# 测量工具 vs 倒计时

The clearest difference is in-app purchases: 测量工具 at none against 倒计时's 3. 测量工具 also leads on ratings volume (77 vs 1). 倒计时's advantage is rating (5.0 vs 4.5). On price, update cadence, ads and monetization model there is nothing between them.

Both are free to download. 倒计时 sells 3 in-app purchases, starting at $3.99 per 7 days. 测量工具 asks for nothing beyond the download.

倒计时 holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: 测量工具 has 77 ratings behind it against 1, so its average is the more settled of the two.

测量工具 ships an update monthly, 倒计时 every 3 weeks. The most recent releases landed on October 26, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | 测量工具 | 倒计时 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (77 ratings)](https://appshunter.io/ios/app/id1113334130/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/and/id6448464245/reviews)** |
| Number of ratings | **77** | 1 |
| Positive reviews | 84.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Monthly | **Every 3 weeks** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 55 MB | 34 MB |
| Requires iOS | 12.0 | **11.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [飞剑 姚](https://appshunter.io/developer/1113334129) | [浩 陈](https://appshunter.io/developer/1680667246) |

## What reviewers say

### 测量工具

[App page](https://appshunter.io/ios/app/id1113334130)

This utility app offers a suite of measurement tools for your phone. It includes a ruler, protractor, noise meter, distance calculator, level, compass, and flashlight. Easily measure lengths, angles, sound levels, and more with convenient on-the-go tools.

**Highlights:** Ruler (metric/inch), Noise meter (decibel), Protractor (camera-based), Distance measurement, Level tool, Compass, Flashlight

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

**In-app purchases:** none


### 倒计时

[App page](https://appshunter.io/ios/app/and/id6448464245)

This app helps you count down to important dates like anniversaries, birthdays, and holidays. Set reminders to never miss special moments and track your daily life with a built-in diary. It also features a community group for sharing experiences and reminders.

**Highlights:** Countdown to important dates, Set custom reminders, Track birthdays and anniversaries, Daily diary function, Built-in community group, Record special moments

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 周会员 | $3.99 | per 7 days |
| 月会员 | $9.99 | per month |
| 年会员 | $39.99 | per year |


## Frequently asked questions

### Is 测量工具 free?

测量工具 is free to download, with no in-app purchases.

### Is 倒计时 free?

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

### Which has better reviews, 测量工具 or 倒计时?

倒计时 is rated higher. 测量工具 averages 4.5 out of 5 from 77 ratings, while 倒计时 averages 5.0 from 1 ratings.

### Do 测量工具 or 倒计时 have ads?

Both 测量工具 and 倒计时 show ads.

### Which is updated more often, 测量工具 or 倒计时?

测量工具 ships an update monthly, and 倒计时 every 3 weeks. Most recently, 测量工具 was updated on October 26, 2026 and 倒计时 on October 6, 2026.

---

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