# Sonar Ruler vs ClinoScope

The clearest difference is review sentiment: ClinoScope at 100% against Sonar Ruler's 43%. ClinoScope also leads on update cadence (every 11 months vs every 94 months). Sonar Ruler's advantage is price ($0.99 vs $3.99) and device support (3 vs 1). On ads, in-app purchases and monetization model there is nothing between them.

Sonar Ruler costs $0.99 and ClinoScope $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Sonar Ruler ships an update every 94 months, ClinoScope every 11 months. The most recent releases landed on October 29, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Sonar Ruler | ClinoScope |
| --- | --- | --- |
| Price | **$0.99** | $3.99 |
| Rating | **[2.7 (3 ratings)](https://appshunter.io/ios/app/sonar-ruler/id324621243/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 43.5% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 94 months | **Every 11 months** |
| Monetization | Paid | Paid |
| Size | 13 MB | 0 MB |
| Requires iOS | **8.1** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Laan Labs](https://appshunter.io/developer/310916919) | [TOON,LLC](https://appshunter.io/developer/633948723) |

## 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)


### ClinoScope

[App page](https://appshunter.io/ios/app/clinoscope/id1105812601)

This tool measures tilt angles and object inclination using your device's sensors. It offers real-time display of slopes and angles in different modes, with the ability to save measurements as images.

**Highlights:** Measures 3D angles of elevation, slope, and inclination, INCLINE mode for inclinometer readings, TIME mode for gyro-positioning time graph, Adjustable sensor sampling period, Snapshot feature to save measurements, Supports various iPhone orientations

**In-app purchases:** none


## Frequently asked questions

### Is Sonar Ruler free?

Sonar Ruler costs $0.99, with no in-app purchases.

### Is ClinoScope free?

ClinoScope costs $3.99, with no in-app purchases.

### Do Sonar Ruler or ClinoScope have ads?

Neither Sonar Ruler nor ClinoScope shows ads.

### Which is updated more often, Sonar Ruler or ClinoScope?

Sonar Ruler ships an update every 94 months, and ClinoScope every 11 months. Most recently, Sonar Ruler was updated on October 29, 2026 and ClinoScope on October 24, 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.*