# STUNLOCKER vs e

The clearest difference is review sentiment: STUNLOCKER at 74% against e's 17%. STUNLOCKER also leads on update cadence (monthly vs every 3 months) and ratings volume (24 vs 1). e's advantage is rating (5.0 vs 4.0). On price, ads, in-app purchases and monetization model there is nothing between them.

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

e holds the better App Store score, 5.0 against 4.0. That said, the two scores are not equally well evidenced: STUNLOCKER has 24 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 74% of STUNLOCKER's written reviews are positive against 17% of e's, so the app with the better star average is not the one people write more warmly about.

STUNLOCKER ships an update monthly, e every 3 months. The most recent releases landed on October 5, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | STUNLOCKER | e |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (24 ratings)](https://appshunter.io/ios/app/stunlocker/id1470219023/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/e-sync-connection/id1671992159/reviews)** |
| Number of ratings | **24** | 1 |
| Positive reviews | **73.6% of reviews** | 16.7% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 3 months |
| Monetization | Free | Free |
| Size | 14 MB | 30 MB |
| Requires iOS | **12.1** | 14.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Vadim Bukin](https://appshunter.io/developer/1470219022) | [ECHOWELL ELECTRONIC CO., LTD](https://appshunter.io/developer/725311213) |

## 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


### e

[App page](https://appshunter.io/ios/app/e-sync-connection/id1671992159)

This app connects to compatible e-bike devices to display real-time riding information, including speed and heart rate. It records your cycling activities, generates FIT files, and allows for automatic or manual uploads to Strava. Review and edit your past rides with weekly, monthly, and yearly summaries.

**Highlights:** Large sync display for e-bike data, Personal sub-screen with selectable orientation, Records riding activity as FIT files, Auto/manual upload to Strava, Heart rate monitor integration, Activity review and editing, Weekly, monthly, yearly activity summaries

**In-app purchases:** none


## Frequently asked questions

### Is STUNLOCKER free?

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

### Is e free?

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

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

e is rated higher. STUNLOCKER averages 4.0 out of 5 from 24 ratings, while e averages 5.0 from 1 ratings.

### Do STUNLOCKER or e have ads?

Neither STUNLOCKER nor e shows ads.

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

STUNLOCKER ships an update monthly, and e every 3 months. Most recently, STUNLOCKER was updated on October 5, 2026 and e on September 28, 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.*