# PennyNote vs Duoza

The clearest difference is in-app purchases: Duoza at none against PennyNote's 3. PennyNote's advantage is iOS requirement (12.0 vs 17.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. PennyNote sells 3 one-off in-app purchases. Duoza asks for nothing beyond the download.

PennyNote ships an update every 9 days, Duoza fortnightly. The most recent releases landed on October 24, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | PennyNote | Duoza |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 9 days** | Fortnightly |
| Size | 55 MB | 7 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [鑫 张](https://appshunter.io/developer/1833928238) | [耀 何](https://appshunter.io/developer/1896515984) |

## What reviewers say

### PennyNote

[App page](https://appshunter.io/ios/app/pennynote/id6751202181)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 月度会员 | $0.99 | one-time |
| 年度会员 | $6.99 | one-time |
| 永久会员 | $7.99 | one-time |


### Duoza

[App page](https://appshunter.io/ios/app/duoza/id6771247273)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is PennyNote free?

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

### Is Duoza free?

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

### Do PennyNote or Duoza have ads?

Neither PennyNote nor Duoza shows ads.

### Which is updated more often, PennyNote or Duoza?

PennyNote ships an update every 9 days, and Duoza fortnightly. Most recently, PennyNote was updated on October 24, 2026 and Duoza on October 5, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*