# Carista OBD2 vs RaceChip+

The clearest difference is rating: Carista OBD2 at 4.6 against RaceChip+'s 3.1. Carista OBD2 also leads on ratings volume (4.2K vs 81) and update cadence (every 3 weeks vs every 2 months). RaceChip+'s advantage is in-app purchases (none vs 14) and ads (none vs shown). On price, review sentiment, device support and iOS requirement there is nothing between them.

Both are free to download. Carista OBD2 sells 6 in-app purchases, starting at $19.99 per month. RaceChip+ asks for nothing beyond the download.

Carista OBD2 holds the better App Store score, 4.6 against 3.1. That said, the two scores are not equally well evidenced: Carista OBD2 has 4.2K ratings behind it against 81, so its average is the more settled of the two. Written reviews complicate that: 34% of Carista OBD2's written reviews are positive against 38% of RaceChip+'s, so the app with the better star average is not the one people write more warmly about.

Carista OBD2 ships an update every 3 weeks, RaceChip+ every 2 months. The most recent releases landed on October 20, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | Carista OBD2 | RaceChip+ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (4.2K ratings)](https://appshunter.io/ios/app/carista-obd2/id954363569/reviews)** | [3.1 (81 ratings)](https://appshunter.io/ios/app/racechip-plus/id1450806314/reviews) |
| Number of ratings | **4.2K** | 81 |
| Positive reviews | 34.2% of reviews | **38.5% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Monetization | Free with in-app purchases | **Free** |
| Best chart rank | **#164** | — |
| Size | 142 MB | 100 MB |
| Requires iOS | 16.4 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Prizmos](https://appshunter.io/developer/954363568) | [RaceChip](https://appshunter.io/developer/989102959) |

## What reviewers say

### Carista OBD2

[App page](https://appshunter.io/ios/app/carista-obd2/id954363569)

**Currently charting:** #164 Top Grossing · Utilities (US App Store)

This app acts as a DIY car mechanic, allowing you to customize features, diagnose warning lights, monitor live data, and perform maintenance. Save time and money by handling common car tasks yourself.

**Highlights:** Customize car behavior and unlock hidden features, Diagnose and reset dashboard warning lights, Monitor real-time vehicle parameters, Perform simple DIY car maintenance procedures, Access advanced electronic diagnostics

**Features:** Vision Pro support

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Basic | $19.99 | per month |
| Pro | $19.99 | per month |
| 1 month Pro | $19.99 | per month |
| 3 month Pro | $29.99 | per 3 months |
| Pro | $59.99 | per year |
| One-Time Diagnostic & Reset | $9.99 | one-time |

**What reviewers like**

- 🚀 Easy to use
- 👍 Customization options
- 🚀 Efficient diagnostics
- 💡 Helpful for maintenance
- 👍 Great customer support

**What reviewers complain about**

- 💰 Expensive subscription
- 🔒 Requires account login
- 🐛 Connectivity issues
- 🔒 Locked features behind paywall
- 🐛 Unreliable functionality

**Reported bugs**

- App crashes and freezes
- Subscription issues and billing problems
- Incompatibility with certain OBD2 adapters
- Customization features not working as expected
- Inaccurate fault code detection

**Requested features**

- Support for more vehicle makes and models
- Offline diagnostics and customization
- Ability to save customization settings
- More detailed error code information
- Improved user interface and navigation


### RaceChip+

[App page](https://appshunter.io/ios/app/racechip-plus/id1450806314)

Control chip tuning and throttle tuning for your car with this app. Fine-tune settings to match your car's specifics and driving style, with easy access to Eco, Sport, and Race modes. Experience enhanced performance with RaceChip tuning chips.

**Highlights:** Chip tuning control, Throttle tuning control, Customizable driving modes (Eco, Sport, Race), Real-time software updates, Product support

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

**In-app purchases:** none


## Frequently asked questions

### Is Carista OBD2 free?

Carista OBD2 is free to download, with in-app purchases available.

### Is RaceChip+ free?

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

### Which has better reviews, Carista OBD2 or RaceChip+?

Carista OBD2 is rated higher. Carista OBD2 averages 4.6 out of 5 from 4.2K ratings, while RaceChip+ averages 3.1 from 81 ratings.

### Do Carista OBD2 or RaceChip+ have ads?

Carista OBD2 shows ads; RaceChip+ does not.

### Which is updated more often, Carista OBD2 or RaceChip+?

Carista OBD2 ships an update every 3 weeks, and RaceChip+ every 2 months. Most recently, Carista OBD2 was updated on October 20, 2026 and RaceChip+ on October 17, 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.*