# Pixel Ruler Pro vs HelloBlue

The clearest difference is in-app purchases: Pixel Ruler Pro at none against HelloBlue's 4. HelloBlue's advantage is ads (none vs shown) and update cadence (weekly vs every 3 weeks). On price and device support there is nothing between them.

Both are free to download. HelloBlue sells 4 in-app purchases, starting at $0.99 per 7 days. Pixel Ruler Pro asks for nothing beyond the download.

Pixel Ruler Pro ships an update every 3 weeks, HelloBlue weekly. The most recent releases landed on October 24, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Pixel Ruler Pro | HelloBlue |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/helloblue-bluetooth-debugger/id6766489420/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 3 weeks | **Weekly** |
| Monetization | — | Free with in-app purchases |
| Best chart rank | — | **#161** |
| Size | 44 MB | 24 MB |
| Requires iOS | 18.0 | **16.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [MIZOU, CO., LTD.](https://appshunter.io/developer/1542553141) | [英 陈](https://appshunter.io/developer/1894194353) |

## What reviewers say

### Pixel Ruler Pro

[App page](https://appshunter.io/ios/app/pixel-ruler-pro/id6761318967)

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

**In-app purchases:** none


### HelloBlue

[App page](https://appshunter.io/ios/app/helloblue-bluetooth-debugger/id6766489420)

**Currently charting:** #161 Top Grossing · Developer Tools (US App Store)

This tool streamlines Bluetooth Low Energy device debugging. It allows users to scan, inspect GATT services, exchange data in real-time, and automate testing sequences. Capture and export logs for detailed analysis.

**Highlights:** Scan and identify BLE devices, Inspect GATT services and characteristics, Read and monitor characteristic values live, Send and receive messages in real-time, Automate repetitive testing sequences, Capture and export logs

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Week Subscription | $0.99 | per 7 days |
| Month Subscription | $2.99 | per month |
| Year Subscription | $9.99 | per year |
| Lifetime Subscription | $24.99 | one-time |


## Frequently asked questions

### Is Pixel Ruler Pro free?

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

### Is HelloBlue free?

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

### Do Pixel Ruler Pro or HelloBlue have ads?

Pixel Ruler Pro shows ads; HelloBlue does not.

### Which is updated more often, Pixel Ruler Pro or HelloBlue?

Pixel Ruler Pro ships an update every 3 weeks, and HelloBlue weekly. Most recently, Pixel Ruler Pro was updated on October 24, 2026 and HelloBlue on October 28, 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.*