# Daily Data Tracker vs 成友笔记

The clearest difference is update cadence: Daily Data Tracker at weekly against 成友笔记's every 17 months. 成友笔记's advantage is iOS requirement (13.0 vs 18.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Daily Data Tracker sells 1 in-app purchase, starting at $0.99 per month and 成友笔记 sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Daily Data Tracker ships an update weekly, 成友笔记 every 17 months. The most recent releases landed on September 22, 2026 and June 1, 2026 respectively.

## The numbers

| Metric | Daily Data Tracker | 成友笔记 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.9 (9 ratings)](https://appshunter.io/ios/app/daily-data-tracker/id372593989/reviews)** | — |
| Number of ratings | **9** | — |
| Positive reviews | 40.6% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Every 17 months |
| Monetization | Freemium | — |
| Size | 10 MB | 29 MB |
| Requires iOS | 18.6 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [文睿 李](https://appshunter.io/developer/372593992) | [Wu Lingli](https://appshunter.io/developer/1565327162) |

## What reviewers say

### Daily Data Tracker

[App page](https://appshunter.io/ios/app/daily-data-tracker/id372593989)

Easily record and track personal daily metrics like weight, blood pressure, or child's growth. Customize data categories, visualize trends with charts, and set reminders to build good habits. Securely store all your information locally.

**Highlights:** Customizable data categories, Visualize trends with charts, Data export, backup, and recovery, Built-in reminder function, Local data storage

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly Subscription | $0.99 | per month |


### 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 |


## Frequently asked questions

### Is Daily Data Tracker free?

Daily Data Tracker is free to download, with in-app purchases available.

### Is 成友笔记 free?

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

### Do Daily Data Tracker or 成友笔记 have ads?

Neither Daily Data Tracker nor 成友笔记 shows ads.

### Which is updated more often, Daily Data Tracker or 成友笔记?

Daily Data Tracker ships an update weekly, and 成友笔记 every 17 months. Most recently, Daily Data Tracker was updated on September 22, 2026 and 成友笔记 on June 1, 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.*