# 测量工具 vs DG

The clearest difference is rating: 测量工具 at 4.5 against DG's 3.6. 测量工具 also leads on review sentiment (84% vs 56%) and update cadence (monthly vs every 4 months). DG's advantage is ads (none vs shown) and monetization model (free vs free with in-app purchases). On price, in-app purchases, device support and iOS requirement there is nothing between them.

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

测量工具 holds the better App Store score, 4.5 against 3.6. That said, the two scores are not equally well evidenced: 测量工具 has 77 ratings behind it against 14, so its average is the more settled of the two. Written reviews point the same way: 84% of 测量工具's written reviews are positive against 56% of DG's.

测量工具 ships an update monthly, DG every 4 months. The most recent releases landed on November 1, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | 测量工具 | DG |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (77 ratings)](https://appshunter.io/ios/app/id1113334130/reviews)** | [3.6 (14 ratings)](https://appshunter.io/ios/app/dg-lab/id1480806144/reviews) |
| Number of ratings | **77** | 14 |
| Positive reviews | **84.0% of reviews** | 55.6% of reviews |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Monthly** | Every 4 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 55 MB | 53 MB |
| Requires iOS | 12.0 | **11.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [飞剑 姚](https://appshunter.io/developer/1113334129) | [BeiJing SuMeng Technology Co.,Ltd.](https://appshunter.io/developer/1478400868) |

## 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


### DG

[App page](https://appshunter.io/ios/app/dg-lab/id1480806144)

This professional-level software offers advanced control over erotic stimulation devices. It features an adaptive pulse algorithm designed to enhance sensation and stability, with customizable settings for waveforms, intensity, and timing across two independent channels. Advanced users can fine-tune parameters for a personalized experience.

**Highlights:** Adaptive pulse algorithm, Customizable waveform, intensity, frequency, speed, timing, cycle, Independent dual-channel control, Physiological data-based stimulation, G-spot edge locking

**In-app purchases:** none


## Frequently asked questions

### Is 测量工具 free?

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

### Is DG free?

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

### Which has better reviews, 测量工具 or DG?

测量工具 is rated higher. 测量工具 averages 4.5 out of 5 from 77 ratings, while DG averages 3.6 from 14 ratings.

### Do 测量工具 or DG have ads?

测量工具 shows ads; DG does not.

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

测量工具 ships an update monthly, and DG every 4 months. Most recently, 测量工具 was updated on November 1, 2026 and DG on October 10, 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.*