Comparison

RegExp vs OmniClassify

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

Head to head
About

RegExp

This tool allows developers to test and explore regular expression patterns across various programming language syntaxes. It offers advanced configuration options and synchronization across devices, making it ideal for learning and building complex patterns.

Highlights
  • Multiple regex engine support
  • Advanced Swift regex engine
  • Save and organize regex patterns
  • iCloud sync across devices
  • Supports Swift, Objective-C, ECMAScript, and Go regex flavors
Features
Read full description

RegExp is a regular expression tester for developers, on Mac, iPhone and iPad. Write a pattern, paste your text, and see every match and capture group as you type, with the same engine your code uses. Six flavors, real engines: • Swift Regex • NSRegularExpression (Objective-C and Swift) • JavaScript (ECMAScript) • PCRE2, the engine of PHP • Go and Go (POSIX) Write and understand patterns: • Matches and capture groups highlighted in the test string, with their names • Errors marked right in the pattern, unbalanced brackets too • Substitution with each engine's replacement syntax, and a list mode that extracts one line per match • A quick reference of each flavor's syntax: select an item to insert it • Copy the pattern as ready-to-use Swift, Objective-C, JavaScript, Go or PHP code • Jump between matches; slow patterns time out instead of freezing the app Keep your patterns: • Sessions and folders, your own regex notebook, synced with iCloud across your devices • Search, duplicate, export and import sessions, or open one in its own window • Shortcuts actions, Spotlight search, and a Services menu item on the Mac for selected text Most of RegExp is free. RegExp Pro, a one-time purchase that works with Family Sharing, adds: • Explain: what every part of a pattern does, in plain language, and what the selected flavor doesn't support • Test cases: strings a pattern must or must not match, checked on every run • Apple Intelligence: write a pattern from a description, or get a summary of one (on supported devices) • The advanced options of every flavor RegExp speaks English, German, French, Spanish, Italian, Portuguese, Ukrainian, Russian, Japanese and Chinese. Made by an independent developer. Questions or ideas? Write to support@loshadki.app.

About

OmniClassify

Features
Read full description

Transform your iPhone into a powerful machine learning lab. OmniClassify is the complete iOS toolkit for training, deploying, and running AI models entirely on-device. Your data never leaves your device—complete privacy, zero cloud uploads. COMPLETE ML WORKFLOW Import datasets from local folders, videos, Parquet files, or download directly from HuggingFace. Train custom models using CreateML, ONNX, or Vision Transformer architectures. Run real-time inference on images, videos, and live camera feed. Process everything locally with zero data transmission. KEY FEATURES Dataset Management Import from local folders, videos, Parquet files, or HuggingFace (Premium). DICOM medical imaging support. Automatic class detection, train/validation splits, and comprehensive statistics. Model Training (Premium) Train classification and segmentation models with CreateML, ONNX, or ViT. Custom training iterations (unlimited), advanced preprocessing, and progress monitoring. Model Import CoreML and ONNX model support. HuggingFace model downloads with automatic server-side conversion. Thousands of pre-trained models available. Image Classification Batch processing with unlimited capacity (Premium). Multi-model inference, confidence scores, detailed metrics, and result export (Premium). Object Detection YOLO model support with real-time bounding boxes. Multi-object detection, confidence thresholds, and live camera capabilities. Image Segmentation Semantic segmentation with pixel-level masks. Visual overlays and export capabilities (Premium). Video Processing Frame-by-frame AI analysis with custom intervals. Export annotated videos with bounding boxes, labels, and segmentation overlays. Live Camera Inference Real-time classification, detection, and segmentation using iPhone camera. Instant on-device results, works completely offline. DICOM Medical Imaging Full DICOM file support with multi-frame extraction, header reading, and integration with classification/detection models. HuggingFace Integration (Premium) Browse and download thousands of datasets and models. Automatic ONNX/CoreML conversion. Search by task type and license. Advanced Analytics (Premium) Confusion matrices, training metrics, validation curves. Export to JSON, CSV, PDF formats. Automation & Triggers Detection-based automations, Shortcuts app integration, custom notifications, URL opening, and haptic feedback. 100% ON-DEVICE PROCESSING Everything happens locally on your iPhone. Training, inference, analysis, and storage—all without internet or cloud servers. Your images, models, and data remain completely private. No uploads, no tracking, no data collection. PRIVACY FIRST All ML processing on-device. No cloud uploads. Complete offline functionality. No analytics or tracking. HIPAA-compliant workflows for medical imaging. PERFECT FOR ML researchers, data scientists, medical imaging professionals, computer vision developers, students, and hobbyists experimenting with AI. PREMIUM FEATURES Unlock unlimited datasets, unlimited models, unlimited inference, advanced training, exports, HuggingFace integration, and comprehensive analytics. Free tier includes 3 datasets, 2 models, and unlimited inference—perfect for getting started. Start building and deploying AI models on your iPhone today. Complete privacy. Complete control. Complete ML toolkit. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://omniclassify.com/privacy

Screenshots

RegExp4 screens
OmniClassify4 screens

Verdict

The call

The clearest difference is update cadence: OmniClassify at every 2 days against RegExp's every 6 months. On price, 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

Both are free to download. RegExp sells 1 one-off in-app purchase and OmniClassify sells 3 in-app purchases, starting at $3.99 per 7 days. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

RegExp ships an update every 6 months, OmniClassify every 2 days. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

Scorecard1 real difference · 7 level
RegExp versus OmniClassify: the parameters behind the verdict, then further details
ParameterRegExpOmniClassify
PriceFreeFree
Positive reviews100.0% of reviews—
Update frequencyEvery 6 monthsEvery 2 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, Mac — betteriPhone, iPad
Requires iOS18.117 — better
Further details — not scored
Size10 MB131 MB
Age rating4+4+
DeveloperLoshadki, LLCMartin Kropf

In-app purchases

1 purchases

RegExp

One-time1
  • RegExp Pro$2.99
3 purchases

OmniClassify

Subscriptions3
  • Full Access (1 week)7 Days trial$3.997 Days
  • Full Access (1 month)7 Days trial$9.991 Month
  • Full Access (1 year)7 Days trial$99.991 Year

Questions

Is RegExp free?
RegExp is free to download, with in-app purchases available.
Is OmniClassify free?
OmniClassify is free to download, with in-app purchases available.
Do RegExp or OmniClassify have ads?
Neither RegExp nor OmniClassify shows ads.
Which is updated more often, RegExp or OmniClassify?
RegExp ships an update every 6 months, and OmniClassify every 2 days. Most recently, RegExp was updated on November 3, 2026 and OmniClassify on October 30, 2026.

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