# eRacingBattery vs CDI

eRacingBattery and CDI are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

eRacingBattery ships an update every 6 weeks, CDI every 2 months. The most recent releases landed on October 10, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | eRacingBattery | CDI |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 2 months |
| Size | 18 MB | 29 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [ARACER SPEEDTEK INC.](https://appshunter.io/developer/1218691866) | [ECU=SHOP](https://appshunter.io/developer/1389703440) |

## What reviewers say

### eRacingBattery

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

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

**In-app purchases:** none


### CDI

[App page](https://appshunter.io/ios/app/cdi-ecushop/id6742674804)

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

**In-app purchases:** none


## Frequently asked questions

### Is eRacingBattery free?

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

### Is CDI free?

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

### Do eRacingBattery or CDI have ads?

Neither eRacingBattery nor CDI shows ads.

### Which is updated more often, eRacingBattery or CDI?

eRacingBattery ships an update every 6 weeks, and CDI every 2 months. Most recently, eRacingBattery was updated on October 10, 2026 and CDI on October 16, 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.*