# Big binary clock vs Echo

The clearest difference is review sentiment: Echo at 100% against Big binary clock's 50%. Echo also leads on update cadence (every 3 months vs every 13 months). Big binary clock's advantage is iOS requirement (14.4 vs 18.6). On price, ads, in-app purchases and monetization model there is nothing between them.

Big binary clock costs $0.99 and Echo $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Big binary clock ships an update every 13 months, Echo every 3 months. The most recent releases landed on September 24, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Big binary clock | Echo |
| --- | --- | --- |
| Price | $0.99 | $0.99 |
| Rating | **[4.6 (5 ratings)](https://appshunter.io/ios/app/big-binary-clock/id572188132/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 50.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 13 months | **Every 3 months** |
| Monetization | Paid | Paid |
| Size | 2 MB | 2 MB |
| Requires iOS | **14.4** | 18.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Alexander Rutkowskij](https://appshunter.io/developer/518370415) | [鹏 杨](https://appshunter.io/developer/1884186063) |

## What reviewers say

### Big binary clock

[App page](https://appshunter.io/ios/app/big-binary-clock/id572188132)

This app displays the current time using binary code. Customize the appearance with different LED shapes, colors, and brightness levels. It offers a unique way to view time for tech enthusiasts.

**Highlights:** Binary time display, Round LED option, Square LED option, Geek mode, Customizable colors, Adjustable brightness

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

**In-app purchases:** none


### Echo

[App page](https://appshunter.io/ios/app/echo-anniversary/id6760383873)

This app helps you track important dates like anniversaries and manage daily notes. It offers local reminders, diary entries with moods, and a "On This Day" feature to revisit past memories. The minimalist design keeps everything private and on your device.

**Highlights:** Anniversary and countdown tracking, Local reminders, Diary entries with moods, On This Day flashbacks, Privacy-first local storage, PDF export of diary

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

**In-app purchases:** none


## Frequently asked questions

### Is Big binary clock free?

Big binary clock costs $0.99, with no in-app purchases.

### Is Echo free?

Echo costs $0.99, with no in-app purchases.

### Do Big binary clock or Echo have ads?

Neither Big binary clock nor Echo shows ads.

### Which is updated more often, Big binary clock or Echo?

Big binary clock ships an update every 13 months, and Echo every 3 months. Most recently, Big binary clock was updated on September 24, 2026 and Echo on September 21, 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.*