Big binary clock vs Echo
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Big binary clock
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.
- Binary time display
- Round LED option
- Square LED option
- Geek mode
- Customizable colors
- Adjustable brightness
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Big Binary clock is a engaging innovation that does exactly what you'd expect a Binary Clock to do - it tells the time in Binary format. Options: -Round LED's -Square LED's -Geek mode -Show time (on / off) -Auto lock (on / off) -time format (12 / 24 ) -All colors (swipe right, left for change colors) -Brightness (swipe up, down for change brightness) -Tap for hide help numbers
Echo
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.
- Anniversary and countdown tracking
- Local reminders
- Diary entries with moods
- On This Day flashbacks
- Privacy-first local storage
- PDF export of diary
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Echo Days is a paid minimalist app for anniversaries, daily notes, and memory review. There are no ads, no in-app purchases, no accounts, and no cloud sync. Everything stays on your device. With Echo Days, you can manage count-up days, countdowns, and anniversary dates, set local reminders, write lightweight diary entries with moods, and revisit old memories through On This Day. Version 2.0 now organizes the experience into four focused tabs: Anniversaries, Diary, Insights, and Settings. Main features: - Manage count-up, countdown, and anniversary events - Local reminders with custom time and lead days - Diary notes with event links, mood tags, search, and filters - Export the current diary view as a PDF notebook - Insights for event distribution, writing activity, mood trends, and next actions - On This Day flashbacks from previous years - Privacy-first local storage with no content upload If you want one calm, long-term app for anniversaries and private notes instead of separate countdown and diary tools, Echo Days is built to keep those moments together.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Big binary clock | Echo |
|---|---|---|
| Price | $0.99 | $0.99 |
| Rating | 4.6 (5 ratings) — better | — |
| Positive reviews | 50.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 5 — better | — |
| Update frequency | Every 13 months | Every 3 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 14.4 — better | 18.6 |
| Further details — not scored | ||
| Size | 2 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Alexander Rutkowskij | 鹏 杨 |
Customer experience
Big binary clock
Echo
In-app purchases
Big binary clock
No in-app purchases
Echo
No in-app purchases
