# Sonar Ruler vs bluetooth scanner assistant

The clearest difference is review sentiment: bluetooth scanner assistant at 75% against Sonar Ruler's 44%. bluetooth scanner assistant also leads on update cadence (monthly vs every 105 months) and iOS requirement (12.0 vs 18.0). On price, ads, in-app purchases and monetization model there is nothing between them.

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

Sonar Ruler ships an update every 105 months, bluetooth scanner assistant monthly. The most recent releases landed on November 12, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | Sonar Ruler | bluetooth scanner assistant |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.7 (3 ratings)](https://appshunter.io/ios/app/sonar-ruler/id324621243/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 43.5% of reviews | **75.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 105 months | **Monthly** |
| Monetization | Paid | Paid |
| Size | 5 MB | 17 MB |
| Requires iOS | 18.0 | **12.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Laan Labs](https://appshunter.io/developer/310916919) | [江 王](https://appshunter.io/developer/1665492889) |

## What reviewers say

### Sonar Ruler

[App page](https://appshunter.io/ios/app/sonar-ruler/id324621243)

This experimental app uses your iPhone's speaker to send out sonic pulses and measures the echo to estimate distances up to 60 feet. It's a fun and innovative way to explore sonar principles, perfect for educational purposes or impressing friends with unique iPhone capabilities.

**Highlights:** Sonic distance measurement, Up to 60 feet range, Selectable units (feet, inches, meters), Custom saved settings, Educational sonar demonstration

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 💡 Innovative sonar technology using iPhone hardware
- 🎯 Accurate measurements when used correctly (±0.5-1 inch)
- 📚 Educational value for learning sound principles
- 🎮 Fun novelty app for impressing friends
- ⚙️ Customizable settings for different environments

**What reviewers complain about**

- 🐛 Crashes immediately on many iPhone models
- ❌ Doesn't work on older iPhone generations (iPhone 4, 4S, 5)
- 🔊 Highly sensitive to background noise and interference
- 😕 Steep learning curve and unintuitive interface
- ⚠️ Inconsistent and unreliable measurements

**Reported bugs**

- App crashes within 3 seconds of opening on iPhone 6 and older models
- Won't open on iOS 8.4 and later versions
- No chirping sound emitted on some devices
- Feedback loop and screaming noise on certain hardware
- Phone locks up requiring hard restart

**Requested features**

- Room mapping by rotating phone in circle
- Vertical distance measurement capability
- Better ambient noise filtering
- Clearer, more intuitive user interface
- Optimized default settings (frequency, filter, chirp)


### bluetooth scanner assistant

[App page](https://appshunter.io/ios/app/bluetooth-scanner-assistant/id6465033721)

This utility helps you scan for nearby Bluetooth devices, establish connections, and perform debugging. It offers a clean, ad-free experience with no in-app purchases.

**Highlights:** Scan surrounding Bluetooth devices, Establish connections, Perform debugging, Ad-free experience, No in-app purchases

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

**In-app purchases:** none


## Frequently asked questions

### Is Sonar Ruler free?

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

### Is bluetooth scanner assistant free?

bluetooth scanner assistant is free to download, with no in-app purchases.

### Do Sonar Ruler or bluetooth scanner assistant have ads?

Neither Sonar Ruler nor bluetooth scanner assistant shows ads.

### Which is updated more often, Sonar Ruler or bluetooth scanner assistant?

Sonar Ruler ships an update every 105 months, and bluetooth scanner assistant monthly. Most recently, Sonar Ruler was updated on November 12, 2026 and bluetooth scanner assistant on November 7, 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.*