# 成友笔记 vs C.md

The clearest difference is update cadence: C.md at every 4 days against 成友笔记's every 17 months. 成友笔记's advantage is iOS requirement (13.0 vs 17.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. 成友笔记 sells 1 one-off in-app purchase and C.md sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

成友笔记 ships an update every 17 months, C.md every 4 days. The most recent releases landed on September 20, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | 成友笔记 | C.md |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 17 months | **Every 4 days** |
| Size | 29 MB | 173 MB |
| Requires iOS | **13.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Wu Lingli](https://appshunter.io/developer/1565327162) | [建东 高](https://appshunter.io/developer/1597492102) |

## What reviewers say

### 成友笔记

[App page](https://appshunter.io/ios/app/id6673905437)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads Forever | $2.99 | one-time |


### C.md

[App page](https://appshunter.io/ios/app/cmd-markdown-reader/id6810085356)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| C.md Pro | $9.99 | one-time |


## Frequently asked questions

### Is 成友笔记 free?

成友笔记 is free to download, with in-app purchases available.

### Is C.md free?

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

### Do 成友笔记 or C.md have ads?

Neither 成友笔记 nor C.md shows ads.

### Which is updated more often, 成友笔记 or C.md?

成友笔记 ships an update every 17 months, and C.md every 4 days. Most recently, 成友笔记 was updated on September 20, 2026 and C.md on October 8, 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.*