# PairMyKey vs builDx

The clearest difference is update cadence: builDx at every 3 days against PairMyKey's weekly. On price, ads, in-app purchases and device support there is nothing between them.

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

PairMyKey ships an update weekly, builDx every 3 days. The most recent releases landed on November 7, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | PairMyKey | builDx |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (1.3K ratings)](https://appshunter.io/ios/app/pairmykey/id1643530684/reviews)** | — |
| Number of ratings | **1.3K** | — |
| Positive reviews | 53.9% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Weekly | **Every 3 days** |
| Monetization | Free | — |
| Size | 187 MB | 34 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [THE SOCIAL PLUS HOLDING LLC](https://appshunter.io/developer/1643530686) | [Soft Crunch](https://appshunter.io/developer/1751250568) |

## What reviewers say

### PairMyKey

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

This application simplifies the process of programming vehicle keys and remotes. It works in conjunction with a dongle to allow users to program their own car keys, saving time and money on dealership services.

**Highlights:** Program vehicle keys, Program car remotes, Works with OBDII port dongle, Save on dealership costs, User-friendly interface

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

**In-app purchases:** none


### builDx

[App page](https://appshunter.io/ios/app/buildx-construction-reporter/id6764043459)

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

**In-app purchases:** none


## Frequently asked questions

### Is PairMyKey free?

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

### Is builDx free?

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

### Do PairMyKey or builDx have ads?

Neither PairMyKey nor builDx shows ads.

### Which is updated more often, PairMyKey or builDx?

PairMyKey ships an update weekly, and builDx every 3 days. Most recently, PairMyKey was updated on November 7, 2026 and builDx on October 31, 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.*