# Carista OBD2 vs OttoPilot

The clearest difference is rating: Carista OBD2 at 4.6 against OttoPilot's 2.2. Carista OBD2 also leads on ratings volume (4.1K vs 30) and review sentiment (34% vs 17%). OttoPilot's advantage is in-app purchases (none vs 13) and ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. Carista OBD2 sells 5 in-app purchases, starting at $19.99 per month. OttoPilot asks for nothing beyond the download.

Carista OBD2 holds the better App Store score, 4.6 against 2.2. That said, the two scores are not equally well evidenced: Carista OBD2 has 4.1K ratings behind it against 30, so its average is the more settled of the two. Written reviews point the same way: 34% of Carista OBD2's written reviews are positive against 17% of OttoPilot's.

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on September 23, 2026 and September 16, 2026 respectively.

## The numbers

| Metric | Carista OBD2 | OttoPilot |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (4.1K ratings)](https://appshunter.io/ios/app/carista-obd2/id954363569/reviews)** | [2.2 (30 ratings)](https://appshunter.io/ios/app/ottopilot/id6449269013/reviews) |
| Number of ratings | **4.1K** | 30 |
| Positive reviews | **34.2% of reviews** | 16.7% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Monetization | Free with in-app purchases | **Free** |
| Best chart rank | **#194** | — |
| Size | 132 MB | 67 MB |
| Requires iOS | 16.4 | **15.6** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 17+ | 17+ |
| Developer | [Prizmos](https://appshunter.io/developer/954363568) | [Shenzhen Cartizan Technology Co., Ltd.](https://appshunter.io/developer/1434040269) |

## What reviewers say

### Carista OBD2

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

**Currently charting:** #194 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 (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 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


### OttoPilot

[App page](https://appshunter.io/ios/app/ottopilot/id6449269013)

Enhance your driving with this app, offering a new experience through intuitive guidance and feedback. Access product information, after-sales service, and purchase links directly from your device while on the go.

**Highlights:** Intuitive user guidance, Driving feedback, Product introduction, After-sales service, Product purchase link, Product description

**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 OttoPilot free?

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

### Which has better reviews, Carista OBD2 or OttoPilot?

Carista OBD2 is rated higher. Carista OBD2 averages 4.6 out of 5 from 4.1K ratings, while OttoPilot averages 2.2 from 30 ratings.

### Do Carista OBD2 or OttoPilot have ads?

Carista OBD2 shows ads; OttoPilot does not.

### Which is updated more often, Carista OBD2 or OttoPilot?

Carista OBD2 ships an update every 3 weeks, and OttoPilot every 3 weeks. Most recently, Carista OBD2 was updated on September 23, 2026 and OttoPilot on September 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.*