# Eplus Tutor Pro vs STUNLOCKER

The clearest difference is review sentiment: STUNLOCKER at 74% against Eplus Tutor Pro's 13%. STUNLOCKER also leads on rating (4.0 vs 1.0) and in-app purchases (none vs 2). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Eplus Tutor Pro sells 2 one-off in-app purchases. STUNLOCKER asks for nothing beyond the download.

STUNLOCKER holds the better App Store score, 4.0 against 1.0. That said, the two scores are not equally well evidenced: STUNLOCKER has 24 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 13% of Eplus Tutor Pro's written reviews are positive against 74% of STUNLOCKER's.

Eplus Tutor Pro ships an update every 5 weeks, STUNLOCKER monthly. The most recent releases landed on September 23, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Eplus Tutor Pro | STUNLOCKER |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (2 ratings)](https://appshunter.io/ios/app/eplus-tutor-pro/id1465698710/reviews) | **[4.0 (24 ratings)](https://appshunter.io/ios/app/stunlocker/id1470219023/reviews)** |
| Number of ratings | 2 | **24** |
| Positive reviews | 12.5% of reviews | **73.6% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Monthly** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 20 MB | 14 MB |
| Requires iOS | **12.0** | 12.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Eguides](https://appshunter.io/developer/375122704) | [Vadim Bukin](https://appshunter.io/developer/1470219022) |

## What reviewers say

### Eplus Tutor Pro

[App page](https://appshunter.io/ios/app/eplus-tutor-pro/id1465698710)

Customize your Shimano ebike's engine performance with this app. Adjust factory parameters for free, or unlock higher speed limits through in-app purchases. Features include anti-theft locking and advanced mapping customization.

**Highlights:** Customize engine mapping, Unlock speed limits, Anti-theft engine lock, Preset and custom mappings, Free parameter adjustments

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Racing Eplus | $0.99 | one-time |
| Racing 32 Eplus | $54.99 | one-time |


### 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


## Frequently asked questions

### Is Eplus Tutor Pro free?

Eplus Tutor Pro is free to download, with in-app purchases available.

### Is STUNLOCKER free?

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

### Which has better reviews, Eplus Tutor Pro or STUNLOCKER?

STUNLOCKER is rated higher. Eplus Tutor Pro averages 1.0 out of 5 from 2 ratings, while STUNLOCKER averages 4.0 from 24 ratings.

### Do Eplus Tutor Pro or STUNLOCKER have ads?

Neither Eplus Tutor Pro nor STUNLOCKER shows ads.

### Which is updated more often, Eplus Tutor Pro or STUNLOCKER?

Eplus Tutor Pro ships an update every 5 weeks, and STUNLOCKER monthly. Most recently, Eplus Tutor Pro was updated on September 23, 2026 and STUNLOCKER on October 5, 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.*