# BT1 vs OBD JScan

The clearest difference is rating: OBD JScan at 4.7 against BT1's 2.4. OBD JScan also leads on review sentiment (80% vs 48%) and update cadence (every 3 weeks vs every 4 months). BT1's advantage is in-app purchases (none vs 8) and iOS requirement (10.0 vs 13.0). On price, ads and device support there is nothing between them.

Both are free to download. OBD JScan sells 7 one-off in-app purchases. BT1 asks for nothing beyond the download.

OBD JScan holds the better App Store score, 4.7 against 2.4. That said, the two scores are not equally well evidenced: OBD JScan has 1.3K ratings behind it against 14, so its average is the more settled of the two. Written reviews point the same way: 48% of BT1's written reviews are positive against 80% of OBD JScan's.

BT1 ships an update every 4 months, OBD JScan every 3 weeks. The most recent releases landed on October 13, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | BT1 | OBD JScan |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.4 (14 ratings)](https://appshunter.io/ios/app/bt1/id471892883/reviews) | **[4.7 (1.3K ratings)](https://appshunter.io/ios/app/obd-jscan/id1445903514/reviews)** |
| Number of ratings | 14 | **1.3K** |
| Positive reviews | 47.7% of reviews | **79.6% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 3 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 5 MB | 403 MB |
| Requires iOS | **10.0** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [GoPoint Technology, Inc](https://appshunter.io/developer/351684882) | [Piotr Bialic](https://appshunter.io/developer/960266498) |

## What reviewers say

### BT1

[App page](https://appshunter.io/ios/app/bt1/id471892883)

Decode your vehicle's Check Engine Light and check for recalls or service bulletins. Connect a compatible scanner to your device to gain insights into your car's health and avoid unexpected issues.

**Highlights:** Decode Check Engine Light, Check for vehicle recalls, Check for Special Service Bulletins, Connects via Bluetooth or cable scanner, Pairs with iPhone, iPod touch, or iPad

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to use
- 👍 Works as advertised (sometimes)
- 👍 Good hardware
- 👍 Cool technology
- 👍 Great for basic diagnostics

**What reviewers complain about**

- 🐛 Crashes frequently
- 🐛 Incompatible with newer iOS versions
- 🐛 Does not detect fault codes accurately
- 🐛 Limited functionality
- 🐛 Outdated software

**Reported bugs**

- App crashes when scanning vehicle
- App crashes after 30 seconds
- App not working anymore
- Cannot select make/model
- App not updated for newer vehicles

**Requested features**

- Update app for newer iOS versions
- Add more vehicle makes/models
- Improve fault code detection
- Add live data stream
- Firmware update for Bluetooth device


### OBD JScan

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

This app provides advanced diagnostics for Jeep, Chrysler, and Dodge vehicles. It allows users to read and clear trouble codes, view live sensor data, and access settings across all vehicle modules, including ABS and transmission.

**Highlights:** Read/Clear Diagnostic Trouble Codes, Access Live Data from all sensors, View vehicle settings, Access all vehicle modules (ABS, Transmission, etc.), Identify module, VIN, Part Number, and Version, Share vehicle trouble codes

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| + 1 garage license | $9.99 | one-time |
| 1 VIN license | $20.99 | one-time |
| Add 1 VIN | $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 BT1 free?

BT1 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, BT1 or OBD JScan?

OBD JScan is rated higher. BT1 averages 2.4 out of 5 from 14 ratings, while OBD JScan averages 4.7 from 1.3K ratings.

### Do BT1 or OBD JScan have ads?

Neither BT1 nor OBD JScan shows ads.

### Which is updated more often, BT1 or OBD JScan?

BT1 ships an update every 4 months, and OBD JScan every 3 weeks. Most recently, BT1 was updated on October 13, 2026 and OBD JScan on October 16, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*