# STUNLOCKER vs Upgrado

The clearest difference is review sentiment: STUNLOCKER at 74% against Upgrado's 30%. STUNLOCKER also leads on rating (4.0 vs 2.1) and monetization model (free vs free with in-app purchases). On price, ratings volume, 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.

STUNLOCKER holds the better App Store score, 4.0 against 2.1. Both are backed by a comparable volume of ratings — 24 and 22 respectively. Written reviews point the same way: 74% of STUNLOCKER's written reviews are positive against 30% of Upgrado's.

STUNLOCKER ships an update monthly, Upgrado every 5 months. The most recent releases landed on September 26, 2026 and August 29, 2026 respectively.

## The numbers

| Metric | STUNLOCKER | Upgrado |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (24 ratings)](https://appshunter.io/ios/app/stunlocker/id1470219023/reviews)** | [2.1 (22 ratings)](https://appshunter.io/ios/app/upgrado/id1482090297/reviews) |
| Number of ratings | **24** | 22 |
| Positive reviews | **73.6% of reviews** | 30.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 5 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 14 MB | 29 MB |
| Requires iOS | **12.1** | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Vadim Bukin](https://appshunter.io/developer/1470219022) | [Elite srl](https://appshunter.io/developer/546000017) |

## What reviewers say

### 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

**What reviewers like**

- 🚀 Works well for many users
- 👍 Easy to use and understand
- 💡 Unlocks full potential of e-bikes
- 🚀 Quick response from developer
- 👍 Good value for money

**What reviewers complain about**

- 🐛 Does not work for some users
- 😞 Outrageous customer service (sarcastic)
- 🐛 Incompatible with certain models/firmware
- 🐛 Warranty voiding risk
- 😞 Can't buy license

**Reported bugs**

- One unit does not work
- Customer service is outrageous and sarcastic
- Does not work for changing settings to USA
- Keeps asking to turn bike off and on, use default pin, or no Bluetooth connection
- Doesn't appear to be a way to switch to imperial units

**Requested features**

- Add possibility to change full power to 600w and 100nm on EP8
- Upping the speed limiter on RS motor
- Compatibility with Speedbox
- Imperial units option
- Dark mode option


### Upgrado

[App page](https://appshunter.io/ios/app/upgrado/id1482090297)

This application facilitates firmware upgrades for specific Elite indoor trainers. It automatically detects available updates and guides users through the confirmation and installation process. Ensure your trainer is powered and close to your device for optimal performance.

**Highlights:** Automatic firmware detection, User-confirmed updates, Troubleshooting tips, Bluetooth connection guidance

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

**In-app purchases:** none


## Frequently asked questions

### Is STUNLOCKER free?

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

### Is Upgrado free?

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

### Which has better reviews, STUNLOCKER or Upgrado?

STUNLOCKER is rated higher. STUNLOCKER averages 4.0 out of 5 from 24 ratings, while Upgrado averages 2.1 from 22 ratings.

### Do STUNLOCKER or Upgrado have ads?

Neither STUNLOCKER nor Upgrado shows ads.

### Which is updated more often, STUNLOCKER or Upgrado?

STUNLOCKER ships an update monthly, and Upgrado every 5 months. Most recently, STUNLOCKER was updated on September 26, 2026 and Upgrado on August 29, 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.*