# Tunnel Ninja vs Blue Pebbles

The clearest difference is iOS requirement: Blue Pebbles at 13.0 against Tunnel Ninja's 15.0. On price, update cadence, ads and in-app purchases there is nothing between them.

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

Tunnel Ninja ships an update every 3 months, Blue Pebbles every 4 months. Both last shipped on November 3, 2026.

## The numbers

| Metric | Tunnel Ninja | Blue Pebbles |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/blue-pebbles/id1624698212/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 4 months |
| Monetization | — | Free |
| Size | 50 MB | 37 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Matthew Malarkey](https://appshunter.io/developer/1574316375) | [AON2 Ltd](https://appshunter.io/developer/1444878946) |

## What reviewers say

### Tunnel Ninja

[App page](https://appshunter.io/ios/app/tunnel-ninja/id1621858274)

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

**In-app purchases:** none


### Blue Pebbles

[App page](https://appshunter.io/ios/app/blue-pebbles/id1624698212)

This app serves as a companion to the Brilliant Pebbles audible altimeter. It enhances the functionality and user experience of the altimeter device.

**Highlights:** Companion app functionality, Enhances altimeter device, Audible altimeter integration

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Tunnel Ninja free?

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

### Is Blue Pebbles free?

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

### Do Tunnel Ninja or Blue Pebbles have ads?

Neither Tunnel Ninja nor Blue Pebbles shows ads.

### Which is updated more often, Tunnel Ninja or Blue Pebbles?

Tunnel Ninja ships an update every 3 months, and Blue Pebbles every 4 months. Most recently, Tunnel Ninja was updated on November 3, 2026 and Blue Pebbles on November 3, 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.*