# J1939OBD vs DSH

The clearest difference is in-app purchases: DSH at none against J1939OBD's 1. DSH also leads on update cadence (every 2 weeks vs every 41 months) and iOS requirement (8.0 vs 12.1). On price, ads and device support there is nothing between them.

Both are free to download. J1939OBD sells 1 one-off in-app purchase. DSH asks for nothing beyond the download.

J1939OBD ships an update every 41 months, DSH every 2 weeks. The most recent releases landed on September 18, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | J1939OBD | DSH |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 41 months | **Every 2 weeks** |
| Monetization | — | Free |
| Size | 14 MB | 35 MB |
| Requires iOS | 12.1 | **8.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [S.Koepge](https://appshunter.io/developer/340731168) | [Directed Electronics Australia](https://appshunter.io/developer/1083778713) |

## What reviewers say

### J1939OBD

[App page](https://appshunter.io/ios/app/j1939obd/id1453435912)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Get full access for 1939OBD | $3.99 | one-time |


### DSH

[App page](https://appshunter.io/ios/app/dsh-922/id1461998494)

This app connects to dash cameras via Wi-Fi, allowing users to capture photos, manage recorded files, and adjust camera settings directly from their smartphone. Users can also easily share their driving moments on social media.

**Highlights:** Wi-Fi camera connection, Photo capture, File management, Settings adjustment, Social media sharing

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is J1939OBD free?

J1939OBD is free to download, with in-app purchases available.

### Is DSH free?

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

### Do J1939OBD or DSH have ads?

Neither J1939OBD nor DSH shows ads.

### Which is updated more often, J1939OBD or DSH?

J1939OBD ships an update every 41 months, and DSH every 2 weeks. Most recently, J1939OBD was updated on September 18, 2026 and DSH on October 20, 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.*