RegEx Lab vs UDevice
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
RegEx Lab
This app allows users to test and experiment with regular expressions. It offers syntax highlighting, customizable match colors, and a detailed results list. Features include a replace function, dark and light themes, and a helpful cheatsheet for quick reference.
- Regex syntax highlighting
- Match and capture group highlighting
- Customizable highlight colors
- Results list view
- Replace feature
- Dark and light themes
- Regular expression cheatsheet
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RegEx Lab - test regular expressions • Highlighting of regex syntax and of matches and capture groups. • Choose the color of the match highlights • Results List View which lists all the matches and capture groups. • Replace feature • Dark theme (by default) based on the Solarized color palette • Themes to choose from (light/dark) • A handy cheatsheet which tells you about the different operators, option flags and metacharacters. • An extra row of keyboard keys for common special characters • Undo / Redo quick access buttons • Support for Dynamic Type (iOS Settings Text Size) • Export / Import feature Questions, suggestions, issues? regexlab@sovio.co Made by Nikolay Suvandzhiev
UDevice
This app offers a comprehensive suite of developer and testing tools. It includes network utilities like HTTP(s) capture and DNS parsing, alongside system information and file management capabilities. Ideal for development, testing, and device management.
- HTTP(s) Capture/Rewrite
- SSH and Terminal access
- Python3 interpreter
- Cookie editing
- Network utilities (Ping, DNS, Traceroute, Port Scan)
- File manager
- Device fingerprinting and system info
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Make device debugging, network diagnostics, and security research more efficient. The app includes a rich set of professional tools covering network packet capture, request rewriting, SSH, local terminal, Python 3, file management, cookie editing, log analysis, JSON formatting, regular expressions, Ping, DNS lookup, Traceroute, port scanning, LAN scanning, and more. You can also view real-time device status and key system information, including CPU, system, network, memory, display, browser environment, and other device data, helping you quickly understand the current state of your device. Whether for development debugging, testing and troubleshooting, security research, or daily device management, everything can be done in one app.
Screenshots
Verdict
The clearest difference is rating: RegEx Lab at 4.8 against UDevice's 4.4. RegEx Lab also leads on price ($0.99 vs $4.99) and review sentiment (95% vs 78%). On update cadence, ads, in-app purchases and monetization model 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
RegEx Lab costs $0.99 and UDevice $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.
RegEx Lab holds the better App Store score, 4.8 against 4.4. Both are backed by a comparable volume of ratings — 172 and 36 respectively. Written reviews point the same way: 95% of RegEx Lab's written reviews are positive against 78% of UDevice's.
RegEx Lab ships an update monthly, UDevice every 3 weeks. The most recent releases landed on September 26, 2026 and September 27, 2026 respectively.
| Parameter | RegEx Lab | UDevice |
|---|---|---|
| Price | $0.99 — better | $4.99 |
| Rating | 4.8 (172 ratings) — better | 4.4 (36 ratings) |
| Positive reviews | 95.0% of reviews — better | 78.1% of reviews |
| Number of ratings | 172 — better | 36 |
| Update frequency | Monthly | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Best chart rank | #46 — better | #66 |
| Devices | iPhone, iPad, iPod, Mac — better | iPhone, iPad, Apple Watch |
| Requires iOS | 14.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 5 MB | 159 MB |
| Age rating | 4+ | 4+ |
| Developer | sovio | Gansu Zhenxian Network Technology Co., Ltd. |
Customer experience
RegEx Lab
UDevice
Bugs and requests
RegEx Lab
Reported bugs
14 issues- iPad's Files app cannot find the app or Regex files
- Export option creates messy files
- Mac version lacks developer effort
- Slow load screen when creating new expressions
- Select this match option is unreliable
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- Replace function is difficult to understand
- Cheat sheet accessibility issues
- Poor highlighting options
- Keyboard behavior issues
- Import functionality is broken
- Highlighted errors persist
- Difficulty with sequential regex application
- Lack of named group support
- Interface is entirely in English
Requested features
11 requests- Make app and Regex files visible in Files app
- Improve export option for Regex files
- Add a button to clear the text window
- Allow simultaneous viewing of text and replacement text
- Add a button to copy and replace text on the previous screen
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- Add more examples to the cheat sheet
- Add a user manual
- Automatically jump to matched text
- Add a Chinese language option
- Add 'snippets' or templates
- Add a special keyboard for common expressions
UDevice
Not enough reviews yet to summarise bugs or requests.
In-app purchases
RegEx Lab
No in-app purchases
UDevice
No in-app purchases
