# Pythagorus doodlus vs Notivo

The clearest difference is in-app purchases: Notivo at none against Pythagorus doodlus's 1. Notivo also leads on ads (none vs shown). Pythagorus doodlus's advantage is update cadence (every 6 days vs every 5 weeks). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Pythagorus doodlus sells 1 in-app purchase, starting at $4.99 per year. Notivo asks for nothing beyond the download.

Pythagorus doodlus ships an update every 6 days, Notivo every 5 weeks. The most recent releases landed on October 15, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | Pythagorus doodlus | Notivo |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 6 days** | Every 5 weeks |
| Size | 7 MB | 22 MB |
| Requires iOS | **17.6** | 18.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [Stéphan Barbé](https://appshunter.io/developer/313949257) | [BRBR GROUP](https://appshunter.io/developer/1882102236) |

## What reviewers say

### Pythagorus doodlus

[App page](https://appshunter.io/ios/app/pythagorus-doodlus/id6754364531)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $4.99 | per year |


### Notivo

[App page](https://appshunter.io/ios/app/notivo-memory-layer/id6784816954)

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

**In-app purchases:** none


## Frequently asked questions

### Is Pythagorus doodlus free?

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

### Is Notivo free?

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

### Do Pythagorus doodlus or Notivo have ads?

Pythagorus doodlus shows ads; Notivo does not.

### Which is updated more often, Pythagorus doodlus or Notivo?

Pythagorus doodlus ships an update every 6 days, and Notivo every 5 weeks. Most recently, Pythagorus doodlus was updated on October 15, 2026 and Notivo on October 17, 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.*