# IDFA Checker byNSDev vs RegExpress

The clearest difference is review sentiment: IDFA Checker byNSDev at 100% against RegExpress's 0%. IDFA Checker byNSDev also leads on in-app purchases (none vs 4). RegExpress's advantage is ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. RegExpress sells 4 one-off in-app purchases. IDFA Checker byNSDev asks for nothing beyond the download.

## The numbers

| Metric | IDFA Checker byNSDev | RegExpress |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | **100.0% of reviews** | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | — | Every 3 weeks |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 3 MB | 8 MB |
| Requires iOS | **15.6** | 16.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [NIHON SYSTEM DEVELOPER CORPORATION](https://appshunter.io/developer/1198103734) | [Nevv Atlantis LLC](https://appshunter.io/developer/1785977795) |

## What reviewers say

### IDFA Checker byNSDev

[App page](https://appshunter.io/ios/app/idfa-checker-bynsdev/id6740688373)

Easily view and copy your device's Identifier for Advertisers (IDFA). This tool is useful for developers registering test devices for advertising platforms like AdMob.

**Highlights:** View IDFA, Copy IDFA to clipboard, Share IDFA, Test device registration aid, AdMob integration support

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

**In-app purchases:** none


### RegExpress

[App page](https://appshunter.io/ios/app/regexpress/id6745237099)

This app is a comprehensive tool for building, testing, and debugging regular expressions. It offers real-time matching, syntax highlighting, and supports multiple regex flavors. Learn and practice with tutorials, puzzles, and challenges.

**Highlights:** Real-time regex matching, Support for 5 regex flavors, Step-by-step regex debugger, Pattern Library for saving patterns, Learning tutorials and daily puzzles, iCloud sync for Pro users, Universal app for iOS and Mac

**Features:** Family Sharing

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Tip $1 | $0.99 | one-time |
| Tip3 | $2.99 | one-time |
| RegExpress Pro | $4.99 | one-time |
| Tip5 | $4.99 | one-time |


## Frequently asked questions

### Is IDFA Checker byNSDev free?

IDFA Checker byNSDev is free to download, with no in-app purchases.

### Is RegExpress free?

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

### Do IDFA Checker byNSDev or RegExpress have ads?

IDFA Checker byNSDev shows ads; RegExpress does not.

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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.*