# RegExp vs BITRIX

The clearest difference is in-app purchases: BITRIX at none against RegExp's 1. BITRIX also leads on iOS requirement (13.0 vs 18.1). RegExp's advantage is ads (none vs shown). On price, review sentiment, update cadence and device support there is nothing between them.

Both are free to download. RegExp sells 1 one-off in-app purchase. BITRIX asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 6 months. The most recent releases landed on October 10, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | RegExp | BITRIX |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 6 months | Every 6 months |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 10 MB | 24 MB |
| Requires iOS | 18.1 | **13.0** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Age rating | +4 | 4+ |
| Developer | [Loshadki, LLC](https://appshunter.io/developer/1546140307) | [sosone](https://appshunter.io/developer/1748061632) |

## What reviewers say

### RegExp

[App page](https://appshunter.io/ios/app/regexp/id1546140065)

This tool allows developers to test and explore regular expression patterns across various programming language syntaxes. It offers advanced configuration options and synchronization across devices, making it ideal for learning and building complex patterns.

**Highlights:** Multiple regex engine support, Advanced Swift regex engine, Save and organize regex patterns, iCloud sync across devices, Supports Swift, Objective-C, ECMAScript, and Go regex flavors

**Features:** Family Sharing, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Features | $2.99 | one-time |


### BITRIX

[App page](https://appshunter.io/ios/app/bitrix-bit-calculator/id6749227229)

This app provides a programmer's bit calculator with a neon CRT terminal interface. It allows for visual inspection and manipulation of bit configurations for various integer and float types, with real-time conversion across HEX, DEC, OCT, and BIN values. Supports bitwise operations and multiple bit environments.

**Highlights:** Bit calculation for 8, 16, 32, 64-bit environments, Integer and Float (IEEE 754) type support, Visual bit toggling with real-time updates, AND, OR, XOR, NOT, and Shift operations, Simultaneous BIN, OCT, DEC, HEX display, Neon CRT terminal interface

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

**In-app purchases:** none


## Frequently asked questions

### Is RegExp free?

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

### Is BITRIX free?

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

### Do RegExp or BITRIX have ads?

BITRIX shows ads; RegExp does not.

### Which is updated more often, RegExp or BITRIX?

RegExp ships an update every 6 months, and BITRIX every 6 months. Most recently, RegExp was updated on October 10, 2026 and BITRIX on October 6, 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.*