GrepEx vs Metadata Viewer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
GrepEx
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GrepEx is the ultimate regex and dorking toolkit for developers, security researchers, and power users. Generate production-ready regular expressions in 22 programming languages and build precise search queries—all from your pocket. REGEX GENERATOR Stop wrestling with regex syntax. Select what you need to match, and GrepEx generates the pattern with language-specific code you can copy directly into your project. • 22 Languages: JavaScript, Python, Go, Rust, Java, C#, PHP, Ruby, Swift, Kotlin, TypeScript, Perl, Bash, PowerShell, and more • 80+ Templates: Email, URL, IP address, phone numbers, dates, credit cards, passwords, file paths, log parsing, and dozens more • Live Testing: Paste sample text and see matches highlighted instantly • Pattern Explanation: Understand what each regex component does in plain English • Safe Testing: Built-in protection against catastrophic backtracking (ReDoS) SEARCH DORKING ENGINE Craft advanced search queries to find exactly what you're looking for. Perfect for research, competitive analysis, and discovering hard-to-find resources. • Visual Query Builder: Combine operators like site:, filetype:, inurl:, intitle:, and intext: without memorizing syntax • 3,600+ GHDB Templates: Access the GHDB with categorized, searchable dork patterns • Smart Exclusions: Filter out noise with preset exclusion lists for cleaner results • One-Tap Search: Open your crafted query directly in your browser BUILT FOR PRODUCTIVITY • History & Favorites: Never lose a pattern you've created • Export & Import: Back up your patterns and transfer between devices • Dark Mode: Easy on the eyes during late-night coding sessions • VoiceOver Support: Full accessibility for all users PRIVACY FIRST Your data never leaves your device. No accounts, no cloud sync, no analytics, no tracking. GrepEx works entirely offline for core features. GREPEX PRO Unlock unlimited potential: • Save unlimited patterns and dorks • Access all 22 programming languages • Full GHDB search and save • Extended history (100 items) • Export/Import functionality Whether you're validating user input, parsing log files, scraping data, or conducting security research, GrepEx puts professional-grade tools in your hands. Download GrepEx and master regex today.
Metadata Viewer
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Metadata Viewer: File Info reveals technical details stored in photos, videos, audio, PDFs, documents, ebooks, and archives—privately on your iPhone. Choose from Files or Photos and get an organized report without sending the file to a server. Expand the category you need while the rest stays easy to scan. SEE WHAT IS REALLY THERE Only present, accessible values appear. Empty or unsupported fields are omitted. Reports include a file summary followed by dates, type identifiers, MIME type, and other available properties. PHOTOS AND IMAGES Inspect common image metadata through Image I/O: • Dimensions, color model, bit depth, alpha, orientation, and DPI • EXIF camera, lens, exposure, and capture information • Embedded GPS coordinates and location values • Optional raw metadata dictionaries for deeper inspection AUDIO AND VIDEO Inspect media through AVFoundation: • Duration, playability, and protected-content status • Track count and media type • Video dimensions and frame rate • Audio channels and sample rate • Codec identifiers and estimated bitrate • Common and format-specific container tags Each audio or video track is summarized separately, so mixed media files remain understandable. PDF, OFFICE, AND OPENDOCUMENT PDF reports can include page count, title, author, subject, keywords, creator, producer, dates, version, and other readable document attributes. Metadata Info reads package properties from DOCX, XLSX, PPTX, macro-enabled Office variants, ODT, ODS, and ODP. Reports can include authorship, revisions, application details, page or slide counts, statistics, and custom properties. EPUB AND ZIP PACKAGES Inspect EPUB publication metadata such as title, creator, language, identifier, publisher, date, subject, rights, and contributors when present. For ZIP and supported package formats, view archive type, entry count, and uncompressed size. Parsing stays local and bounded; encrypted or unsupported archives are not expanded. QUICK, FOCUSED WORKFLOW Browse Files or choose from Photos, then review the summary. Expand one category inline; opening another collapses the first. PRIVATE BY DESIGN Inspection runs on your device. No account or upload is required, and there are no analytics or advertising SDKs. DAILY USE AND UNLIMITED ACCESS One successful inspection is free each local calendar day. Cancelled selections, loading errors, and failed inspections do not use the daily inspection. After the daily inspection is used, choose recommended Yearly Access or optional Forever Access for unlimited inspections. Restore Purchases is available in Settings and on the purchase screen. Existing Lifetime Access purchases remain valid. YEARLY AND FOREVER ACCESS: - Metadata Info inspects selected files locally on your device. It does not require an account, upload files for processing, or include analytics or advertising SDKs. - One successful metadata inspection is free each local calendar day. After that daily inspection is used, unlimited access is required before another completed result is shown. - Yearly Access is an auto-renewable subscription billed once per year. It renews automatically unless canceled at least 24 hours before the end of the current period. You can manage or cancel it in your App Store account settings. Forever Access is a separate non-consumable, one-time purchase. Existing Metadata Info Lifetime purchases remain valid as Forever Access and can be restored. Apple processes purchases through StoreKit under Apple's terms and privacy practices. - Results contain only metadata that is present, readable, and supported by the system or the app. Encrypted, unreadable, unavailable, and unsupported values are omitted. ZIP-based formats are inspected locally with bounded archive, entry-count, and metadata-entry limits. Encrypted archives are not supported. Terms: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy: https://yumcut.com/mobile/privacy
Screenshots
Verdict
The clearest difference is price: Metadata Viewer at Free against GrepEx's $1.99. GrepEx's advantage is in-app purchases (none vs 1) and update cadence (weekly vs every 6 weeks). On ads 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
Metadata Viewer is free to download; GrepEx costs $1.99 up front. Metadata Viewer sells 1 one-off in-app purchase. GrepEx asks for nothing beyond the download.
GrepEx ships an update weekly, Metadata Viewer every 6 weeks. The most recent releases landed on October 28, 2026 and October 14, 2026 respectively.
| Parameter | GrepEx | Metadata Viewer |
|---|---|---|
| Price | $1.99 | Free — better |
| Update frequency | Weekly — better | Every 6 weeks |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 13.4 — better | 18.0 |
| Further details — not scored | ||
| Size | 12 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | Jeremy Laratro | Ihar Shaduryn |
In-app purchases
GrepEx
No in-app purchases
Metadata Viewer
- Metadata Info Lifetime$3.99
Questions
Is GrepEx free?
Is Metadata Viewer free?
Do GrepEx or Metadata Viewer have ads?
Which is updated more often, GrepEx or Metadata Viewer?
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