Comparison

EchoVis Street vs Otso

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

Head to head
About

EchoVis Street

An audio-based game designed to enhance hearing skills, particularly for visually impaired individuals. Players navigate virtual environments by analyzing traffic sounds to avoid obstacles. It can also serve as an educational tool for understanding the blind perspective.

Highlights
  • Audio-based gameplay
  • Traffic sound simulation
  • Virtual road crossing challenges
  • Text-to-speech integration
  • Educational tool for spatial orientation
  • Multiple game levels
Read full description

EchoVis Street is a simple audio game, aimed for blind and visually impaired people. The main goal of this game is to present one of many possibilities of use the mobile devices to develop ability to use hearing skills by visually impaired people. We recommend sight persons also to try their skills in this area. This game consist several levels, each with a different traffic sounds simulation. The player's main objective is to cross the road in the virtual environment avoiding to be hit by a passing car or tram. This should be done in base of acoustic informations analysis arriving to the player's ears. Therefore, we recommend playing with stereophonic headphones connected to your smartphone and without looking at mobile phone screen. All of the necessary communicates are being read with use of text to speech synthesizer In our opinion, this application can be successfully used, for example, by spatial orientation instructors or trainers conducting training in explaining to sighted people the way the blind perceive the world. To reach this goal, we have planned to create 3 games in the EchoVis project boundaries - more information can be obtained on www.echovis.tt.com.pl website. We encourage you to provide us with your opinions, ideas, application functionality issues, etc. Watch out for speeding cars and trams.

About

Otso

This app provides a visual countdown timer that uses a shrinking colored wedge instead of numbers. It offers various aesthetic designs and tactile feedback, making time management intuitive for all ages. The app is designed for privacy with no accounts or data collection.

Highlights
  • Visual countdown wedge
  • Customizable faces and sounds
  • Dynamic Island and Lock Screen integration
  • No ads or subscriptions
  • Private by design
  • Tactile feedback and animations
Features
Read full description

A colored wedge shrinks as time runs down. See how much is left at a glance, without having to read the numbers or do the math. Buy once and use it on iPhone, iPad, Apple Watch, and Mac. No ads, no subscriptions, no account. No tracking or data collection. MAKE IT YOURS • Choose a dial maximum of 5, 10, 15, 30, 60, or 120 minutes • Count clockwise or counterclockwise • Adjust sound and haptic feedback on supported devices ON iPHONE AND iPAD • Drag the dial to set a timer; tap to start, pause, or resume • Smooth dialing at up to 120 Hz on ProMotion displays • Swipe beside the dial to change faces, or swipe up for settings • Check the countdown on the Lock Screen and, on supported iPhones, in the Dynamic Island • Keep the screen awake while the timer is running in the foreground • Receive a finish notification in the background when notifications are enabled ON APPLE WATCH All fifteen faces, right on your wrist. Turn the Digital Crown to set the time, tap to start or pause, swipe left or right to change faces, and swipe up for settings. The Watch timer works independently of the iPhone timer. ACCESSIBILITY VoiceOver labels and timer actions, keyboard controls on Mac and iPad, and animations that adapt to Reduce Motion. DETAILS YOU CAN FEEL Each face has its own sounds: Wood knocks, Glass chimes, and LCD clicks like a watch button. Flick the dial and it spins on, clicking past each mark as it slows to a stop. On iPhone and iPad, tilting the device changes the reflections. On Mac, they follow the pointer. Party celebrates with confetti, while Aurora adds a soft shimmer. Motion effects are reduced when Reduce Motion is on. FIFTEEN FACES Each has its own character. • Classic — charcoal body, glass lens, red disc • Pastel — soft candy colors and a textured knob • Rainbow — lilac, with an arc that shrinks color by color • Neumorph — soft, sculpted, quiet • Glass — translucent, on a light wall • Flat — pure, bold, no chrome • Paper — warm stationery, an ink needle • Wood — turned walnut, terracotta wedge • LCD — dot matrix on a backlit sage screen • Rugged — machined blades behind thick rubber • Midnight — black with a hot coral glow • Halo — a glowing amber ring • Neon — a magenta glow against the dark • Aurora — a curtain of light over a starfield • Party — a frosted cake that bursts into confetti Otso takes its name from the bear of Finnish folklore. A timer should sit quietly in the room and be understood at a glance. For lessons, workshops, exams, focused work, homework, and cooking — whenever it helps to see time passing.

Screenshots

EchoVis Street4 screens
Otso4 screens

Verdict

The call

The clearest difference is review sentiment: Otso at 100% against EchoVis Street's 50%. Otso also leads on rating (5.0 vs 4.0) and in-app purchases (none vs 3). EchoVis Street's advantage is price (Free vs $0.99) and iOS requirement (15.0 vs 18.0). On ratings volume, 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

EchoVis Street is free to download; Otso costs $0.99 up front. EchoVis Street sells 3 one-off in-app purchases. Otso asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Otso holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 2 and 1 respectively. Written reviews point the same way: 50% of EchoVis Street's written reviews are positive against 100% of Otso's.

UpkeepUpdate frequency

EchoVis Street ships an update every 4 months, Otso every 3 weeks. The most recent releases landed on October 2, 2026 and October 11, 2026 respectively.

Scorecard7 real differences · 3 level
EchoVis Street versus Otso: the parameters behind the verdict, then further details
ParameterEchoVis StreetOtso
PriceFree — better$0.99
Rating4.0 (2 ratings)5.0 (1 ratings) — better
Positive reviews50.0% of reviews100.0% of reviews — better
Number of ratings2 — better1
Update frequencyEvery 4 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases — betterPaid
DevicesiPhone, iPad, iPodiPhone, iPad, Mac, Apple Watch — better
Requires iOS15.0 — better18.0
Further details — not scored
Size197 MB5 MB
Age rating12+4+
DeveloperTransition Technologies S.A.SIMON HEUSCHKEL

Customer experience

EchoVis Street

All ratings2 ratings
Positive50.0%
Neutral50.0%
Negative0.0%
Written reviews2 reviews
Positive50.0%
Neutral50.0%
Negative0.0%

Otso

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

3 purchases

EchoVis Street

One-time3
  • Small payment$0.99
  • Medium Payment$2.99
  • Large payment$4.99
None

Otso

No in-app purchases

Questions

Is EchoVis Street free?
EchoVis Street is free to download, with in-app purchases available.
Is Otso free?
Otso costs $0.99, with no in-app purchases.
Which has better reviews, EchoVis Street or Otso?
Otso is rated higher. EchoVis Street averages 4.0 out of 5 from 2 ratings, while Otso averages 5.0 from 1 ratings.
Do EchoVis Street or Otso have ads?
Neither EchoVis Street nor Otso shows ads.
Which is updated more often, EchoVis Street or Otso?
EchoVis Street ships an update every 4 months, and Otso every 3 weeks. Most recently, EchoVis Street was updated on October 2, 2026 and Otso on October 11, 2026.

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