# Signal vs Vitals Sync

The clearest difference is in-app purchases: Vitals Sync at none against Signal's 3. Signal's advantage is update cadence (every 3 days vs fortnightly) and iOS requirement (15.1 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. Signal sells 3 in-app purchases, starting at $5.99 per month. Vitals Sync asks for nothing beyond the download.

Signal ships an update every 3 days, Vitals Sync fortnightly. The most recent releases landed on October 28, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Signal | Vitals Sync |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.3 (6 ratings)](https://appshunter.io/ios/app/vitals-sync/id6780623839/reviews)** |
| Number of ratings | — | **6** |
| Positive reviews | — | 50.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 days** | Fortnightly |
| Monetization | — | Free |
| Size | 61 MB | 4 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Nkemka Akah](https://appshunter.io/developer/1876666649) | [UMUR GOKALP](https://appshunter.io/developer/1755886704) |

## What reviewers say

### Signal

[App page](https://appshunter.io/ios/app/signal-burnout-tracker/id6759071160)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Signal Premium | $5.99 | per month |
| Signal Premium | $24.99 | per year |
| Signal Lifetime | $34.99 | one-time |


### Vitals Sync

[App page](https://appshunter.io/ios/app/vitals-sync/id6780623839)

This app imports key health metrics from your Garmin device that are not automatically synced to your phone's health app. It securely transfers HRV, Respiration, SpO₂, and VO₂ Max data directly from your device.

**Highlights:** Syncs HRV, Respiration, SpO₂, and VO₂ Max, Automatic background sync, No duplicate entries, Secure token-based authentication, On-device processing, No app account or tracking

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

**In-app purchases:** none


## Frequently asked questions

### Is Signal free?

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

### Is Vitals Sync free?

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

### Do Signal or Vitals Sync have ads?

Neither Signal nor Vitals Sync shows ads.

### Which is updated more often, Signal or Vitals Sync?

Signal ships an update every 3 days, and Vitals Sync fortnightly. Most recently, Signal was updated on October 28, 2026 and Vitals Sync on October 31, 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.*