a8s Regex
Test your regex offline
0 ratings
$2.99
About
Create, test and refine regular expressions on Mac, iPhone, iPad and Apple Vision Pro. a8s Regex highlights matches in your text and helps you understand each result.
TEST AND EXPLORE
• Highlighted matches and detailed capture groups.
• Replacement previews using $1, $2 and subsequent groups.
• Examples for extracting email addresses, parsing logs and reformatting dates.
• Up to 50 positive or negative test cases, saved with your pattern.
KEEP YOUR WORK
Save patterns to history, mark favorites and return to your last session. Export results as JSON or CSV. History stays on each device, with no automatic synchronization.
A PRECISE ENGINE
The app uses NSRegularExpression, Foundation’s ICU engine. Its syntax may differ from JavaScript, PCRE or Python. Positions use UTF-16 units.
ON YOUR DEVICE
Local processing, with no account, advertising or tracking. One-time purchase, no subscription.
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What's New in a8s Regex
1.3.3
September 15, 2026
The interface is available in French, English, Japanese, Simplified and Traditional Chinese, Russian, Italian and Spanish. Large exports are bounded, saving while typing is improved, and matches remain available if replacement fails. Oversized sessions are preserved for recovery. Long option labels can wrap across lines.
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