Comparison

Binary Clock Time vs Extreme Addition

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

Head to head
About

Binary Clock Time

This application displays the current time using a binary format represented by changing shades of blue circles. It includes a tutorial to help users learn how to read binary time quickly.

Highlights
  • Binary time display
  • Color customization
  • Built-in tutorial
  • Watch app support
Features
Read full description

This is the most awsomest Binary Clock. It features circles that change from one shade of blue to another which indicate the time. It can be a challenge for some people to master reading binary time but with the tutorial on the information page in this app you'll be reading it in no time. Features -Change colour of circles. -Tells the time! -Watch app

About

Extreme Addition

Read full description

Extreme Addition® is a unique and extraordinarily simple game that takes you into the world of extreme additions. You will love this game. You will boost your mental calculation and your mastery of numbers. You will gain speed of execution and reasoning. You will create automatisms. You will boost your concentration and motivation. You will gain confidence in yourself. You will not waste your time. Are you ready? So let's go! In this 3-level game, two numbers are presented to you each turn. There are 10 rounds in a game and your time is timed and saved if you have 10/10. You must add these two numbers in an extreme way. You give your answer by pressing one of the 9 digits. The answer is always a number between 1 and 9. At level 1, the two numbers presented are between 1 and 10. (8 + 7) is equal to 6 in the world of Extreme Addition®. Why? Because (8 + 7) = 15, then you separate 15 into (1 + 5) = 6 At level 2, the two numbers presented are between 10 and 99. (28 + 32) is equal to 6 in the world of Extreme Addition®. Why? Because (28 + 32) = 60, then you separate 60 into (6 + 0) = 6 At level 3, the two numbers presented are between 100 and 999. (102 + 108) is equal to 3 in the world of Extreme Addition®. Why? Because (102 + 108) = 210, then you separate 210 into (2 + 1 + 0) = 3 Will you take up the challenge? Mental arithmetic is the daily maintenance of all your mental faculties! Here are some tips to save time in your extreme additions: Tip 1 The result of adding a two-digit number with 9 is quickly obtained from this number as follows: - The number of units minus 1. - The tens digit plus 1. Examples: (25 + 9) = 34 (46 + 9) = 55 (78 + 9) = 87 Tip 2 The result of the extreme addition of 9 with any number from 1 to 9 equals that number. Examples: (4 + 9) => 4 because (4 + 9) = 13 and (1 + 3) = 4 (2 + 9) => 2 because (2 + 9) = 11 and (1 + 1) = 2 (7 + 9) => 7 because (7 + 9) = 16 and (1 + 6) = 7 (9 + 9) => 9 because (9 + 9) = 19 and (1 + 8) = 9 Tip 3 It is faster to add 245 + 637 to the extreme by doing 2 + 4 + 5 + 6 + 3 + 7. Tip 4 Try to get a maximum of 9 in the longest additions, in order to apply tip # 2. Here are all the additions to get the number 9: 1 + 8 = 9 2 + 7 = 9 3 + 6 = 9 4 + 5 = 9 Tip 5 Learn by heart your addition tables, so you no longer have to rely on your fingers to find the result! Lol. 7 + 5 = 12 8 + 4 = 12 6 + 7 = 13 8 + 5 = 13 8 + 6 = 14 7 + 8 = 15 etc ... Be positive, combative, don't give up after a single game, have fun and progress. (This game is available for WatchOS, iOS, MacOS and Apple TV)

Screenshots

Binary Clock Time2 screens
Extreme Addition4 screens

Verdict

The call

The clearest difference is ads: Extreme Addition at none against Binary Clock Time's shown. Extreme Addition also leads on update cadence (every 3 weeks vs every 13 months) and device support (6 vs 3). On price, in-app purchases and iOS requirement 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

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Binary Clock Time ships an update every 13 months, Extreme Addition every 3 weeks. The most recent releases landed on September 28, 2026 and September 24, 2026 respectively.

Scorecard3 real differences · 7 level
Binary Clock Time versus Extreme Addition: the parameters behind the verdict, then further details
ParameterBinary Clock TimeExtreme Addition
PriceFreeFree
Rating4.6 (34 ratings) — better—
Positive reviews75.5% of reviews—
Number of ratings34 — better—
Update frequencyEvery 13 monthsEvery 3 weeks — better
AdsYesNo — better
In-app purchasesNoNo
MonetizationAd-supported—
DevicesiPhone, iPad, Apple WatchiPhone, iPad, iPod, Mac, Apple TV, Apple Watch — better
Requires iOS16.015.6 — better
Further details — not scored
Size4 MB65 MB
Age rating4+4+
DeveloperAaron F StephensonBARTOLI JOHAN

In-app purchases

None

Binary Clock Time

No in-app purchases

None

Extreme Addition

No in-app purchases

Questions

Is Binary Clock Time free?
Binary Clock Time is free to download, with no in-app purchases.
Is Extreme Addition free?
Extreme Addition is free to download, with no in-app purchases.
Do Binary Clock Time or Extreme Addition have ads?
Binary Clock Time shows ads; Extreme Addition does not.
Which is updated more often, Binary Clock Time or Extreme Addition?
Binary Clock Time ships an update every 13 months, and Extreme Addition every 3 weeks. Most recently, Binary Clock Time was updated on September 28, 2026 and Extreme Addition on September 24, 2026.

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