Stochastic Signal Processing vs Traumato
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.
Traumato
Explore the meaning of your dreams and unlock insights into your subconscious. This app offers a comprehensive dream dictionary and expert guidance to help you understand enigmatic symbols and navigate lucid dreaming.
- Dream interpretation
- Comprehensive dream dictionary
- Lucid dreaming guidance
- Subconscious mind insights
- Symbol analysis
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This new unique app combines the power of dream interpretation and a comprehensive dream dictionary to help you navigate the realm of lucid dreaming. Unlock the secrets hidden within your dreams and gain profound insights into your subconscious mind. With our expert guidance and a vast dream dictionary, you'll find answers to the enigmatic symbols that appear in your dreamscapes.
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Verdict
The clearest difference is rating: Stochastic Signal Processing at 4.7 against Traumato's 1.0. Stochastic Signal Processing also leads on in-app purchases (none vs 2) and ads (none vs shown). Traumato's advantage is update cadence (every 2 weeks vs every 5 weeks) and iOS requirement (13.0 vs 15.0). On price 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
Both are free to download. Traumato sells 2 in-app purchases, starting at $5.99 per year. Stochastic Signal Processing asks for nothing beyond the download.
Stochastic Signal Processing holds the better App Store score, 4.7 against 1.0. Both are backed by a comparable volume of ratings — 6 and 2 respectively.
Stochastic Signal Processing ships an update every 5 weeks, Traumato every 2 weeks. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.
| Parameter | Stochastic Signal Processing | Traumato |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (6 ratings) — better | 1.0 (2 ratings) |
| Positive reviews | 66.7% of reviews | — |
| Number of ratings | 6 — better | 2 |
| Update frequency | Every 5 weeks | Every 2 weeks — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 73 MB | 58 MB |
| Age rating | 4+ | 17+ |
| Developer | Ian Young | Berk Alp |
Customer experience
Stochastic Signal Processing
Traumato
In-app purchases
Stochastic Signal Processing
No in-app purchases
Traumato
- Pro Annual$5.991 Year
- Pro Monthly$12.991 Month
Questions
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