# OKKO vs Daopen

The clearest difference is in-app purchases: OKKO at none against Daopen's 1. OKKO also leads on ads (none vs shown). Daopen's advantage is iOS requirement (15.0 vs 17.2). On price, update cadence and device support there is nothing between them.

Both are free to download. Daopen sells 1 one-off in-app purchase. OKKO asks for nothing beyond the download.

OKKO ships an update every 3 days, Daopen every 4 days. The most recent releases landed on October 28, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | OKKO | Daopen |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 3 days** | Every 4 days |
| Size | 33 MB | 74 MB |
| Requires iOS | 17.2 | **15.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Abdallah Rahal](https://appshunter.io/developer/1701957754) | [Meongmungi](https://appshunter.io/developer/6816377431) |

## What reviewers say

### OKKO

[App page](https://appshunter.io/ios/app/okko-simple-habit-tracker/id6758561437)

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

**In-app purchases:** none


### Daopen

[App page](https://appshunter.io/ios/app/daopen-hwp-odt-pdf-reader/id6816377429)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads Forever | $5.99 | one-time |


## Frequently asked questions

### Is OKKO free?

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

### Is Daopen free?

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

### Do OKKO or Daopen have ads?

Daopen shows ads; OKKO does not.

### Which is updated more often, OKKO or Daopen?

OKKO ships an update every 3 days, and Daopen every 4 days. Most recently, OKKO was updated on October 28, 2026 and Daopen on October 29, 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.*