Comparison

Big binary clock vs Echo

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

Head to head
About

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.

Highlights
  • Binary time display
  • Round LED option
  • Square LED option
  • Geek mode
  • Customizable colors
  • Adjustable brightness
Features
Read full description

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

About

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.

Highlights
  • Anniversary and countdown tracking
  • Local reminders
  • Diary entries with moods
  • On This Day flashbacks
  • Privacy-first local storage
  • PDF export of diary
Features
Read full description

Echo Days is the quiet home for your time: anniversaries, a diary, private memos, and Insights in one app you buy once and keep forever. No ads, no subscriptions, no accounts, and no cloud — everything you write stays on your device. WHY PAY ONCE Free apps make you pay with attention and data. Echo keeps it simple: one purchase unlocks every feature, forever. No monthly fees, no tracking — the app works for you, not for advertisers. ANNIVERSARIES Count-up days, countdowns, and yearly anniversaries, calculated automatically. Custom icons and local reminders mean the moments that matter never slip by. DIARY Write short entries with mood tags, link them to events, find anything with search and filters, and export the whole notebook to PDF. MEMOS Accounts, cards, documents, and plain notes in one place. Custom rows, pinning, search, and one-tap copy put what you need at your fingertips. INSIGHTS & ON THIS DAY See how your records are distributed, how often you write, and how your mood shifts — then revisit past years, one day at a time. PRIVATE BY DESIGN No account, no sync, nothing uploaded. A gesture lock keeps the whole app to yourself. 7 languages, ready for iPhone Duo and iPad. One purchase, a companion for years. Give your memories one calm, complete home.

Screenshots

Big binary clock4 screens
Echo4 screens

Verdict

The call

The clearest difference is review sentiment: Echo at 100% against Big binary clock's 50%. Echo also leads on update cadence (every 6 weeks vs every 13 months). Big binary clock's advantage is price ($0.99 vs $3.99) and iOS requirement (14.4 vs 18.6). On ads, in-app purchases, monetization model 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

CostPrice · In-app purchases · Ads · Monetization

Big binary clock costs $0.99 and Echo $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Big binary clock ships an update every 13 months, Echo every 6 weeks. The most recent releases landed on November 1, 2026 and November 5, 2026 respectively.

Scorecard4 real differences · 6 level
Big binary clock versus Echo: the parameters behind the verdict, then further details
ParameterBig binary clockEcho
Price$0.99 — better$3.99
Rating4.6 (5 ratings) — better—
Positive reviews50.0% of reviews100.0% of reviews — better
Number of ratings5 — better—
Update frequencyEvery 13 monthsEvery 6 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS14.4 — better18.6
Further details — not scored
Size2 MB3 MB
Age rating4+4+
DeveloperAlexander Rutkowskij鹏 杨

Customer experience

Big binary clock

All ratings5 ratings
Positive80.0%
Neutral20.0%
Negative0.0%
Written reviews6 reviews
Positive50.0%
Neutral50.0%
Negative0.0%

Echo

Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Big binary clock

No in-app purchases

None

Echo

No in-app purchases

Questions

Is Big binary clock free?
Big binary clock costs $0.99, with no in-app purchases.
Is Echo free?
Echo costs $3.99, 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 6 weeks. Most recently, Big binary clock was updated on November 1, 2026 and Echo on November 5, 2026.

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