Comparison

Stochastic Signal Processing vs Math Editor

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

Head to head
About

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.

Highlights
  • Interactive textbook format
  • Dynamic information display
  • Films and animations
  • 59 laboratory experiments
  • Real-time signal processing
  • Homework problems
Features
Read full description

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.

About

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.

Highlights
  • 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
Read full description

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

Screenshots

Stochastic Signal Processing4 screens
Math Editor4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard2 real differences · 8 level
Stochastic Signal Processing versus Math Editor: the parameters behind the verdict, then further details
ParameterStochastic Signal ProcessingMath Editor
PriceFreeFree
Rating4.7 (6 ratings)5.0 (4 ratings) — better
Positive reviews66.7% of reviews—
Number of ratings6 — better4
Update frequencyEvery 5 weeksEvery 3 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, Mac
Requires iOS15.0 — better16.6
Further details — not scored
Size73 MB10 MB
Age rating4+4+
DeveloperIan YoungEteri Byazrova

Customer experience

Stochastic Signal Processing

All ratings6 ratings
Positive83.3%
Neutral16.7%
Negative0.0%
Written reviews3 reviews
Positive66.7%
Neutral33.3%
Negative0.0%

Math Editor

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Stochastic Signal Processing

No in-app purchases

None

Math Editor

No in-app purchases

Questions

Is Stochastic Signal Processing free?
Stochastic Signal Processing is free to download, with no in-app purchases.
Is Math Editor free?
Math Editor is free to download, with no in-app purchases.
Which has better reviews, Stochastic Signal Processing or Math Editor?
Math Editor is rated higher. Stochastic Signal Processing averages 4.7 out of 5 from 6 ratings, while Math Editor averages 5.0 from 4 ratings.
Do Stochastic Signal Processing or Math Editor have ads?
Neither Stochastic Signal Processing nor Math Editor shows ads.
Which is updated more often, Stochastic Signal Processing or Math Editor?
Stochastic Signal Processing ships an update every 5 weeks, and Math Editor every 3 days. Most recently, Stochastic Signal Processing was updated on September 25, 2026 and Math Editor on September 9, 2026.

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