# RILEM vs ISARA Alumni

The clearest difference is update cadence: RILEM at every 9 months against ISARA Alumni's every 43 months. 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.

RILEM ships an update every 9 months, ISARA Alumni every 43 months. The most recent releases landed on November 6, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | RILEM | ISARA Alumni |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 9 months** | Every 43 months |
| Size | 6 MB | 7 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [RILEM Publications](https://appshunter.io/developer/1478599497) | [ASSOCIATION DES INGENIEURS ISARA-LYON](https://appshunter.io/developer/1659819291) |

## What reviewers say

### RILEM

[App page](https://appshunter.io/ios/app/rilem/id1258497395)

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

**In-app purchases:** none


### ISARA Alumni

[App page](https://appshunter.io/ios/app/isara-alumni/id1659819289)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is RILEM free?

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

### Is ISARA Alumni free?

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

### Do RILEM or ISARA Alumni have ads?

Neither RILEM nor ISARA Alumni shows ads.

### Which is updated more often, RILEM or ISARA Alumni?

RILEM ships an update every 9 months, and ISARA Alumni every 43 months. Most recently, RILEM was updated on November 6, 2026 and ISARA Alumni on November 7, 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.*