# Purp vs Zeno Study

The clearest difference is update cadence: Zeno Study at every 3 days against Purp's every 2 weeks. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Purp sells 1 in-app purchase, starting at $12.99 per month and Zeno Study sells 3 in-app purchases, starting at $8.99 per month. Whichever you choose, the download price is not the number that matters.

Purp ships an update every 2 weeks, Zeno Study every 3 days. The most recent releases landed on October 14, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Purp | Zeno Study |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 3 days** |
| Size | 50 MB | 62 MB |
| Requires iOS | **15.1** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Mahmoud Mouayad Messadi](https://appshunter.io/developer/1865259692) | [Systeme Digital GmbH](https://appshunter.io/developer/1896251103) |

## What reviewers say

### Purp

[App page](https://appshunter.io/ios/app/purp-ai-study-assistant/id6757203452)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Purp Premium | $12.99 | per month |


### Zeno Study

[App page](https://appshunter.io/ios/app/zeno-study-next-gen-learning/id6766246583)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Zeno Pro Monthly | $8.99 | per month |
| Zeno Pro (monthly) | $12.99 | per month |
| Zeno Pro (yearly) | $89.99 | per year |


## Frequently asked questions

### Is Purp free?

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

### Is Zeno Study free?

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

### Do Purp or Zeno Study have ads?

Neither Purp nor Zeno Study shows ads.

### Which is updated more often, Purp or Zeno Study?

Purp ships an update every 2 weeks, and Zeno Study every 3 days. Most recently, Purp was updated on October 14, 2026 and Zeno Study on October 6, 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.*