Comparison

SoundEcho vs Blind 20

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

Head to head
About

SoundEcho

A fun and accessible memory game using sound cues. Players match pairs of buttons that produce the same sound to clear the board. Supports multiple sound themes and player counts, with Game Center integration.

Highlights
  • Sound-based memory matching
  • VoiceOver accessibility
  • Animal and computer sound themes
  • Multiple difficulty levels (10, 15, 20 sounds)
  • 2-4 player real-time multiplayer
  • Game Center integration
Features
Read full description

SoundEcho is a memory game with sounds that is easy to play and fully accessible with VoiceOver. SoundEcho is enjoyable for blind, low vision and sighted players alike. The gameplay is simple. Buttons showing a letter, number or smiley are spread across the screen. Tap a button to hear a sound. If two different buttons produce the same sound, they disappear. Find all matching sounds as quickly as possible with as few taps as you can. Choose from 4 sound categories: the classic animal and computer sounds, or the alternative traffic and musical instrument sounds. Each game contains 10, 15 or 20 sound pairs. SoundEcho integrates Game Center so you can compare scores, track achievements and play real-time matches with 2 to 4 players. SoundEcho was nominated for the 2023 Golden Apple Awards by the AppleVis website. Try SoundEcho for free today.

About

Blind 20

Test your strategy and luck by sorting randomly generated numbers from 1 to 999, one at a time, into an ascending list of 20. Compete daily in live challenges against players worldwide and track your progress. Discover hidden secrets and share your achievements.

Highlights
  • Number sorting from 1 to 999
  • Daily live gaming challenges
  • Real-time global competition
  • Leaderboard rankings
  • Stats and achievements tracking
  • Intuitive interface
  • Hidden secrets
Features
Read full description

Embark on a thrilling number sorting adventure with the captivating Blind 20 game! Prepare to test your strategy and luck as you strive to place randomly generated numbers in order, given one at a time, from 1 to 999. Try to fill the list of 20 numbers without knowing what's coming next! Always remember to watch out for the sneaky two's! Take on the daily live gaming adventure! Join the synchronized excitement as players from around the world unite for a shared gaming experience. Compete head-to-head in the thrilling challenge, all in real-time, once a day, and see who remains as you go. Can you outlast your competitors and rise up the ranks? Discover the thrill of camaraderie and competition as you battle for supremacy. When the dust settles, flaunt your impressive stats and achievements, showcasing your triumphs to your fellow gamers. Embrace the excitement of collective gaming and revel in the glory of your victories! In Blind 20, every moment counts as you receive a stream of numbers, each requiring a strategic decision. Can you maintain your composure and carefully place them in the right order? With each correct placement, your list grows, revealing your true skill and precision. But watch out! A single wrong move could shatter your ascending masterpiece. The pressure is on as you try to beat your own high score and challenge your friends to top it. Can you achieve the ultimate goal of a perfectly ascending sorted list of 20 numbers? The game's sleek and intuitive interface makes it easy for players of all ages to jump right in. Simply tap your way to victory as you conquer each new number in the challenge. The game adapts to your progress, gradually increasing the difficulty to keep you engaged and entertained. Take on the challenge you've seen trending on TikTok and find out for yourself how addicting it is. Easily view your remaining options and keep track of your score. You can view your stats any time and share with friends. Also try to find the hidden secrets that may appear along the way and if you're really daring try to find them all! Test your luck and strategic thinking as you strive for perfection in Blind 20: Number Challenge. Share your triumphs with friends, compare scores, and inspire friendly competition. Can you conquer the leaderboards and become the ultimate number sorting champion? Don't wait another moment! Download Blind 20 now and immerse yourself in a thrilling world of numerical conquest. Get ready to ascend to new heights of strategy and excitement! Tags: Blind 20, Blind Number Challenge, 20 Number Game, 20 Number Challenge, Tik Tok Challenge, TikTok Number Challenge Trend, 2020 Blind, 20/20 Blind Number Challenge, Sneaky Two's, Blind 20: Number Challenge, NumberTok

Screenshots

SoundEcho3 screens
Blind 204 screens

Verdict

The call

The clearest difference is in-app purchases: Blind 20 at none against SoundEcho's 1. Blind 20 also leads on rating (4.8 vs 4.3) and ratings volume (25 vs 3). SoundEcho's advantage is ads (none vs shown) and review sentiment (100% vs 90%). On price, device support 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. SoundEcho sells 1 one-off in-app purchase. Blind 20 asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Blind 20 holds the better App Store score, 4.8 against 4.3. That said, the two scores are not equally well evidenced: Blind 20 has 25 ratings behind it against 3, so its average is the more settled of the two. Written reviews complicate that: 100% of SoundEcho's written reviews are positive against 90% of Blind 20's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

SoundEcho ships an update every 5 weeks, Blind 20 every 2 weeks. Both last shipped on November 3, 2026.

Scorecard7 real differences · 3 level
SoundEcho versus Blind 20: the parameters behind the verdict, then further details
ParameterSoundEchoBlind 20
PriceFreeFree
Rating4.3 (3 ratings)4.8 (25 ratings) — better
Positive reviews100.0% of reviews — better90.0% of reviews
Number of ratings325 — better
Update frequencyEvery 5 weeksEvery 2 weeks — better
AdsNo — betterYes
In-app purchasesYesNo — better
MonetizationFree — betterAd-supported
DevicesiPhone, iPad — betteriPhone
Requires iOS17.016.6 — better
Further details — not scored
Size7 MB17 MB
Age rating12+4+
DeveloperKristof NijsScott Clark

Customer experience

SoundEcho

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Blind 20

All ratings24 ratings
Positive95.8%
Neutral0.0%
Negative4.2%
Written reviews10 reviews
Positive90.0%
Neutral0.0%
Negative10.0%

In-app purchases

1 purchases

SoundEcho

One-time1
  • Purchasing the app$4.49
None

Blind 20

No in-app purchases

Questions

Is SoundEcho free?
SoundEcho is free to download, with in-app purchases available.
Is Blind 20 free?
Blind 20 is free to download, with no in-app purchases.
Which has better reviews, SoundEcho or Blind 20?
Blind 20 is rated higher. SoundEcho averages 4.3 out of 5 from 3 ratings, while Blind 20 averages 4.8 from 25 ratings.
Do SoundEcho or Blind 20 have ads?
Blind 20 shows ads; SoundEcho does not.
Which is updated more often, SoundEcho or Blind 20?
SoundEcho ships an update every 5 weeks, and Blind 20 every 2 weeks. Most recently, SoundEcho was updated on November 3, 2026 and Blind 20 on November 3, 2026.

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