# SpeedBox App vs STUNLOCKER

The clearest difference is review sentiment: STUNLOCKER at 73% against SpeedBox App's 20%. STUNLOCKER also leads on rating (4.0 vs 3.6) and iOS requirement (12.1 vs 15.0). On price, ratings volume, update cadence and ads there is nothing between them.

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

STUNLOCKER holds the better App Store score, 4.0 against 3.6. Both are backed by a comparable volume of ratings — 11 and 24 respectively. Written reviews point the same way: 20% of SpeedBox App's written reviews are positive against 73% of STUNLOCKER's.

Both ship on a similar rhythm, roughly monthly. The most recent releases landed on September 21, 2026 and June 10, 2026 respectively.

## The numbers

| Metric | SpeedBox App | STUNLOCKER |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.6 (11 ratings)](https://appshunter.io/ios/app/speedbox-app/id1404769262/reviews) | **[4.0 (24 ratings)](https://appshunter.io/ios/app/stunlocker/id1470219023/reviews)** |
| Number of ratings | 11 | **24** |
| Positive reviews | 20.0% of reviews | **73.5% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | Monthly |
| Monetization | Free | Free |
| Size | 6 MB | 14 MB |
| Requires iOS | 15.0 | **12.1** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [SpeedBox Team](https://appshunter.io/developer/1404769261) | [Vadim Bukin](https://appshunter.io/developer/1470219022) |

## What reviewers say

### SpeedBox App

[App page](https://appshunter.io/ios/app/speedbox-app/id1404769262)

Connect to your e-bike's tuning kit via Bluetooth to control its supplementary assistance. Monitor key ride data like speed, trip time, and battery life. Manage your e-bike's performance and settings directly from your phone.

**Highlights:** Bluetooth e-bike tuning kit connection, Control supplementary assistance, Monitor trip time, Track actual speed, View average and maximum speed, Monitor battery life

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

**In-app purchases:** none


### STUNLOCKER

[App page](https://appshunter.io/ios/app/stunlocker/id1470219023)

This application connects to Shimano E-Bike motors via Bluetooth to provide detailed information and allow customization of various settings. Users can monitor battery health, adjust assist levels, change gearing configurations, and manage light settings for a personalized riding experience.

**Highlights:** Connect via Bluetooth to Shimano E-Bike motors, View E-bike information (distance, battery health), Change assist settings, Modify gearing type and chainring size, Adjust light settings, Create presets for quick setups

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SpeedBox App free?

SpeedBox App is free to download, with no in-app purchases.

### Is STUNLOCKER free?

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

### Which has better reviews, SpeedBox App or STUNLOCKER?

STUNLOCKER is rated higher. SpeedBox App averages 3.6 out of 5 from 11 ratings, while STUNLOCKER averages 4.0 from 24 ratings.

### Do SpeedBox App or STUNLOCKER have ads?

Neither SpeedBox App nor STUNLOCKER shows ads.

### Which is updated more often, SpeedBox App or STUNLOCKER?

SpeedBox App ships an update monthly, and STUNLOCKER monthly. Most recently, SpeedBox App was updated on September 21, 2026 and STUNLOCKER on June 10, 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.*