# OSSA App vs SOE 2025

The clearest difference is update cadence: SOE 2025 at every 4 days against OSSA App's every 4 months. SOE 2025 also leads on iOS requirement (13.0 vs 15.1). 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.

OSSA App ships an update every 4 months, SOE 2025 every 4 days. The most recent releases landed on September 13, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | OSSA App | SOE 2025 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 4 days** |
| Size | 49 MB | 112 MB |
| Requires iOS | 15.1 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 17+ |
| Developer | [Purist Industries (PTY) LTD](https://appshunter.io/developer/1477331204) | [Stichting Societas Ophthalmologica Europaea](https://appshunter.io/developer/1463569874) |

## What reviewers say

### OSSA App

[App page](https://appshunter.io/ios/app/ossa-app/id1450236721)

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

**In-app purchases:** none


### SOE 2025

[App page](https://appshunter.io/ios/app/soe-2025/id6744248366)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is OSSA App free?

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

### Is SOE 2025 free?

SOE 2025 is free to download, with no in-app purchases.

### Do OSSA App or SOE 2025 have ads?

Neither OSSA App nor SOE 2025 shows ads.

### Which is updated more often, OSSA App or SOE 2025?

OSSA App ships an update every 4 months, and SOE 2025 every 4 days. Most recently, OSSA App was updated on September 13, 2026 and SOE 2025 on September 10, 2026.

---

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