# FORScan Viewer vs OBD JScan

The clearest difference is review sentiment: OBD JScan at 80% against FORScan Viewer's 32%. OBD JScan also leads on rating (4.7 vs 2.7) and update cadence (every 3 weeks vs every 3 months). FORScan Viewer's advantage is in-app purchases (none vs 7) and iOS requirement (9.0 vs 13.0). On price, ads and device support there is nothing between them.

Both are free to download. OBD JScan sells 6 one-off in-app purchases. FORScan Viewer asks for nothing beyond the download.

OBD JScan holds the better App Store score, 4.7 against 2.7. That said, the two scores are not equally well evidenced: OBD JScan has 1.3K ratings behind it against 105, so its average is the more settled of the two. Written reviews point the same way: 32% of FORScan Viewer's written reviews are positive against 80% of OBD JScan's.

FORScan Viewer ships an update every 3 months, OBD JScan every 3 weeks. The most recent releases landed on October 24, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | FORScan Viewer | OBD JScan |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.7 (105 ratings)](https://appshunter.io/ios/app/forscan-viewer/id1344642568/reviews) | **[4.7 (1.3K ratings)](https://appshunter.io/ios/app/obd-jscan/id1445903514/reviews)** |
| Number of ratings | 105 | **1.3K** |
| Positive reviews | 31.6% of reviews | **79.6% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 80 MB | 403 MB |
| Requires iOS | **9.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Aleksei Savin](https://appshunter.io/developer/892347086) | [Piotr Bialic](https://appshunter.io/developer/960266498) |

## What reviewers say

### FORScan Viewer

[App page](https://appshunter.io/ios/app/forscan-viewer/id1344642568)

This application allows users to read and view information about the on-board network of Ford, Mazda, Lincoln, and Mercury vehicles. It supports various OBD adapters and displays diagnostic trouble codes for all modules.

**Highlights:** Read vehicle on-board network configuration, View Diagnostic Trouble Codes (DTC), Supports Ford, Mazda, Lincoln, Mercury vehicles, Compatible with OBDLink MX+, vLinker adapters, Displays module information

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 🚀 Comprehensive real-time sensor monitoring and data recording
- 📊 Detailed error code viewing and analysis capabilities
- ⚙️ Extensive vehicle customization and performance settings
- ✅ Works excellently with quality OBD2 adapters
- 🔧 Superior diagnostics compared to competing apps

**What reviewers complain about**

- 🐛 Frequent Bluetooth connectivity failures
- 🐛 WiFi connection issues and instability
- ❌ Incompatible with many popular OBD2 adapters
- 📱 iOS version severely limited compared to Windows
- ⚠️ Error codes fail to clear properly

**Reported bugs**

- App fails to detect OBD2 adapters despite successful pairing
- Bluetooth connection drops and fails to reconnect
- WiFi adapter detection not working after updates
- Error code clearing functionality non-functional
- Vehicle identification fails on certain models

**Requested features**

- Bluetooth Low Energy (BLE) adapter support
- Full feature parity between iOS and Windows versions
- Turkish language support
- Improved UI scaling for modern iPhones
- Expanded vehicle compatibility


### OBD JScan

[App page](https://appshunter.io/ios/app/obd-jscan/id1445903514)

This diagnostic application provides in-depth access to vehicle modules, allowing users to read and clear trouble codes, view live sensor data, and access vehicle settings. It supports a wide range of Jeep, Chrysler, and Dodge models, offering powerful customization and diagnostic features.

**Highlights:** Read and clear diagnostic trouble codes, Access live data from all vehicle sensors, View vehicle settings and module information, Supports ABS, transmission, and other modules, Wide compatibility with Jeep, Chrysler, Dodge, Enables features locked by dealers

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| + 1 garage license | $9.99 | one-time |
| 1 VIN license | $20.99 | one-time |
| Add 1 VIN Vehicle Slot | $20.99 | one-time |
| 3 VIN licenses | $54.99 | one-time |
| 5 VIN Licenses | $84.99 | one-time |
| 10 VIN Licenses | $149.99 | one-time |

**What reviewers like**

- 🚀 Easy to use
- 🔧 Powerful customization options
- 👍 Excellent customer support
- 💡 Useful diagnostic and monitoring features
- 🔓 Enables features otherwise locked by dealer

**What reviewers complain about**

- 🐛 Occasional connectivity issues
- 🔌 Requires additional hardware purchase
- ⚠️ Compatibility issues with newer vehicle models
- 🕰️ Slow performance in certain scenarios

**Reported bugs**

- Inability to save/export diagnostic data
- Inconsistent behavior when changing vehicle settings

**Requested features**

- Expanded vehicle compatibility
- Improved stability and reliability
- Enhanced user interface and guidance
- Integration with other vehicle apps/services


## Frequently asked questions

### Is FORScan Viewer free?

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

### Is OBD JScan free?

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

### Which has better reviews, FORScan Viewer or OBD JScan?

OBD JScan is rated higher. FORScan Viewer averages 2.7 out of 5 from 105 ratings, while OBD JScan averages 4.7 from 1.3K ratings.

### Do FORScan Viewer or OBD JScan have ads?

Neither FORScan Viewer nor OBD JScan shows ads.

### Which is updated more often, FORScan Viewer or OBD JScan?

FORScan Viewer ships an update every 3 months, and OBD JScan every 3 weeks. Most recently, FORScan Viewer was updated on October 24, 2026 and OBD JScan on October 29, 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.*