# SOE 2025 vs ISER 2026

The clearest difference is update cadence: SOE 2025 at every 4 days against ISER 2026's every 3 weeks. 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.

SOE 2025 ships an update every 4 days, ISER 2026 every 3 weeks. The most recent releases landed on September 10, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | SOE 2025 | ISER 2026 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 3 weeks |
| Size | 112 MB | 73 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 17+ |
| Developer | [Stichting Societas Ophthalmologica Europaea](https://appshunter.io/developer/1463569874) | [International Society for Eye Research](https://appshunter.io/developer/1660744756) |

## What reviewers say

### SOE 2025

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

**Features:** macOS Compatibility

**In-app purchases:** none


### ISER 2026

[App page](https://appshunter.io/ios/app/iser-2026/id6787944197)

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

**In-app purchases:** none


## Frequently asked questions

### Is SOE 2025 free?

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

### Is ISER 2026 free?

ISER 2026 is free to download, with no in-app purchases.

### Do SOE 2025 or ISER 2026 have ads?

Neither SOE 2025 nor ISER 2026 shows ads.

### Which is updated more often, SOE 2025 or ISER 2026?

SOE 2025 ships an update every 4 days, and ISER 2026 every 3 weeks. Most recently, SOE 2025 was updated on September 10, 2026 and ISER 2026 on October 2, 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.*