# J1939OBD vs SoluDyne

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

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

J1939OBD ships an update every 41 months, SoluDyne every 2 weeks. The most recent releases landed on September 18, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | J1939OBD | SoluDyne |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 41 months | **Every 2 weeks** |
| Size | 14 MB | 121 MB |
| Requires iOS | 12.1 | **11.1** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [S.Koepge](https://appshunter.io/developer/340731168) | [SoluDyne](https://appshunter.io/developer/1376604682) |

## 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 |


### SoluDyne

[App page](https://appshunter.io/ios/app/soludyne/id1481579494)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is J1939OBD free?

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

### Is SoluDyne free?

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

### Do J1939OBD or SoluDyne have ads?

Neither J1939OBD nor SoluDyne shows ads.

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

J1939OBD ships an update every 41 months, and SoluDyne every 2 weeks. Most recently, J1939OBD was updated on September 18, 2026 and SoluDyne on October 6, 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.*