# Letterfull vs Echo Chain

Letterfull and Echo Chain both sit at 5.0 stars, but that hides the real split: 100% of Echo Chain's written reviews are positive against 50% of Letterfull's. Echo Chain also leads on update cadence (every 3 weeks vs every 6 months). Letterfull's advantage is in-app purchases (none vs 7) and chart position (#186 vs unranked). On rating, ratings volume, ads and monetization model there is nothing between them.

Letterfull costs $2.99 and Echo Chain $3.99 up front. Echo Chain sells 7 one-off in-app purchases. Letterfull asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Letterfull against 5.0 for Echo Chain. Both are backed by a comparable volume of ratings — 1 and 2 respectively. Written reviews are what separate them: 50% of Letterfull's written reviews are positive against 100% of Echo Chain's.

Letterfull ships an update every 6 months, Echo Chain every 3 weeks. The most recent releases landed on October 5, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | Letterfull | Echo Chain |
| --- | --- | --- |
| Price | **$2.99** | $3.99 |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/letterfull/id1639843494/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/echo-chain-multiplayer/id6751758104/reviews) |
| Number of ratings | 1 | **2** |
| Positive reviews | 50.0% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 3 weeks** |
| Monetization | Paid | Paid |
| Best chart rank | **#186** | — |
| Size | 10 MB | 196 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Oriol Gomez](https://appshunter.io/developer/1528856183) | [Unmbox Studios](https://appshunter.io/developer/1836642090) |

## What reviewers say

### Letterfull

[App page](https://appshunter.io/ios/app/letterfull/id1639843494)

**Currently charting:** #186 Top Paid · Word (US App Store)

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.

**Highlights:** 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

**Features:** macOS Compatibility

**In-app purchases:** none


### Echo Chain

[App page](https://appshunter.io/ios/app/echo-chain-multiplayer/id6751758104)

This is an accessible audio game that challenges your memory by having you listen to and repeat sequences. It offers multiple game modes, including multiplayer and single-player challenges, and allows for custom sound packs. The experience is premium, ad-free, and designed for both visually impaired and sighted players.

**Highlights:** Listen and repeat audio sequences, Multiplayer and single-player modes, Custom sound pack creation, Global leaderboards, Fully accessible for visually impaired players, Ad-free premium experience

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pixel Beats | $0.99 | one-time |
| Sonic Pulse | $0.99 | one-time |
| Cosmic Burst | $0.99 | one-time |
| Cyber Flow | $0.99 | one-time |
| Power Strike | $0.99 | one-time |
| Photon Slash | $1.99 | one-time |
| Tranquil Wave | $1.99 | one-time |


## Frequently asked questions

### Is Letterfull free?

Letterfull costs $2.99, with no in-app purchases.

### Is Echo Chain free?

Echo Chain costs $3.99, and also offers in-app purchases.

### Which has better reviews, Letterfull or Echo Chain?

Letterfull and Echo Chain are both rated 5.0 out of 5 on the App Store, from 1 and 2 ratings respectively.

### Do Letterfull or Echo Chain have ads?

Neither Letterfull nor Echo Chain shows ads.

### Which is updated more often, Letterfull or Echo Chain?

Letterfull ships an update every 6 months, and Echo Chain every 3 weeks. Most recently, Letterfull was updated on October 5, 2026 and Echo Chain on September 27, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*