SoundEcho vs Letterfull
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
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.
- 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
Read full descriptionHide 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.
Letterfull
A word puzzle game where you form words by touching letters on a grid. Avoid filling the board as letters appear faster with each level. Supports multiple languages and offers accessibility options.
- Form words by touching letters
- Avoid filling the game grid
- Letters appear faster each level
- Supports English, Spanish, Catalan, Italian
- Accessibility options for VoiceOver
- Minimum 3-letter words required
Read full descriptionHide full description
Have you always wanted to play a game where you wish you could make up your own words but you can't? welcome to Letterfull! The game where you must manage to form words without filling the five by five game grid. The mechanic of the game is quite simple. The game board consists of five rows of five columns, which may contain letters that appear faster every level. With the letters that appear, you must form words by touching the letters with your finger. When you touch a letter, it will move to the bottom of the board, after the separator, i.e. the word you are trying to form. To submit the word and check if it is correct, (must have at least 3 letters and be in the dictionary of the chosen language -more on that later), you can tap the submit button (or double-tap with 2 fingers if you use VoiceOver). If you want to send all the letters back to the end of the game board, either because you made a mistake or because you saw another letter that can form a better word, you can tap the move all button or, if you use VoiceOver, do the back gesture (2 finger scrub). You can also tap one letter of the letters you have in your word to send it back to the end of the game board. The game is available in English, Spanish, Catalan and Italian, and changing the language does not involve any change in the game interface, only in the dictionary used to check if the words are correct. For people learning English, Catalan or another language available in the game, it can be very useful.
Screenshots
Verdict
The clearest difference is review sentiment: SoundEcho at 100% against Letterfull's 50%. SoundEcho also leads on price (Free vs $2.99) and update cadence (every 5 weeks vs every 6 months). Letterfull's advantage is rating (5.0 vs 4.3) and in-app purchases (none vs 1). On 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
SoundEcho is free to download; Letterfull costs $2.99 up front. SoundEcho sells 1 one-off in-app purchase. Letterfull asks for nothing beyond the download.
Letterfull holds the better App Store score, 5.0 against 4.3. Both are backed by a comparable volume of ratings — 3 and 1 respectively. Written reviews complicate that: 100% of SoundEcho's written reviews are positive against 50% of Letterfull's, so the app with the better star average is not the one people write more warmly about.
SoundEcho ships an update every 5 weeks, Letterfull every 6 months. The most recent releases landed on September 25, 2026 and October 5, 2026 respectively.
| Parameter | SoundEcho | Letterfull |
|---|---|---|
| Price | Free — better | $2.99 |
| Rating | 4.3 (3 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 100.0% of reviews — better | 50.0% of reviews |
| Number of ratings | 3 — better | 1 |
| Update frequency | Every 5 weeks — better | Every 6 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free — better | Paid |
| Best chart rank | — | #185 — better |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 7 MB | 10 MB |
| Age rating | 12+ | 4+ |
| Developer | Kristof Nijs | Oriol Gomez |
Customer experience
SoundEcho
Letterfull
In-app purchases
SoundEcho
- Purchasing the app$4.49
Letterfull
No in-app purchases









