# Systems vs Octodo

The clearest difference is in-app purchases: Octodo at none against Systems's 4. Octodo also leads on update cadence (every 4 days vs every 4 weeks) and iOS requirement (16.0 vs 26.0). On price, ads and device support there is nothing between them.

Both are free to download. Systems sells 4 in-app purchases, starting at $3.99 per 7 days. Octodo asks for nothing beyond the download.

Systems ships an update every 4 weeks, Octodo every 4 days. The most recent releases landed on October 28, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Systems | Octodo |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 weeks | **Every 4 days** |
| Size | 70 MB | 6 MB |
| Requires iOS | 26.0 | **16.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Adam Kovacs](https://appshunter.io/developer/1814096456) | [Hrvoje Krizic](https://appshunter.io/developer/1820443887) |

## What reviewers say

### Systems

[App page](https://appshunter.io/ios/app/systems-checklists/id6746172413)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Systems Pro Weekly | $3.99 | per 7 days |
| Systems Pro (1 Month) | $4.99 | per month |
| Systems Pro (1 Year) | $19.99 | per year |
| Systems Pro (Lifetime) | $49.99 | one-time |


### Octodo

[App page](https://appshunter.io/ios/app/octodo-todos-made-fun/id6747261596)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Systems free?

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

### Is Octodo free?

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

### Do Systems or Octodo have ads?

Neither Systems nor Octodo shows ads.

### Which is updated more often, Systems or Octodo?

Systems ships an update every 4 weeks, and Octodo every 4 days. Most recently, Systems was updated on October 28, 2026 and Octodo 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.*