# Regex for Safari vs SecondBrain Pro

The clearest difference is price: SecondBrain Pro at Free against Regex for Safari's $0.99. SecondBrain Pro also leads on update cadence (every 2 months vs every 5 months). Regex for Safari's advantage is in-app purchases (none vs 2) and device support (4 vs 2). On ads there is nothing between them.

SecondBrain Pro is free to download; Regex for Safari costs $0.99 up front. SecondBrain Pro sells 2 one-off in-app purchases. Regex for Safari asks for nothing beyond the download.

Regex for Safari ships an update every 5 months, SecondBrain Pro every 2 months. The most recent releases landed on October 4, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Regex for Safari | SecondBrain Pro |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 2 months** |
| Monetization | Paid | — |
| Size | 2 MB | 10 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [磊 高](https://appshunter.io/developer/1597577318) | [Heinrich Krupp](https://appshunter.io/developer/1866842398) |

## What reviewers say

### Regex for Safari

[App page](https://appshunter.io/ios/app/regex-for-safari/id1597580456)

Instantly highlight matching text on web pages as you type. It offers real-time regex validation and keyboard shortcuts for navigation. Save your expressions locally and customize the highlight color for a personalized experience.

**Highlights:** Instant text highlighting, Real-time regex validation, Copy matched text, Keyboard shortcuts, Saved regex expressions, Customizable highlight color

**Features:** Safari Extension, Vision Pro support

**In-app purchases:** none


### SecondBrain Pro

[App page](https://appshunter.io/ios/app/secondbrain-pro/id6757423935)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Standard | $7.99 | one-time |
| SecondBrain PREMIUM | $17.99 | one-time |


## Frequently asked questions

### Is Regex for Safari free?

Regex for Safari costs $0.99, with no in-app purchases.

### Is SecondBrain Pro free?

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

### Do Regex for Safari or SecondBrain Pro have ads?

Neither Regex for Safari nor SecondBrain Pro shows ads.

### Which is updated more often, Regex for Safari or SecondBrain Pro?

Regex for Safari ships an update every 5 months, and SecondBrain Pro every 2 months. Most recently, Regex for Safari was updated on October 4, 2026 and SecondBrain Pro on October 10, 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.*