# Holyiot vs Synopsis Track

The clearest difference is update cadence: Holyiot at every 3 months against Synopsis Track's every 10 months. Holyiot also leads on device support and iOS requirement (10.0 vs 13.0). On price and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Holyiot ships an update every 3 months, Synopsis Track every 10 months. The most recent releases landed on May 16, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | Holyiot | Synopsis Track |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | — |
| Update frequency | **Every 3 months** | Every 10 months |
| Size | 28 MB | 58 MB |
| Requires iOS | **10.0** | 13.0 |
| Devices | **iPhone, iPod** | — |
| Age rating | 4+ | 4+ |
| Developer | [Shenzhen Hong yi yun jia technology Co.,LTD](https://appshunter.io/developer/1188616341) | [Digital Matter Embedded CC](https://appshunter.io/developer/1132506291) |

## What reviewers say

### Holyiot

[App page](https://appshunter.io/ios/app/holyiot-sensor/id6449424647)

**Features:** macOS Compatibility

**In-app purchases:** none


### Synopsis Track

[App page](https://appshunter.io/ios/app/synopsis-track/id6467191493)

**In-app purchases:** none


## Frequently asked questions

### Is Holyiot free?

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

### Is Synopsis Track free?

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

### Which is updated more often, Holyiot or Synopsis Track?

Holyiot ships an update every 3 months, and Synopsis Track every 10 months. Most recently, Holyiot was updated on May 16, 2026 and Synopsis Track on September 8, 2026.

---

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