# Countdown to Zero vs 测量工具

The clearest difference is ads: Countdown to Zero at none against 测量工具's shown. Countdown to Zero also leads on monetization model (free vs free with in-app purchases). 测量工具's advantage is iOS requirement (12.0 vs 15.0). On price, rating, review sentiment and ratings volume there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Countdown to Zero holds the better App Store score, 4.7 against 4.5. Both are backed by a comparable volume of ratings — 50 and 77 respectively. Written reviews point the same way: 92% of Countdown to Zero's written reviews are positive against 84% of 测量工具's.

Countdown to Zero ships an update every 3 weeks, 测量工具 monthly. Both last shipped on October 26, 2026.

## The numbers

| Metric | Countdown to Zero | 测量工具 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (50 ratings)](https://appshunter.io/ios/app/countdown-to-zero-life-count/id1024341891/reviews)** | [4.5 (77 ratings)](https://appshunter.io/ios/app/id1113334130/reviews) |
| Number of ratings | 50 | **77** |
| Positive reviews | **91.9% of reviews** | 84.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 3 weeks** | Monthly |
| Monetization | **Free** | Free with in-app purchases |
| Size | 1 MB | 55 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Zhenlai Xia](https://appshunter.io/developer/1435731218) | [飞剑 姚](https://appshunter.io/developer/1113334129) |

## What reviewers say

### Countdown to Zero

[App page](https://appshunter.io/ios/app/countdown-to-zero-life-count/id1024341891)

This app helps you appreciate life by counting down the estimated number of days, weeks, and months remaining until significant life milestones. It encourages a positive outlook by highlighting the finiteness of experiences and supports custom event tracking.

**Highlights:** Counts down days, weeks, and months, Tracks remaining life events, Supports custom event tracking, Promotes positive life appreciation, Simple and intuitive interface

**Features:** macOS Compatibility

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Countdown to Zero free?

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

### Is 测量工具 free?

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

### Which has better reviews, Countdown to Zero or 测量工具?

Countdown to Zero is rated higher. Countdown to Zero averages 4.7 out of 5 from 50 ratings, while 测量工具 averages 4.5 from 77 ratings.

### Do Countdown to Zero or 测量工具 have ads?

测量工具 shows ads; Countdown to Zero does not.

### Which is updated more often, Countdown to Zero or 测量工具?

Countdown to Zero ships an update every 3 weeks, and 测量工具 monthly. Most recently, Countdown to Zero was updated on October 26, 2026 and 测量工具 on October 26, 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.*