# StochasticGrain vs Vidarium

The clearest difference is update cadence: Vidarium at every 3 days against StochasticGrain's every 7 months. Vidarium also leads on device support (3 vs 1). StochasticGrain's advantage is iOS requirement (17.6 vs 26.0). On price, ads and in-app purchases there is nothing between them.

Both are free to download. StochasticGrain sells 2 one-off in-app purchases and Vidarium sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

StochasticGrain ships an update every 7 months, Vidarium every 3 days. The most recent releases landed on October 1, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | StochasticGrain | Vidarium |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 3 days** |
| Size | 2 MB | 31 MB |
| Requires iOS | **17.6** | 26.0 |
| Devices | iPhone | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Islam Seisembay](https://appshunter.io/developer/1505964950) | [Charlie Monroe Software, s.r.o.](https://appshunter.io/developer/647791583) |

## What reviewers say

### StochasticGrain

[App page](https://appshunter.io/ios/app/stochasticgrain/id6755109222)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Small Coffee | $0.99 | one-time |
| Large Coffee | $2.99 | one-time |


### Vidarium

[App page](https://appshunter.io/ios/app/vidarium/id6787073005)

**Features:** Family Sharing, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Vidarium PRO | $19.99 | one-time |


## Frequently asked questions

### Is StochasticGrain free?

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

### Is Vidarium free?

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

### Do StochasticGrain or Vidarium have ads?

Neither StochasticGrain nor Vidarium shows ads.

### Which is updated more often, StochasticGrain or Vidarium?

StochasticGrain ships an update every 7 months, and Vidarium every 3 days. Most recently, StochasticGrain was updated on October 1, 2026 and Vidarium on October 4, 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.*