# Open Horizon Aviation vs Synops

The clearest difference is update cadence: Synops at every 14 months against Open Horizon Aviation's every 42 months. Open Horizon Aviation's advantage is iOS requirement (16.4 vs 26.0). On price, ads, in-app purchases and device support there is nothing between them.

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

Open Horizon Aviation ships an update every 42 months, Synops every 14 months. The most recent releases landed on October 5, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Open Horizon Aviation | Synops |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 42 months | **Every 14 months** |
| Size | 38 MB | 2 MB |
| Requires iOS | **16.4** | 26.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Petadev Solutions Korlatolt Felelossegu Tarsasag](https://appshunter.io/developer/1660737022) | [Foxtrot LLC](https://appshunter.io/developer/1700319524) |

## What reviewers say

### Open Horizon Aviation

[App page](https://appshunter.io/ios/app/open-horizon-aviation/id1670110469)

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

**In-app purchases:** none


### Synops

[App page](https://appshunter.io/ios/app/synops/id6456177464)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Open Horizon Aviation free?

Open Horizon Aviation is free to download, with no in-app purchases.

### Is Synops free?

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

### Do Open Horizon Aviation or Synops have ads?

Neither Open Horizon Aviation nor Synops shows ads.

### Which is updated more often, Open Horizon Aviation or Synops?

Open Horizon Aviation ships an update every 42 months, and Synops every 14 months. Most recently, Open Horizon Aviation was updated on October 5, 2026 and Synops on October 8, 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.*