Comparison

EchoVis Game vs Mathematicus Parvus

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

Head to head
About

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.

Highlights
  • Audio-based gameplay
  • Hearing skill development
  • Multiple game levels
  • Interactive scenarios
  • Speech synthesizer messages
  • Designed for visually impaired
Read full description

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.

About

Mathematicus Parvus

Features
Read full description

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

EchoVis Game4 screens
Mathematicus Parvus3 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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.

UpkeepUpdate frequency

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.

Scorecard3 real differences · 6 level
EchoVis Game versus Mathematicus Parvus: the parameters behind the verdict, then further details
ParameterEchoVis GameMathematicus Parvus
Price$1.99Free — better
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 3 months — betterEvery 6 months
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaid—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better17.0
Further details — not scored
Size214 MB1 MB
Age rating12+4+
DeveloperTransition Technologies S.A.Kristof Nijs

In-app purchases

None

EchoVis Game

No in-app purchases

1 purchases

Mathematicus Parvus

One-time1
  • Purchase of the app$0.99

Questions

Is EchoVis Game free?
EchoVis Game costs $1.99, with no in-app purchases.
Is Mathematicus Parvus free?
Mathematicus Parvus is free to download, with in-app purchases available.
Do EchoVis Game or Mathematicus Parvus have ads?
Neither EchoVis Game nor Mathematicus Parvus shows ads.
Which is updated more often, EchoVis Game or Mathematicus Parvus?
EchoVis Game ships an update every 3 months, and Mathematicus Parvus every 6 months. Most recently, EchoVis Game was updated on September 9, 2026 and Mathematicus Parvus on September 10, 2026.

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