# ISSM vs MEFS 2026

The clearest difference is update cadence: ISSM at every 6 weeks against MEFS 2026's every 10 months. MEFS 2026's advantage is iOS requirement (13.0 vs 15.5). 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.

ISSM ships an update every 6 weeks, MEFS 2026 every 10 months. The most recent releases landed on September 19, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | ISSM | MEFS 2026 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 10 months |
| Size | 121 MB | 154 MB |
| Requires iOS | 15.5 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [International Society for Sexual Medicine](https://appshunter.io/developer/1712844202) | [Ramzi Abou abdallah](https://appshunter.io/developer/1773305740) |

## What reviewers say

### ISSM

[App page](https://appshunter.io/ios/app/issm/id6470016670)

**Features:** macOS Compatibility

**In-app purchases:** none


### MEFS 2026

[App page](https://appshunter.io/ios/app/mefs-2026/id6736768471)

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


## Frequently asked questions

### Is ISSM free?

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

### Is MEFS 2026 free?

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

### Do ISSM or MEFS 2026 have ads?

Neither ISSM nor MEFS 2026 shows ads.

### Which is updated more often, ISSM or MEFS 2026?

ISSM ships an update every 6 weeks, and MEFS 2026 every 10 months. Most recently, ISSM was updated on September 19, 2026 and MEFS 2026 on September 9, 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.*