# Zen Checklists vs Outliner by codediary

The clearest difference is in-app purchases: Outliner by codediary at none against Zen Checklists's 2. Zen Checklists's advantage is iOS requirement (15.1 vs 18.6). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Zen Checklists sells 2 in-app purchases, starting at $1.99 per month. Outliner by codediary asks for nothing beyond the download.

Zen Checklists ships an update every 3 days, Outliner by codediary every 5 days. The most recent releases landed on October 28, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Zen Checklists | Outliner by codediary |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 5 days |
| Size | 45 MB | 7 MB |
| Requires iOS | **15.1** | 18.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Stellar Apps SL](https://appshunter.io/developer/1815942509) | [jeong kyu lee](https://appshunter.io/developer/366597249) |

## What reviewers say

### Zen Checklists

[App page](https://appshunter.io/ios/app/zen-checklists/id6740534910)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Zen Checklists Premium Monthly | $1.99 | per month |
| Zen Checklists Premium Yearly | $9.99 | per year |


### Outliner by codediary

[App page](https://appshunter.io/ios/app/outliner-by-codediary/id6786943296)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Zen Checklists free?

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

### Is Outliner by codediary free?

Outliner by codediary is free to download, with no in-app purchases.

### Do Zen Checklists or Outliner by codediary have ads?

Neither Zen Checklists nor Outliner by codediary shows ads.

### Which is updated more often, Zen Checklists or Outliner by codediary?

Zen Checklists ships an update every 3 days, and Outliner by codediary every 5 days. Most recently, Zen Checklists was updated on October 28, 2026 and Outliner by codediary on October 24, 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.*