Probability Distribution vs iMSSpiece
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Probability Distribution
This app allows users to calculate probabilities and visualize various continuous and discrete probability distributions. It supports a wide range of common distributions and plans to add more in the future.
- Calculate probabilities
- Visualize distributions
- Normal (Gaussian) distribution
- Binomial distribution
- Poisson distribution
- Exponential distribution
Read full descriptionHide full description
Calculate probabilities and visualize probability distributions. Supported continuous probability distributions: - Normal (Gaussian) - t (Student's t) - Chi-Squared - F - Exponential - Gamma - Beta - Log-normal Supported discrete probability distributions: - Binomial - Poisson - Pascal - Geometric - Hypergeometric and more are coming.
iMSSpiece
This app allows users to experiment with interactive motion sound systems and instrumental scenegraphy. It features a comprehensive score system, an intuitive cue management interface, and a flexible preset system for sound customization. Users can also define and edit regions for motion detection.
- Interactive motion sound systems
- Instrumental scenegraphy
- Mask Motion with OpenCV
- Customizable score system
- Intuitive cue management
- Faust Soundplayer editor
- Editable region system
Read full descriptionHide full description
### Overview Experience the cutting edge of interactive motion and sound with iMSSpiece, an advanced demonstration of the iMSS framework designed for iPad. Combining instrumental scenography, real-time sound processing, and OpenCV-based image analysis, iMSSpiece provides a flexible environment for experimenting with Mask Motion and interactive audiovisual works. **Example scores:** - Glossary – LWS_Part1 / LWS_Part2 / LWS_Part3 ### Cross-Platform Piece Management Create, export, import, and share complete works using the `.imsspiece` format across iPad, macOS, and Windows: - Package cues, masks, presets, Player mappings, and authorized audio files into a single work. - Import shared Pieces through Files, AirDrop, or other iOS sharing methods. - Preserve Piece UUID and revision information across devices. - Validate complete packages before installation and activation. - Support Free Pieces containing up to 16 independent audio files. - Use the same 42 Player menu values across platforms, including Stop, Thru, and Audio 1–40. - Maintain compatible Motion, Region, Cue, Custom Mask, and Faust Player controls. - Safely update an existing Piece or retain the imported work as a separate copy when conflicts occur. #### Cue System Easily manage and trigger cues through an intuitive interface: - Define cues with precise triggers and timing. - View countdowns and Region-trigger activity. - Edit cue settings during real-time experimentation. - Use above and below comparison modes for motion-based triggers. #### Preset System (Pattr) Customize and automate sound using the Faust Soundplayer editor: - Configure up to 16 Players linked to cues and motion parameters. - Select Stop, Thru, or one of 40 audio parts for each Player. - Control harmonization, gain, playback, looping, and motion mapping. - Restore defaults, validate changes, and save global presets. - Automatically preserve Player and interface settings with each Piece. #### Region Editing System Create and manage Regions for Mask Motion detection: - Configure four editable Regions linked to individual cues. - Restore defaults or create custom Region presets. - Choose from Rotated Rectangle, Rotated Ellipse, Circle, and Custom Drawing masks. - Adjust motion threshold, motion gain, and summed motion gain. - Preview camera input, masks, motion activity, and mapped values in real time. - Preserve compatible Region and Custom Mask data across iPad, macOS, and Windows.
Screenshots
Verdict
The clearest difference is in-app purchases: iMSSpiece at none against Probability Distribution's 1. iMSSpiece also leads on rating (5.0 vs 4.5) and update cadence (every 3 days vs every 2 weeks). Probability Distribution's advantage is ratings volume (17 vs 1). On price, ads 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. Probability Distribution sells 1 one-off in-app purchase. iMSSpiece asks for nothing beyond the download.
iMSSpiece holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: Probability Distribution has 17 ratings behind it against 1, so its average is the more settled of the two.
Probability Distribution ships an update every 2 weeks, iMSSpiece every 3 days. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.
| Parameter | Probability Distribution | iMSSpiece |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (17 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 33.3% of reviews | — |
| Number of ratings | 17 — better | 1 |
| Update frequency | Every 2 weeks | Every 3 days — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad | iPhone, iPad, iPod, Apple Watch — better |
| Requires iOS | 16.0 | 15.6 — better |
| Further details — not scored | ||
| Size | 7 MB | 321 MB |
| Age rating | 4+ | 4+ |
| Developer | Madiyar Aitbayev | Lisilog |
Customer experience
Probability Distribution
iMSSpiece
In-app purchases
Probability Distribution
- Unlock All Distributions$2.99
iMSSpiece
No in-app purchases
Questions
Is Probability Distribution free?
Is iMSSpiece free?
Which has better reviews, Probability Distribution or iMSSpiece?
Do Probability Distribution or iMSSpiece have ads?
Which is updated more often, Probability Distribution or iMSSpiece?
Other comparisons















