ThetaCalc vs StreamMateX
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ThetaCalc
This utility app provides a Reverse Polish Notation (RPN) calculator. Users can extend its functionality by programming custom functions and equations using JavaScript.
- Reverse Polish Notation (RPN) calculator
- User-programmable functions
- JavaScript equation support
- Extensible functionality
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ThetaCalc is a RPN (Reverse Polish Notation) calculator which can be extended by functions and equations programmed by the user in JavaScript.
StreamMateX
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StreamMate-X is an elegant utility that helps you extract and view detailed information about online videos from various platforms. With a sleek, intuitive interface, StreamMate makes it easy to analyze video metadata with just a few taps. Key Features: • Video Information Extraction: Quickly retrieve comprehensive metadata from videos across multiple platforms. • Multi-Platform Support: Compatible with major video platforms including YouTube, Twitter, and more. • Detailed Analytics: View essential video information including title, author, duration, publication date, and quality options. • Visual Preview: See video thumbnails and preview information before processing. • Dark Mode: Enjoy a comfortable viewing experience with our sleek dark interface, perfect for any environment. • User-Friendly Interface: Navigate effortlessly with our intuitive design, making video information extraction simple and efficient. • Privacy Focused: We prioritize your privacy and security - no unnecessary data collection. StreamMate for iOS is the perfect companion for content creators, researchers, and casual users who need quick access to video metadata. Enhance your online video browsing experience with StreamMate's powerful information extraction capabilities. Note: StreamMate is designed for authorized use of publicly available video information. Users are responsible for ensuring compliance with all platform terms of service and copyright regulations.
Screenshots
Verdict
The clearest difference is in-app purchases: ThetaCalc at none against StreamMateX's 1. ThetaCalc also leads on ads (none vs shown). StreamMateX's advantage is update cadence (every 9 days vs every 3 months). On price, device support and iOS requirement 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
Both are free to download. StreamMateX sells 1 in-app purchase, starting at $1.99 per month. ThetaCalc asks for nothing beyond the download.
ThetaCalc ships an update every 3 months, StreamMateX every 9 days. The most recent releases landed on November 3, 2026 and November 8, 2026 respectively.
| Parameter | ThetaCalc | StreamMateX |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (4 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 4 — better | — |
| Update frequency | Every 3 months | Every 9 days — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.6 | 16.6 — better |
| Further details — not scored | ||
| Size | 1 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | Felix Stehli | 中奇 任 |
In-app purchases
ThetaCalc
No in-app purchases
StreamMateX
- StreamMate Premium$1.991 Month
