# FORScan Viewer vs PairMyKey

The clearest difference is rating: PairMyKey at 4.7 against FORScan Viewer's 2.7. PairMyKey also leads on update cadence (weekly vs every 3 months) and review sentiment (52% vs 32%). FORScan Viewer's advantage is iOS requirement (9.0 vs 13.0). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

PairMyKey holds the better App Store score, 4.7 against 2.7. That said, the two scores are not equally well evidenced: PairMyKey has 1.2K 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 52% of PairMyKey's.

FORScan Viewer ships an update every 3 months, PairMyKey weekly. The most recent releases landed on October 24, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | FORScan Viewer | PairMyKey |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.7 (105 ratings)](https://appshunter.io/ios/app/forscan-viewer/id1344642568/reviews) | **[4.7 (1.2K ratings)](https://appshunter.io/ios/app/pairmykey/id1643530684/reviews)** |
| Number of ratings | 105 | **1.2K** |
| Positive reviews | 31.6% of reviews | **51.8% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Weekly** |
| Monetization | Free | Free |
| Size | 80 MB | 187 MB |
| Requires iOS | **9.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Aleksei Savin](https://appshunter.io/developer/892347086) | [THE SOCIAL PLUS HOLDING LLC](https://appshunter.io/developer/1643530686) |

## 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


### PairMyKey

[App page](https://appshunter.io/ios/app/pairmykey/id1643530684)

This app simplifies the process of programming vehicle keys and remotes for most cars. It works in conjunction with a dongle, connecting to your vehicle's OBDII port to enable effortless key programming. Save time and money on dealership services.

**Highlights:** Program vehicle keys, Program remotes, OBDII port connection, User-friendly interface, Save time and money

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

**In-app purchases:** none


## Frequently asked questions

### Is FORScan Viewer free?

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

### Is PairMyKey free?

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

### Which has better reviews, FORScan Viewer or PairMyKey?

PairMyKey is rated higher. FORScan Viewer averages 2.7 out of 5 from 105 ratings, while PairMyKey averages 4.7 from 1.2K ratings.

### Do FORScan Viewer or PairMyKey have ads?

Neither FORScan Viewer nor PairMyKey shows ads.

### Which is updated more often, FORScan Viewer or PairMyKey?

FORScan Viewer ships an update every 3 months, and PairMyKey weekly. Most recently, FORScan Viewer was updated on October 24, 2026 and PairMyKey on October 27, 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.*