# OBDify Car Diagnostic vs TayScan

The clearest difference is in-app purchases: TayScan at none against OBDify Car Diagnostic's 6. TayScan also leads on ads (none vs shown). OBDify Car Diagnostic's advantage is update cadence (fortnightly vs monthly) and iOS requirement (15.0 vs 26.5). 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. TayScan asks for nothing beyond the download.

OBDify Car Diagnostic ships an update fortnightly, TayScan monthly. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | OBDify Car Diagnostic | TayScan |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Fortnightly** | Monthly |
| Size | 64 MB | 9 MB |
| Requires iOS | **15.0** | 26.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [OBDify](https://appshunter.io/developer/1689565023) | [Niels Hollatz](https://appshunter.io/developer/6778678853) |

## 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 |


### TayScan

[App page](https://appshunter.io/ios/app/tayscan/id6798300346)

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

**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 TayScan free?

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

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

OBDify Car Diagnostic shows ads; TayScan does not.

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

OBDify Car Diagnostic ships an update fortnightly, and TayScan monthly. Most recently, OBDify Car Diagnostic was updated on November 5, 2026 and TayScan on October 31, 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.*