# TROMOX vs KeyPay

The clearest difference is in-app purchases: TROMOX at none against KeyPay's 10. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. KeyPay sells 10 one-off in-app purchases. TROMOX asks for nothing beyond the download.

TROMOX ships an update every 3 months, KeyPay every 2 months. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | TROMOX | KeyPay |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/tromox/id6446191527/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | Free | — |
| Size | 165 MB | 28 MB |
| Requires iOS | 14.0 | **13** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Hangzhou Tromox Technology Co., LTD](https://appshunter.io/developer/1501299991) | [辽宁尔雅网信科技有限公司](https://appshunter.io/developer/1420315438) |

## What reviewers say

### TROMOX

[App page](https://appshunter.io/ios/app/tromox/id6446191527)

This app allows users to remotely monitor their electric vehicles. It provides real-time data on battery status, location, and riding history. Users can also manage their vehicles and adjust app settings.

**Highlights:** One-button self-inspection, Real-time vehicle location, Battery capacity monitoring, Riding track history, Service point locator, Vehicle management

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


### KeyPay

[App page](https://appshunter.io/ios/app/keypay/id6757599844)

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Maps service in 1 month | $3.00 | one-time |
| Maps Service 1 month | $4.00 | one-time |
| Navigation service in 3 months | $7.00 | one-time |
| Maps Service 3 months | $8.00 | one-time |
| 6 months Google Maps service | $12.00 | one-time |
| Navigation service in 6 months | $12.00 | one-time |
| Maps Service 6 months | $14.00 | one-time |
| 12 months Google Maps service | $21.00 | one-time |
| Navigation service in 12 months | $21.00 | one-time |
| Maps Service 12 months | $24.00 | one-time |


## Frequently asked questions

### Is TROMOX free?

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

### Is KeyPay free?

KeyPay is free to download, with in-app purchases available.

### Do TROMOX or KeyPay have ads?

Neither TROMOX nor KeyPay shows ads.

### Which is updated more often, TROMOX or KeyPay?

TROMOX ships an update every 3 months, and KeyPay every 2 months. Most recently, TROMOX was updated on November 3, 2026 and KeyPay on November 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.*