# Steer vs OBDify Car Diagnostic

The clearest difference is ads: Steer at none against OBDify Car Diagnostic's shown. OBDify Car Diagnostic's advantage is iOS requirement (15.0 vs 26.1). On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. Steer sells 4 in-app purchases, starting at $9.99 per month and OBDify Car Diagnostic sells 6 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

Steer ships an update every 3 weeks, OBDify Car Diagnostic fortnightly. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Steer | OBDify Car Diagnostic |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 26.7% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 weeks | **Fortnightly** |
| Monetization | Freemium | — |
| Size | 27 MB | 64 MB |
| Requires iOS | 26.1 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Smarters Engineered](https://appshunter.io/developer/1821193944) | [OBDify](https://appshunter.io/developer/1689565023) |

## What reviewers say

### Steer

[App page](https://appshunter.io/ios/app/steer-obd2-car-scanner/id6461049378)

Transform your smartphone into a powerful OBD2 diagnostic tool. Read and clear fault codes, monitor real-time performance metrics, and test your vehicle's acceleration and emissions. Compatible with a wide range of car brands and OBD2 scanners.

**Highlights:** Universal OBD2 scanner compatibility, Read and erase fault codes, Real-time performance metrics, Acceleration and performance testing, Emission compliance checks, Supports various car brands

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| OBD2 Pro | $9.99 | per month |
| OBD2 Pro | $19.99 | per year |
| Steer Plus | $99.00 | per year |
| Steer Plus | $99.00 | per year |


### OBDify Car Diagnostic

[App page](https://appshunter.io/ios/app/obdify-car-diagnostic/id6754986520)

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| OBDify Premium (Monthly) | $4.99 | per month |
| OBDify Premium (Annual) | $47.99 | per year |
| Unlock 1 VIN | $19.99 | one-time |
| Unlock 3 VINs | $49.99 | one-time |
| Unlock 10 VINs | $119.99 | one-time |
| Unlock 25 VINs | $199.99 | one-time |


## Frequently asked questions

### Is Steer free?

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

### Is OBDify Car Diagnostic free?

OBDify Car Diagnostic is free to download, with in-app purchases available.

### Do Steer or OBDify Car Diagnostic have ads?

OBDify Car Diagnostic shows ads; Steer does not.

### Which is updated more often, Steer or OBDify Car Diagnostic?

Steer ships an update every 3 weeks, and OBDify Car Diagnostic fortnightly. Most recently, Steer was updated on November 3, 2026 and OBDify Car Diagnostic on November 5, 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.*