (with a small watermark)
- Keep your 5 most recent comparisons in history

PRO (one-time purchase)
- Play and compare videos in full length
- Draw straight lines to compare form — angle and alignment, baked into your exports too
- Auto-detect pose — full-body skeleton plus spine angle for your golf swing, in one tap
- Export full-length comparisons (watermark can be turned off)
- Keep unlimited history

All videos are processed on your device and are never uploaded to a server.

For iPhone.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| PRO Upgrade | $4.99 | one-time |



## Version history (last 5 releases)

### 1.10.0 — 2026-08-22

- New "Compare with this" in History: keep a past video and pick a new one to compare against it
- Refreshed app icon
- Minor text improvements

### 1.9.0 — 2026-08-08

- You can now play sound from either video, or both at once — hear your reference and your own take together
- Exported videos now include sound
- Minor improvements

### 1.8.0 — 2026-08-06

- Added a short guide to help you get started
- Improved the PRO purchase screen design
- Fixed a bug where the purchase prompt could be hidden behind the toolbar in landscape mode
- Minor improvements

### 1.7.0 — 2026-08-04

- New vertical (9:16) export for TikTok and Reels — choose landscape or vertical when you export
- New mirror view — flip either video horizontally, so you and your reference face the same way
- Set an end point and export just the part you want to show
- Minor improvements

### 1.5.0 — 2026-07-23

- Pinch to zoom in on your videos — check the fine details up close, and your zoom is kept in exported videos too
- The compare screen now supports landscape — view side-by-side videos larger
- Draw straight lines to compare form (PRO) — spot differences in angle and alignment at a glance, baked into your exports too
- Auto-detect pose (PRO) — one tap draws a full-body skeleton with spine, shoulder and hip lines, and shows the spine angle for your golf swing

## Apps similar to FormSync

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Move Mirror AI: Dance Coach](https://appshunter.io/ios/app/move-mirror-ai-dance-coach/id6763208339) | — | Free | Photo & Video |
| [HushCut](https://appshunter.io/ios/app/hushcut/id6764350337) | — | Free | Photo & Video |
| [Simple Video Reverser](https://appshunter.io/ios/app/simple-video-reverser/id6772986115) | — | Free | Photo & Video |
| [Form Camera: Ski / Snowboard](https://appshunter.io/ios/app/form-camera-ski-snowboard/id6778477789) | — | Free | Photo & Video |
| [DrawMovie - 動画にリアルタイム描画](https://appshunter.io/ios/app/drawmovie/id6673889470) | — | Free | Photo & Video |
| [KeepOne: Photo Cleaner](https://appshunter.io/ios/app/keepone-photo-cleaner/id6777339663) | — | Free | Photo & Video |

## More apps by Hiroki Sugiyama

- [Privexa: EXIF & GPS Remover](https://appshunter.io/ios/app/privexa-exif-and-gps-remover/id6782251439)

All apps by Hiroki Sugiyama: https://appshunter.io/developer/6778858327

## Related topics

[video comparison](https://appshunter.io/ios/topics/video-comparison) · [syncmovie \| compare two videos](https://appshunter.io/ios/topics/syncmovie-compare-two-videos)

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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 2026-08-30.*