EchoVis Game vs Mathematicus Parvus
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
EchoVis Game
This educational game enhances hearing skills through immersive audio environments and interactive challenges. Designed for visually impaired individuals, it also offers sighted users a unique way to develop auditory perception. Explore diverse levels and scenarios using only sound cues.
- Audio-based gameplay
- Hearing skill development
- Multiple game levels
- Interactive scenarios
- Speech synthesizer messages
- Designed for visually impaired
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EchoVis Game is a simple audio game aimed at the blind and visually impaired, among others. The main purpose of this game is to demonstrate one of the many ways in which smartphones can be used to develop the hearing skills of people with visual impairments. People without vision problems are also encouraged to try their hearing skills. There are several levels in this game, each with a different type of environoment and different tasks to compleate. The main tasks for the user in adventure game are to compleate the scenarios presented before the start of the level, paying attention to various gameplay elements that threaten the player's virtual life. This should be done primarily by analysing the sound information delivered to the player's ears. Thereforge, we recommend playing with stereo headphones connected to the smartphone and without looking at the screen. All necessary messages are read out to the user by the speech synthesizer. In our opinion, this application can be successfully used, for example, by instructors of spatial orientation or trainers conducting training on bringing the way the blind perceive the world to sighted people. In the Project, we have planned to create 3 games to achieve this goal. We are doing this as part of the Echovis project – for more information about it, see the website www.echovis.tt.com.pl. We encourage you to give us your feedback, ideas, possible errors in the operation of the application, etc.
Mathematicus Parvus
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Mathematicus Parvus is an app to practice and encourage mental arithmetic. The app is easy to use and fully accessible using VoiceOver. Add and subtract to 10, 100 or 1000. Multiply and divide with numbers from 1 to 12. Fun auditory and visual effects. Don't hesitate to try the app for free.
Screenshots
Verdict
The clearest difference is price: Mathematicus Parvus at Free against EchoVis Game's $1.99. EchoVis Game's advantage is in-app purchases (none vs 1) and iOS requirement (15.0 vs 17.0). On update cadence, ads 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
Mathematicus Parvus is free to download; EchoVis Game costs $1.99 up front. Mathematicus Parvus sells 1 one-off in-app purchase. EchoVis Game asks for nothing beyond the download.
EchoVis Game ships an update every 3 months, Mathematicus Parvus every 6 months. The most recent releases landed on September 9, 2026 and September 10, 2026 respectively.
| Parameter | EchoVis Game | Mathematicus Parvus |
|---|---|---|
| Price | $1.99 | Free — better |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 3 months — better | Every 6 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 214 MB | 1 MB |
| Age rating | 12+ | 4+ |
| Developer | Transition Technologies S.A. | Kristof Nijs |
In-app purchases
EchoVis Game
No in-app purchases
Mathematicus Parvus
- Purchase of the app$0.99
Questions
Is EchoVis Game free?
Is Mathematicus Parvus free?
Do EchoVis Game or Mathematicus Parvus have ads?
Which is updated more often, EchoVis Game or Mathematicus Parvus?
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