Comparison

RegEx+ vs Qassay

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

RegEx+

This tool helps developers master regular expressions on macOS and iOS. It offers a comprehensive cheatsheet and cloud synchronization across devices to decode and construct complex text patterns.

Highlights
  • Master regular expressions
  • Comprehensive cheatsheet
  • Cloud synchronization
  • Cross-device support (macOS, iOS)
  • Decode complex patterns
Features
Read full description

Visualize, test, and master regular expressions with RegEx+. RegEx+ is a focused regex toolkit for developers on iPhone, iPad, and Mac. Build and test patterns live, then instantly see how they work with interactive flow diagrams — a visual breakdown of every part of your regex. KEY FEATURES • Flow Diagrams — See your regex as a diagram. Instantly understand how each token, group, and quantifier connects. • Live Matching — Results update as you type. Match, capture, and replace in real time. • Cheat Sheet — A comprehensive reference for metacharacters, anchors, groups, and operators. Always one tap away. • Pattern Library — Save and organize your patterns, or start faster with 33 built-in templates. Sync across all your devices via CloudKit. • Multi-language Support — Available in English, French, German, Spanish, Italian, Japanese, Korean, Dutch, Polish, Chinese, Danish, Finnish, and Norwegian. Whether you're debugging a complex pattern or learning regex from scratch, RegEx+ gives you the tools to understand what your expression actually does. Download RegEx+ and start writing better regex today.

About

Qassay

Features
Read full description

Qassay is an in vitro digital diagnostic platform. You can easily test your patients by downloading this app and using it together with our Qassay Lateral Flow Reader. Test your patients for vitamin D, fertility hormones, cardiovascular disease, diabetes, and much more! Visit our website for more information at www.qassay.com

Screenshots

RegEx+4 screens
Qassay1 screens

Verdict

The call

The clearest difference is price: Qassay at Free against RegEx+'s $1.99. Qassay also leads on iOS requirement (15.6 vs 26.0). RegEx+'s advantage is chart position (#102 vs unranked). On update cadence, ads, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Qassay is free to download; RegEx+ costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

RegEx+ ships an update every 4 weeks, Qassay every 3 weeks. The most recent releases landed on October 1, 2026 and September 22, 2026 respectively.

Scorecard3 real differences · 8 level
RegEx+ versus Qassay: the parameters behind the verdict, then further details
ParameterRegEx+Qassay
Price$1.99Free — better
Rating4.2 (5 ratings) — better—
Positive reviews50.0% of reviews—
Number of ratings5 — better—
Update frequencyEvery 4 weeksEvery 3 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
Best chart rank#102 — better—
DevicesiPhone, iPad, Mac — betteriPhone, iPod
Requires iOS26.015.6 — better
Further details — not scored
Size5 MB49 MB
Age rating4+4+
Developer圣罡 汤P4Q Health S.L.U.

In-app purchases

None

RegEx+

No in-app purchases

None

Qassay

No in-app purchases

Questions

Is RegEx+ free?
RegEx+ costs $1.99, with no in-app purchases.
Is Qassay free?
Qassay is free to download, with no in-app purchases.
Do RegEx+ or Qassay have ads?
Neither RegEx+ nor Qassay shows ads.
Which is updated more often, RegEx+ or Qassay?
RegEx+ ships an update every 4 weeks, and Qassay every 3 weeks. Most recently, RegEx+ was updated on October 1, 2026 and Qassay on September 22, 2026.

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