# OBD Compass vs OBD Vault

The clearest difference is in-app purchases: OBD Compass at none against OBD Vault's 9. OBD Compass also leads on iOS requirement (13.0 vs 15.0). OBD Vault's advantage is update cadence (weekly vs monthly). On price, ads and device support there is nothing between them.

Both are free to download. OBD Vault sells 9 in-app purchases, starting at $2.99 per month. OBD Compass asks for nothing beyond the download.

OBD Compass ships an update monthly, OBD Vault weekly. Both last shipped on October 31, 2026.

## The numbers

| Metric | OBD Compass | OBD Vault |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Weekly** |
| Size | 25 MB | 41 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [HK TOPDON TECHNOLOGY Co., LIMITED](https://appshunter.io/developer/1846276192) | [Bahdan Hal](https://appshunter.io/developer/6808813418) |

## What reviewers say

### OBD Compass

[App page](https://appshunter.io/ios/app/obd-compass/id6758076036)

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

**In-app purchases:** none


### OBD Vault

[App page](https://appshunter.io/ios/app/obd-vault/id6808813416)

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

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 vehicle · Per month | $2.99 | per month |
| 3 vehicles · Per month | $5.99 | per month |
| 10 vehicles · Per month | $14.95 | per month |
| 1 vehicle · Per year | $17.99 | per year |
| 3 vehicles · Per year | $35.99 | per year |
| 10 vehicles · Per year | $89.99 | per year |
| 1 vehicle · Lifetime | $34.99 | one-time |
| 3 vehicles · Lifetime | $69.99 | one-time |
| 10 vehicles · Lifetime | $174.99 | one-time |


## Frequently asked questions

### Is OBD Compass free?

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

### Is OBD Vault free?

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

### Do OBD Compass or OBD Vault have ads?

Neither OBD Compass nor OBD Vault shows ads.

### Which is updated more often, OBD Compass or OBD Vault?

OBD Compass ships an update monthly, and OBD Vault weekly. Most recently, OBD Compass was updated on October 31, 2026 and OBD Vault 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.*