# Pith vs Atenium

The clearest difference is update cadence: Atenium at every 8 days against Pith's every 3 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Pith sells 1 one-off in-app purchase and Atenium sells 5 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

Pith ships an update every 3 months, Atenium every 8 days. Both last shipped on October 31, 2026.

## The numbers

| Metric | Pith | Atenium |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 8 days** |
| Size | 3 MB | 118 MB |
| Requires iOS | 18.0 | 18.0 |
| Devices | iPhone, iPad | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Claudiu Valentin Sararu](https://appshunter.io/developer/1884891322) | [Patrick Perazzini](https://appshunter.io/developer/1884130435) |

## What reviewers say

### Pith

[App page](https://appshunter.io/ios/app/pith-study-flashcards/id6777970649)

**Features:** Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pith Pro | $5.99 | one-time |


### Atenium

[App page](https://appshunter.io/ios/app/atenium-study-and-flashcards/id6788842031)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support, SharePlay

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Atenium Pro (1 Month) | $3.99 | per month |
| Atenium Complete - Mensual | $6.99 | per month |
| Atenium Pro (1 Year) | $24.99 | per year |
| Atenium Complete - Annual | $49.99 | per year |
| Atenium Pro Lifetime | $89.99 | one-time |


## Frequently asked questions

### Is Pith free?

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

### Is Atenium free?

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

### Do Pith or Atenium have ads?

Neither Pith nor Atenium shows ads.

### Which is updated more often, Pith or Atenium?

Pith ships an update every 3 months, and Atenium every 8 days. Most recently, Pith was updated on October 31, 2026 and Atenium on October 31, 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.*