# Parallely vs FormSync

The clearest difference is price: FormSync at Free against Parallely's $2.99. FormSync also leads on update cadence (weekly vs every 2 months) and iOS requirement (15.1 vs 17.0). Parallely's advantage is in-app purchases (none vs 1) and chart position (#193 vs unranked). On review sentiment, ads and device support there is nothing between them.

FormSync is free to download; Parallely costs $2.99 up front. FormSync sells 1 one-off in-app purchase. Parallely asks for nothing beyond the download.

Parallely ships an update every 2 months, FormSync weekly. The most recent releases landed on October 19, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Parallely | FormSync |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | — | **[3.0 (2 ratings)](https://appshunter.io/ios/app/formsync-swing-and-form-compare/id6779924474/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | 0.0% of reviews | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Weekly** |
| Monetization | Paid | — |
| Best chart rank | **#193** | — |
| Size | 6 MB | 36 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [GINtech Systems LLC](https://appshunter.io/developer/921899404) | [Hiroki Sugiyama](https://appshunter.io/developer/6778858327) |

## What reviewers say

### Parallely

[App page](https://appshunter.io/ios/app/parallely-side-by-side/id1576439630)

**Currently charting:** #193 Top Paid · Photo & Video (US App Store)

Easily compare two photos or videos side-by-side with synchronized playback and frame-by-frame review. Perfect for analyzing progress, creating reaction content, or showcasing before-and-after transformations.

**Highlights:** Synchronized video playback, Frame-by-frame review, Combine photos and videos, Customizable zoom and pan, Adjustable borders and playback order, Export in multiple aspect ratios

**In-app purchases:** none


### FormSync

[App page](https://appshunter.io/ios/app/formsync-swing-and-form-compare/id6779924474)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

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


## Frequently asked questions

### Is Parallely free?

Parallely costs $2.99, with no in-app purchases.

### Is FormSync free?

FormSync is free to download, with in-app purchases available.

### Do Parallely or FormSync have ads?

Neither Parallely nor FormSync shows ads.

### Which is updated more often, Parallely or FormSync?

Parallely ships an update every 2 months, and FormSync weekly. Most recently, Parallely was updated on October 19, 2026 and FormSync on October 24, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*