# Unit Converter vs QQ通讯录

The clearest difference is rating: Unit Converter at 4.8 against QQ通讯录's 2.3. Unit Converter also leads on review sentiment (88% vs 51%) and ratings volume (1.5K vs 8). QQ通讯录's advantage is in-app purchases (none vs 3) and ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. Unit Converter sells 3 in-app purchases, starting at $2.99 per month. QQ通讯录 asks for nothing beyond the download.

Unit Converter holds the better App Store score, 4.8 against 2.3. That said, the two scores are not equally well evidenced: Unit Converter has 1.5K ratings behind it against 8, so its average is the more settled of the two. Written reviews point the same way: 88% of Unit Converter's written reviews are positive against 51% of QQ通讯录's.

Unit Converter ships an update weekly, QQ通讯录 every 3 weeks. The most recent releases landed on October 26, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | Unit Converter | QQ通讯录 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (1.5K ratings)](https://appshunter.io/ios/app/unit-converter-milas-tools/id403110615/reviews)** | [2.3 (8 ratings)](https://appshunter.io/ios/app/qq/id446363243/reviews) |
| Number of ratings | **1.5K** | 8 |
| Positive reviews | **87.7% of reviews** | 50.6% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Weekly** | Every 3 weeks |
| Monetization | Free with in-app purchases | **Free** |
| Size | 13 MB | 17 MB |
| Requires iOS | 17.6 | **4.3** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Scott DeSapio](https://appshunter.io/developer/403110618) | [Tencent Mobile International Limited](https://appshunter.io/developer/504515421) |

## What reviewers say

### Unit Converter

[App page](https://appshunter.io/ios/app/unit-converter-milas-tools/id403110615)

This app offers a comprehensive unit conversion tool with over 300 units across 27 categories. It supports compound units, date calculations, and conversions between various number systems, including historical units. The interface is designed for ease of use with smart keyboards and customizable display options.

**Highlights:** 27 conversion categories, 300+ units, Compound unit support, Date calculator, Fractions and number conversions, Historical units, Customizable interface

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Mila's Tools PRO Monthly | $2.99 | per month |
| Mila's Tools PRO Yearly | $6.99 | per year |
| Mila's Tools PRO Lifetime | $9.99 | one-time |

**What reviewers like**

- 👍 Easy to use
- 🚀 Quick and accurate conversions
- 💡 Comprehensive list of units
- 🔍 Convenient for everyday use
- ⭐ Reliable and consistent

**What reviewers complain about**

- 🐛 Scrolling issues on newer devices
- 🔍 Limited customization options
- 💰 Desire for free version to remain free

**Reported bugs**

- Crashes or freezes on some devices
- Conversion results not displaying properly

**Requested features**

- Ability to customize order of conversion units
- Addition of more specialized units (e.g. astronomical distances)
- Improved scrolling functionality on all devices


### QQ通讯录

[App page](https://appshunter.io/ios/app/qq/id446363243)

This app offers a secure and intelligent way to manage your contacts. It provides features like cloud backup, contact organization, quick search, and birthday reminders. Stay connected with friends' updates and enjoy various communication tools.

**Highlights:** Cloud contact backup and restore, Intelligent contact organization, Super fast contact search, Birthday reminders (lunar and solar), Batch import contact avatars, Free network messaging

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

**In-app purchases:** none


## Frequently asked questions

### Is Unit Converter free?

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

### Is QQ通讯录 free?

QQ通讯录 is free to download, with no in-app purchases.

### Which has better reviews, Unit Converter or QQ通讯录?

Unit Converter is rated higher. Unit Converter averages 4.8 out of 5 from 1.5K ratings, while QQ通讯录 averages 2.3 from 8 ratings.

### Do Unit Converter or QQ通讯录 have ads?

Unit Converter shows ads; QQ通讯录 does not.

### Which is updated more often, Unit Converter or QQ通讯录?

Unit Converter ships an update weekly, and QQ通讯录 every 3 weeks. Most recently, Unit Converter was updated on October 26, 2026 and QQ通讯录 on October 21, 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.*