# PD Measure Ruler vs Mouse Jiggler Undetectable

The clearest difference is rating: Mouse Jiggler Undetectable at 4.7 against PD Measure Ruler's 4.0. Mouse Jiggler Undetectable also leads on ratings volume (272 vs 41). PD Measure Ruler's advantage is ads (none vs shown). On price, review sentiment, update cadence and in-app purchases there is nothing between them.

Both are free to download. PD Measure Ruler sells 4 in-app purchases, starting at $2.99 per 7 days and Mouse Jiggler Undetectable sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Mouse Jiggler Undetectable holds the better App Store score, 4.7 against 4.0. That said, the two scores are not equally well evidenced: Mouse Jiggler Undetectable has 272 ratings behind it against 41, so its average is the more settled of the two. Written reviews point the same way: 27% of PD Measure Ruler's written reviews are positive against 31% of Mouse Jiggler Undetectable's.

PD Measure Ruler ships an update every 6 days, Mouse Jiggler Undetectable weekly. Both last shipped on November 8, 2026.

## The numbers

| Metric | PD Measure Ruler | Mouse Jiggler Undetectable |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (41 ratings)](https://appshunter.io/ios/app/pd-measure-ruler/id6670557555/reviews) | **[4.7 (272 ratings)](https://appshunter.io/ios/app/mouse-jiggler-undetectable/id6737745215/reviews)** |
| Number of ratings | 41 | **272** |
| Positive reviews | 27.3% of reviews | **30.8% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 6 days** | Weekly |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 24 MB | 68 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [VisTech.Projects LLC](https://appshunter.io/developer/620969851) | [Mathieu Meesters](https://appshunter.io/developer/1777710675) |

## What reviewers say

### PD Measure Ruler

[App page](https://appshunter.io/ios/app/pd-measure-ruler/id6670557555)

Accurately measure your pupillary distance (PD) for eyeglasses and VR headsets. Offers both manual and automatic measurement modes for precise results. Optimize your eyewear fit with this user-friendly tool.

**Highlights:** Manual PD measurement, Automatic PD measurement, Accurate and precise readings, User-friendly interface, Eyeglass fitting assistance, VR headset adjustment

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $2.99 | per 7 days |
| Weekly | $4.99 | per 7 days |
| Weekly | $7.99 | per 7 days |
| Monthly | $14.99 | per month |


### Mouse Jiggler Undetectable

[App page](https://appshunter.io/ios/app/mouse-jiggler-undetectable/id6737745215)

This app prevents your computer from locking by simulating mouse movements. It offers customizable modes and settings to keep your screen active without manual intervention. It's a free and convenient alternative to hardware solutions.

**Highlights:** Prevents screen lock, Simulates mouse cursor movement, Scrolling and vibration modes, Undetectable by monitoring systems, Customizable pause and vibration durations, Adjustable screen brightness

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Access | $4.99 | one-time |

**What reviewers like**

- 👍 Works as intended
- 👍 Easy to use
- 👍 Stealth mode useful
- 👍 Free with ads
- 👍 Flexible settings

**What reviewers complain about**

- 😞 Doesn't work
- 😞 Inconsistent performance
- 😞 Ads are frustrating
- 😞 Adware behavior
- 😞 Mouse not responding

**Reported bugs**

- App never worked
- Ads disable functionality
- Sleep mode stays off too long
- Screen locks unexpectedly
- Full page, unskippable ads

**Requested features**

- Remove ads
- Improve consistency
- Fix iPad Pro compatibility
- Allow disabling sleep mode
- Make ads skippable


## Frequently asked questions

### Is PD Measure Ruler free?

PD Measure Ruler is free to download, with in-app purchases available.

### Is Mouse Jiggler Undetectable free?

Mouse Jiggler Undetectable is free to download, with in-app purchases available.

### Which has better reviews, PD Measure Ruler or Mouse Jiggler Undetectable?

Mouse Jiggler Undetectable is rated higher. PD Measure Ruler averages 4.0 out of 5 from 41 ratings, while Mouse Jiggler Undetectable averages 4.7 from 272 ratings.

### Do PD Measure Ruler or Mouse Jiggler Undetectable have ads?

Mouse Jiggler Undetectable shows ads; PD Measure Ruler does not.

### Which is updated more often, PD Measure Ruler or Mouse Jiggler Undetectable?

PD Measure Ruler ships an update every 6 days, and Mouse Jiggler Undetectable weekly. Most recently, PD Measure Ruler was updated on November 8, 2026 and Mouse Jiggler Undetectable on November 8, 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.*