# Souvenirs vs Prisme

The clearest difference is update cadence: Souvenirs at daily against Prisme's every 3 weeks. Prisme's advantage is iOS requirement (15.1 vs 18.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Souvenirs sells 1 in-app purchase, starting at $2.99 per month and Prisme sells 3 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

Souvenirs ships an update daily, Prisme every 3 weeks. The most recent releases landed on October 25, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Souvenirs | Prisme |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Daily** | Every 3 weeks |
| Size | 18 MB | 63 MB |
| Requires iOS | 18.6 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Evrard Regis](https://appshunter.io/developer/1850389205) | [Aurelien Roblin](https://appshunter.io/developer/6794072430) |

## What reviewers say

### Souvenirs

[App page](https://appshunter.io/ios/app/souvenirs/id6756271706)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $2.99 | per month |


### Prisme

[App page](https://appshunter.io/ios/app/prisme-introspection/id6803852902)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Prisme+ mensuel | $4.99 | per month |
| Prisme+ annuel | $29.99 | per year |
| Prisme+ à vie | $59.99 | one-time |


## Frequently asked questions

### Is Souvenirs free?

Souvenirs is free to download, with in-app purchases available.

### Is Prisme free?

Prisme is free to download, with in-app purchases available.

### Do Souvenirs or Prisme have ads?

Neither Souvenirs nor Prisme shows ads.

### Which is updated more often, Souvenirs or Prisme?

Souvenirs ships an update daily, and Prisme every 3 weeks. Most recently, Souvenirs was updated on October 25, 2026 and Prisme on October 29, 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.*