# Classifindex vs SSSM

The clearest difference is update cadence: SSSM at fortnightly against Classifindex's every 19 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.

Classifindex ships an update every 19 months, SSSM fortnightly. The most recent releases landed on September 17, 2026 and June 1, 2026 respectively.

## The numbers

| Metric | Classifindex | SSSM |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 19 months | **Fortnightly** |
| Size | 68 MB | 49 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [CNRS Prévention du risque chimique](https://appshunter.io/developer/892400333) | [EUROPRESS](https://appshunter.io/developer/1151225173) |

## What reviewers say

### Classifindex

[App page](https://appshunter.io/ios/app/classifindex/id892400330)

**Features:** macOS Compatibility

**In-app purchases:** none


### SSSM

[App page](https://appshunter.io/ios/app/sssm/id1557201355)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Classifindex free?

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

### Is SSSM free?

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

### Do Classifindex or SSSM have ads?

Neither Classifindex nor SSSM shows ads.

### Which is updated more often, Classifindex or SSSM?

Classifindex ships an update every 19 months, and SSSM fortnightly. Most recently, Classifindex was updated on September 17, 2026 and SSSM on June 1, 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.*