Comparison

Focus vs Mental arithmetic quiz

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

Head to head

TimeOwner

Mental arithmetic quiz

test your mental arithmetic

Free

🔧 Utilities

No ratingsView app →

About

Focus

Features

Read full description

Focus-timeowner: Record your focus moment Main: Customized focused projects, quick start, etc Statistics: record historical focus, help you recall your focus moment If you have problems using it, please contact me with the following email. E-mail: chenyun008qq@gmail.com

About

Mental arithmetic quiz

Features

Read full description

Results: Statistics and display of results based on different users (local user roles), the total number of practice questions + the number of correct questions + the number of errors + the number that will be completed in the future, as well as the stars you have obtained and the achievements you have achieved; Challenge: quick start; addition operation; subtraction operation; multiplication operation; division operation; endless challenge; Question Bank: (Question Bank Settings) Configure configuration settings for various calculations and customize quizzes that suit you;

Screenshots

Focus3 screens

Mental arithmetic quiz4 screens

Verdict

The call

The clearest difference is update cadence: Mental arithmetic quiz at every 8 days against Focus's every 4 months. On price, ads, in-app purchases 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

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

UpkeepUpdate frequency

Focus ships an update every 4 months, Mental arithmetic quiz every 8 days. Both last shipped on October 27, 2026.

Scorecard1 real difference · 5 level

Focus versus Mental arithmetic quiz: the parameters behind the verdict, then further details
Parameter	Focus	Mental arithmetic quiz
Price	Free	Free
Update frequency	Every 4 months	Every 8 days — better
Ads	No	No
In-app purchases	No	No
Devices	iPhone, iPad, iPod	iPhone, iPad, iPod
Requires iOS	11.0 — better	12.1
Further details — not scored
Size	56 MB	38 MB
Age rating	4+	4+
Developer	Yun Chen	LiRen Sun

In-app purchases

None

Focus

No in-app purchases

None

Mental arithmetic quiz

No in-app purchases

Questions

Is Focus free?

Focus is free to download, with no in-app purchases.

Is Mental arithmetic quiz free?

Mental arithmetic quiz is free to download, with no in-app purchases.

Do Focus or Mental arithmetic quiz have ads?

Neither Focus nor Mental arithmetic quiz shows ads.

Which is updated more often, Focus or Mental arithmetic quiz?

Focus ships an update every 4 months, and Mental arithmetic quiz every 8 days. Most recently, Focus was updated on October 27, 2026 and Mental arithmetic quiz on October 27, 2026.