Stochastic Signal Processing vs Math Editor
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Stochastic Signal Processing
Explore the processing of random signals like speech, music, and climate data. This interactive textbook offers dynamic information, films, animations, and 59 real-time laboratory experiments using your device's camera and microphone. It's designed for those with prior signal processing and probability theory knowledge.
- Interactive textbook format
- Dynamic information display
- Films and animations
- 59 laboratory experiments
- Real-time signal processing
- Homework problems
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Speech, music, seismic vibrations, oil prices, and climate measurements are all examples of stochastic (random) signals. In this textbook—intended for individuals with prior training in introductory signal processing and introductory probability theory—we develop techniques to process such signals to extract useful information. We present case studies ranging from music to photographic images to oil prices to climate data to the motion of individual biomolecules. This textbook, as an interactive textbook ("iBook"), makes use of your device's ability to display dynamic information through films and animations and to hear the results of the techniques applied to music. At the end of every chapter there are homework problems ranging from easy to "olympic". We make use of your device's interactive capabilities to offer 59 laboratory experiments in signal processing. The experiments use the camera, the microphone, the speakers, and the graphical user interface. These experiments are not simulations; they are examples of real digital processing of signals in your device. In this time of at-home and online learning, this is the way to learn signal processing through study and experimentation.
Math Editor
Create and organize mathematical notes and presentations with a user-friendly interface. Input complex notations, import or create images, and utilize voice commands. Export documents as PDFs or images, and generate LaTeX strings.
- Enter complex mathematical notations
- Import and create images with built-in editor
- Handwritten notes optimized for Apple Pencil
- Create documents with rich formatting
- Voice commands and custom shortcuts
- Export to PDF and image formats
- Generate LaTeX strings
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Create, customize and organize Math notes and presentations with friendly interface: • Enter fractions, square roots, exponents, subscripts, integrals, sums, products, limits, piecewise functions, matrices, and most other mathematical notations. • Import images from external sources, or create them with built in image editor. • Take handwritten notes with the image editor, optimized for Apple Pencil. • Create documents with headers, text content, formulas, matrices, images and written notes. Highlight, color code and choose from different fonts. • Use Apple’s Voice recognition plus Math Editor’s voice commands. Create your own voice and keyboard commands for formulas or matrices. • Convert documents into PDF format or image format and export the files. • Generate LaTeX strings from your typed entries. View string blocks between matching LaTeX delimiters. • Create presentations, record and export presentation videos. • Save your work on your device and in iCloud. Synchronize data between devices. Made for students, teachers, tutors, engineers, scientists, and anyone who needs polished custom Math notes on iPhone/iPad. Help is available. Dark mode is supported. We welcome feedback: graphmath@aol.com
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Verdict
The clearest difference is update cadence: Math Editor at every 3 days against Stochastic Signal Processing's every 5 weeks. Math Editor also leads on rating (5.0 vs 4.7). On price, ratings volume, ads and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
Math Editor holds the better App Store score, 5.0 against 4.7. Both are backed by a comparable volume of ratings — 6 and 4 respectively.
Stochastic Signal Processing ships an update every 5 weeks, Math Editor every 3 days. The most recent releases landed on September 25, 2026 and September 9, 2026 respectively.
| Parameter | Stochastic Signal Processing | Math Editor |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (6 ratings) | 5.0 (4 ratings) — better |
| Positive reviews | 66.7% of reviews | — |
| Number of ratings | 6 — better | 4 |
| Update frequency | Every 5 weeks | Every 3 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Requires iOS | 15.0 — better | 16.6 |
| Further details — not scored | ||
| Size | 73 MB | 10 MB |
| Age rating | 4+ | 4+ |
| Developer | Ian Young | Eteri Byazrova |
Customer experience
Stochastic Signal Processing
Math Editor
In-app purchases
Stochastic Signal Processing
No in-app purchases
Math Editor
No in-app purchases
Questions
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