# CarKeep vs Tachwire

The clearest difference is in-app purchases: Tachwire at none against CarKeep's 2. Tachwire also leads on ads (none vs shown) and update cadence (every 3 days vs every 3 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. CarKeep sells 2 in-app purchases, starting at $0.99 per 7 days. Tachwire asks for nothing beyond the download.

CarKeep ships an update every 3 months, Tachwire every 3 days. The most recent releases landed on October 30, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | CarKeep | Tachwire |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/tachwire/id6813896115/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | **Every 3 days** |
| Monetization | — | Free |
| Size | 6 MB | 167 MB |
| Requires iOS | **17.0** | 18.4 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Ryo Tsudukihashi](https://appshunter.io/developer/1320583602) | [Maksim Pogozhii](https://appshunter.io/developer/1877182235) |

## What reviewers say

### CarKeep

[App page](https://appshunter.io/ios/app/carkeep-car-maintenance/id6785027821)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Premium | $0.99 | per 7 days |
| Lifetime Premium | $19.99 | one-time |


### Tachwire

[App page](https://appshunter.io/ios/app/tachwire/id6813896115)

This app displays real-time car data like oil and gearbox temperatures, boost, and gear on your phone's screen. It provides spoken warnings for critical conditions and offers detailed insights for BMWs and other supported vehicles. It also includes road camera alerts and drive recording features.

**Highlights:** Live OBD data display, Customizable tiles on car screen, Spoken warnings for critical conditions, Detailed BMW diagnostics, Road camera alerts, Drive recording and analysis, Track lap timing

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

**In-app purchases:** none


## Frequently asked questions

### Is CarKeep free?

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

### Is Tachwire free?

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

### Do CarKeep or Tachwire have ads?

CarKeep shows ads; Tachwire does not.

### Which is updated more often, CarKeep or Tachwire?

CarKeep ships an update every 3 months, and Tachwire every 3 days. Most recently, CarKeep was updated on October 30, 2026 and Tachwire on October 26, 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.*