# 酷家乐设计师 vs Ruler

The clearest difference is rating: 酷家乐设计师 at 4.7 against Ruler's 2.6. 酷家乐设计师 also leads on review sentiment (96% vs 54%) and update cadence (every 6 weeks vs every 5 months). Ruler's advantage is in-app purchases (none vs 16) and ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. 酷家乐设计师 sells 16 in-app purchases, starting at $8.99 per month. Ruler asks for nothing beyond the download.

酷家乐设计师 holds the better App Store score, 4.7 against 2.6. Both are backed by a comparable volume of ratings — 159 and 40 respectively. Written reviews point the same way: 96% of 酷家乐设计师's written reviews are positive against 54% of Ruler's.

酷家乐设计师 ships an update every 6 weeks, Ruler every 5 months. The most recent releases landed on November 1, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | 酷家乐设计师 | Ruler |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (159 ratings)](https://appshunter.io/ios/app/id1026768962/reviews)** | [2.6 (40 ratings)](https://appshunter.io/ios/app/ruler-accurate-ruler/id1084232739/reviews) |
| Number of ratings | **159** | 40 |
| Positive reviews | **95.8% of reviews** | 54.2% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 6 weeks** | Every 5 months |
| Monetization | — | Free |
| Size | 268 MB | 4 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [MeiJianHangZhou](https://appshunter.io/developer/1244986466) | [祥祎 刘](https://appshunter.io/developer/1071522659) |

## What reviewers say

### 酷家乐设计师

[App page](https://appshunter.io/ios/app/id1026768962)

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

**In-app purchases (16)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 会员连续包月卡 | $8.99 | per month |
| 酷家乐AI特惠升级包 | $0.99 | one-time |
| 3000核豆 | $3.99 | one-time |
| 酷家乐AI升级包 | $3.99 | one-time |
| AI会员月卡首购 | $7.99 | one-time |
| 6000核豆 | $8.99 | one-time |
| 会员月卡 | $12.99 | one-time |
| 10000核豆 | $14.99 | one-time |
| AI会员季卡首购 | $19.99 | one-time |
| 20000核豆 | $29.99 | one-time |
| AI会员半年卡首购 | $39.99 | one-time |
| 会员半年卡 | $47.99 | one-time |
| 会员特惠年卡 | $64.99 | one-time |
| AI会员年卡首购 | $69.99 | one-time |
| 50000核豆 | $69.99 | one-time |
| 会员年卡 | $84.99 | one-time |


### Ruler

[App page](https://appshunter.io/ios/app/ruler-accurate-ruler/id1084232739)

This application provides a precise measurement tool by rendering according to your device's screen width specifications. It has been tested on a wide range of Apple devices to ensure accuracy for your measuring needs.

**Highlights:** Accurate screen-based rendering, Device-specific calibration, Wide device compatibility, Precise measurement tool

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

**In-app purchases:** none

**What reviewers like**

- ✅ Accurate measurements compared to physical rulers
- 👍 Simple and intuitive user interface
- 🎯 No intrusive ads or minimal advertising
- ⚡ Fast and responsive performance
- 🆓 Free to use application

**What reviewers complain about**

- 🐛 Blank white screen on newer devices
- ❌ No support for iPhone 12 and newer models
- ❌ No support for iPhone X and iPhone 11
- 🔄 App not updated in years
- ⚠️ Device compatibility detection issues

**Reported bugs**

- White/blank screen display on newer iOS versions
- App crashes and freezes on launch
- Ruler not rendering or displaying
- Toggle switches stuck in grey/disabled state
- Incorrect device identification (iPad size misidentification)

**Requested features**

- Support for iPhone 12, 13, 14, 15, 16 and newer models
- Millimeter measurement option
- Longer ruler display
- Fractional inches (1/16, 1/8) instead of decimal inches
- Support for newer iPad models


## Frequently asked questions

### Is 酷家乐设计师 free?

酷家乐设计师 is free to download, with in-app purchases available.

### Is Ruler free?

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

### Which has better reviews, 酷家乐设计师 or Ruler?

酷家乐设计师 is rated higher. 酷家乐设计师 averages 4.7 out of 5 from 159 ratings, while Ruler averages 2.6 from 40 ratings.

### Do 酷家乐设计师 or Ruler have ads?

酷家乐设计师 shows ads; Ruler does not.

### Which is updated more often, 酷家乐设计师 or Ruler?

酷家乐设计师 ships an update every 6 weeks, and Ruler every 5 months. Most recently, 酷家乐设计师 was updated on November 1, 2026 and Ruler on October 20, 2026.

---

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