# Flutter vs ScaleTrack

The clearest difference is in-app purchases: ScaleTrack at none against Flutter's 3. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Flutter sells 3 in-app purchases, starting at $14.99 per month. ScaleTrack asks for nothing beyond the download.

Flutter ships an update every 3 weeks, ScaleTrack fortnightly. Both last shipped on October 9, 2026.

## The numbers

| Metric | Flutter | ScaleTrack |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/flutter-heartbeat-sync-app/id6758436973/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Fortnightly** |
| Monetization | Subscription | — |
| Size | 21 MB | 14 MB |
| Requires iOS | 17.6 | **17.0** |
| Devices | **iPhone, Apple Watch** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [CYBERIAN TECHNOLOGIES LLC](https://appshunter.io/developer/1872937842) | [GAGAN BHATTARAI](https://appshunter.io/developer/6782255263) |

## What reviewers say

### Flutter

[App page](https://appshunter.io/ios/app/flutter-heartbeat-sync-app/id6758436973)

Experience your heartbeat as a live haptic sensation on your wrist. Connect with loved ones by sharing real-time heartbeats, fostering a sense of presence and intimacy across any distance. Choose from various haptic styles for a personalized and calming experience.

**Highlights:** Live haptic heartbeat feedback on Apple Watch, Solo Sync for personal awareness, Partner Sync for sharing with others, Real-time BPM display, Multiple haptic pulse styles, Invite-based partner pairing

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Partner Sync (Monthly) | $14.99 | per month |
| Partner Sync Quarterly | $39.99 | per 3 months |
| Partner Sync Annual | $119.99 | per year |


### ScaleTrack

[App page](https://appshunter.io/ios/app/scaletrack-weight-tracker/id6782255261)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Flutter free?

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

### Is ScaleTrack free?

ScaleTrack is free to download, with no in-app purchases.

### Do Flutter or ScaleTrack have ads?

Neither Flutter nor ScaleTrack shows ads.

### Which is updated more often, Flutter or ScaleTrack?

Flutter ships an update every 3 weeks, and ScaleTrack fortnightly. Most recently, Flutter was updated on October 9, 2026 and ScaleTrack on October 9, 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.*