# Health Data Server vs EatSync

The clearest difference is price: EatSync at Free against Health Data Server's $4.99. Health Data Server's advantage is device support (4 vs 1) and iOS requirement (14.0 vs 17.6). On update cadence, ads and in-app purchases there is nothing between them.

EatSync is free to download; Health Data Server costs $4.99 up front. Health Data Server sells 6 in-app purchases, starting at $2.99 per month and EatSync sells 3 in-app purchases, starting at $1.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Health Data Server ships an update weekly, EatSync every 5 days. The most recent releases landed on October 15, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Health Data Server | EatSync |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | **[3.9 (41 ratings)](https://appshunter.io/ios/app/health-data-server/id1496042074/reviews)** | — |
| Number of ratings | **41** | — |
| Positive reviews | 81.8% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Weekly | **Every 5 days** |
| Monetization | Free with in-app purchases | — |
| Size | 27 MB | 14 MB |
| Requires iOS | **14.0** | 17.6 |
| Devices | **iPhone, iPod, Mac, Apple Watch** | iPhone |
| Age rating | 4+ | 12+ |
| Developer | [Aaron DeLory](https://appshunter.io/developer/1496042073) | [Ishan Ahuja](https://appshunter.io/developer/1862753554) |

## What reviewers say

### Health Data Server

[App page](https://appshunter.io/ios/app/health-data-server/id1496042074)

Stream real-time health data from your Apple Watch to your overlay. Display heart rate, calories, and more with customizable animations and sounds. Save workout data to Apple Health.

**Highlights:** Stream heart rate from Apple Watch, Display calories burned, Customizable overlay appearance, Heartbeat animation and sound, Save workout data to Apple Health, Access extensive HealthKit data

**Features:** Family Sharing, Apple Watch app, Vision Pro support

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| HDS Cloud Monthly | $2.99 | per month |
| HDS Cloud Yearly | $29.99 | per year |
| Small Tip | $0.99 | one-time |
| Medium Tip | $2.99 | one-time |
| Large Tip | $4.99 | one-time |
| Make Up the Difference | $49.99 | one-time |


### EatSync

[App page](https://appshunter.io/ios/app/eatsync-track-in-seconds/id6774485056)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| EatSync Pro | $1.99 | per 7 days |
| EatSync Pro | $4.99 | per month |
| EatSync Pro | $34.99 | per year |


## Frequently asked questions

### Is Health Data Server free?

Health Data Server costs $4.99, and also offers in-app purchases.

### Is EatSync free?

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

### Do Health Data Server or EatSync have ads?

Neither Health Data Server nor EatSync shows ads.

### Which is updated more often, Health Data Server or EatSync?

Health Data Server ships an update weekly, and EatSync every 5 days. Most recently, Health Data Server was updated on October 15, 2026 and EatSync on October 1, 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.*