# OBDify Car Diagnostic vs Decode

The clearest difference is in-app purchases: Decode at none against OBDify Car Diagnostic's 6. Decode also leads on ads (none vs shown) and update cadence (every 2 days vs fortnightly). OBDify Car Diagnostic's advantage is iOS requirement (15.0 vs 26.2). On price and device support there is nothing between them.

Both are free to download. OBDify Car Diagnostic sells 6 in-app purchases, starting at $4.99 per month. Decode asks for nothing beyond the download.

OBDify Car Diagnostic ships an update fortnightly, Decode every 2 days. The most recent releases landed on October 6, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | OBDify Car Diagnostic | Decode |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Fortnightly | **Every 2 days** |
| Size | 64 MB | 1 MB |
| Requires iOS | **15.0** | 26.2 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [OBDify](https://appshunter.io/developer/1689565023) | [TENILLE MOSS](https://appshunter.io/developer/1880822353) |

## What reviewers say

### 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 |


### Decode

[App page](https://appshunter.io/ios/app/decode-her/id6759811710)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is OBDify Car Diagnostic free?

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

### Is Decode free?

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

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

OBDify Car Diagnostic shows ads; Decode does not.

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

OBDify Car Diagnostic ships an update fortnightly, and Decode every 2 days. Most recently, OBDify Car Diagnostic was updated on October 6, 2026 and Decode on October 4, 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.*