Comparison

Nan Nan Drill vs こどもクロック2

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

Head to head
About

Nan Nan Drill

Features
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"Nan Nan Drill" is calculated drill that you can repeat the basic learning addition , subtraction , multiplication , division of . Of course , practice ninety-nine , division that much , calculation of negative to learn from middle school students is also possible the calculation of single-digit to learn in first grade . It is capable of operating applications iPhone, only on the iPad . It is displayed in the bar at the top of the screen question appears one by one question , or how much advanced , which way it is how much remains . After you answer all questions , it is possible to review , you can check the answer again . When you do the scoring , problem - score - answer time and answer time score is displayed, and the answer was in the past history can view . * I can set the question as their favorite . - Can number up to four orders of magnitude can be set , to challenge to challenge yourself - Set the calculation questions such as "I want to display only division " , to be displayed - 1-100 questions to freely set the number of questions - Set the calculation of negative ( minus) - Select the grade as a user , can be switched the Chinese characters of the question

About

こどもクロック2

This app helps children learn to tell time with interactive clock faces and engaging quizzes. It offers multiple modes for hands-on exploration, reading practice, and time-setting challenges. The app can also function as a digital desk clock.

Highlights
  • Interactive clock faces
  • Time-telling quizzes
  • Adjustable clock hands
  • Digital desk clock mode
  • Multiple learning modes
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時計を勉強する子ども向けのアプリです。 数字だけの通常の文字盤と学習向けの文字盤に切り替えることができます。 こどもクロックには大きく5つのモードがあります 【さわってみよう】 時計を自由に触って、時計の動きを学ぶことができます。 【よもう】 文字盤の針を読む時計クイズです。 【あわせよう】 指定の時間に時計を合わせるクイズです。 【すすめよう・もどそう】 文字盤の針を、指定の時間進めたり戻したりするクイズです。 【時計モード】 トップページの時計をタップすると、時計モードになります。端末の向きに合わせて時計が回転するので、置時計として利用できます。

Screenshots

Nan Nan Drill4 screens
こどもクロック24 screens

Verdict

The call

The clearest difference is price: Nan Nan Drill at Free against こどもクロック2's $0.49. Nan Nan Drill also leads on iOS requirement (9.3 vs 12.0). On update cadence, 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

Nan Nan Drill is free to download; こどもクロック2 costs $0.49 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Nan Nan Drill ships an update every 12 months, こどもクロック2 every 15 months. The most recent releases landed on October 26, 2026 and November 2, 2026 respectively.

Scorecard2 real differences · 7 level
Nan Nan Drill versus こどもクロック2: the parameters behind the verdict, then further details
ParameterNan Nan Drillこどもクロック2
PriceFree — better$0.49
Rating—5.0 (1 ratings) — better
Number of ratings—1 — better
Update frequencyEvery 12 months — betterEvery 15 months
AdsNoNo
In-app purchasesNoNo
Monetization—Paid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS9.3 — better12.0
Further details — not scored
Size11 MB37 MB
Age rating4+4+
DeveloperDREAM ON LINE CO., LTD.Kouichi INAFUKU

In-app purchases

None

Nan Nan Drill

No in-app purchases

None

こどもクロック2

No in-app purchases

Questions

Is Nan Nan Drill free?
Nan Nan Drill is free to download, with no in-app purchases.
Is こどもクロック2 free?
こどもクロック2 costs $0.49, with no in-app purchases.
Do Nan Nan Drill or こどもクロック2 have ads?
Neither Nan Nan Drill nor こどもクロック2 shows ads.
Which is updated more often, Nan Nan Drill or こどもクロック2?
Nan Nan Drill ships an update every 12 months, and こどもクロック2 every 15 months. Most recently, Nan Nan Drill was updated on October 26, 2026 and こどもクロック2 on November 2, 2026.

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