# KOSO Magic vs eRacingBattery

The clearest difference is in-app purchases: eRacingBattery at none against KOSO Magic's 4. eRacingBattery also leads on iOS requirement (12.0 vs 15.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. KOSO Magic sells 4 one-off in-app purchases. eRacingBattery asks for nothing beyond the download.

KOSO Magic ships an update every 3 weeks, eRacingBattery every 6 weeks. The most recent releases landed on September 16, 2026 and September 12, 2026 respectively.

## The numbers

| Metric | KOSO Magic | eRacingBattery |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 6 weeks |
| Size | 110 MB | 18 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Tong Yah Electronic Technology Co., Ltd.](https://appshunter.io/developer/1050103913) | [ARACER SPEEDTEK INC.](https://appshunter.io/developer/1218691866) |

## What reviewers say

### KOSO Magic

[App page](https://appshunter.io/ios/app/koso-magic/id6444849232)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 30 KOSO COINS | $0.99 | one-time |
| 60 KOSO COINS | $1.99 | one-time |
| 120 KOSO COINS | $3.99 | one-time |
| 240 KOSO COINS | $6.99 | one-time |


### eRacingBattery

[App page](https://appshunter.io/ios/app/eracingbattery/id6447655920)

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

**In-app purchases:** none


## Frequently asked questions

### Is KOSO Magic free?

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

### Is eRacingBattery free?

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

### Do KOSO Magic or eRacingBattery have ads?

Neither KOSO Magic nor eRacingBattery shows ads.

### Which is updated more often, KOSO Magic or eRacingBattery?

KOSO Magic ships an update every 3 weeks, and eRacingBattery every 6 weeks. Most recently, KOSO Magic was updated on September 16, 2026 and eRacingBattery on September 12, 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.*