Comparison

びっくりアプリ vs PrimeFactorizationGame

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

Head to head
About

びっくりアプリ

Features
Read full description

ボタンを押したら、ドッキリをかけられるアプリです。 ボタンを押すと骸骨が出現して、ユーザーを驚かせます。その時のiphoneの傾き具合をセンサによって、計測してビビり度を判定します ビビリ度とは、iPhoneのセンサで、iPhoneが、どれくらい傾いたかを計測し、その傾き具合によって、ビビリ度を三段階に判定します。 注意:使用するときは、iphoneの左側にあるサイレントスイッチをオフにしてください。(これをしなければ音が出ません)

About

PrimeFactorizationGame

Features
Read full description

Number meteors are coming! Break them apart with prime factorization! A brand-new brain training game that combines prime factorization with shooting action! Watch the number meteors falling from the sky, tap the correct prime number button, and fire your beam! Break down the numbers as fast as you can. The quicker you perform prime factorization, the faster the meteors shrink and eventually shatter! Train your calculation speed, mental math skills, and decision-making ability all at once. A full-fledged math and brain-training game that can be enjoyed by both kids and adults. [Features] ・Experience prime factorization like an action shooting game ・Quickly choose and destroy multiple falling meteors ・Difficulty levels from Beginner all the way to the super hard Oni mode ・Perfect for improving calculation skills, brain agility, and mental math ・Great for short brain-training sessions and math learning [Recommended for] ・Fans of math puzzles and number games ・Those who love brain training or calculation games ・Anyone who wants to improve their mental math speed ・Players who excel at fast-reaction games ・Parents looking for educational math games for kids Can your brain survive Oni mode? Aim to become the fastest prime factorization master!

Screenshots

びっくりアプリ3 screens
PrimeFactorizationGame3 screens

Verdict

The call

The clearest difference is price: PrimeFactorizationGame at Free against びっくりアプリ's $1.99. PrimeFactorizationGame also leads on update cadence (monthly vs every 4 months). びっくりアプリ's advantage is iOS requirement (14.2 vs 17.6). On 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

PrimeFactorizationGame is free to download; びっくりアプリ costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

びっくりアプリ ships an update every 4 months, PrimeFactorizationGame monthly. The most recent releases landed on June 19, 2026 and September 10, 2026 respectively.

Scorecard3 real differences · 6 level
びっくりアプリ versus PrimeFactorizationGame: the parameters behind the verdict, then further details
ParameterびっくりアプリPrimeFactorizationGame
Price$1.99Free — better
Rating1.0 (1 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings1 — better—
Update frequencyEvery 4 monthsMonthly — better
AdsYesYes
In-app purchasesNoNo
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS14.2 — better17.6
Further details — not scored
Size20 MB7 MB
Age rating9+4+
DeveloperYusaku FujitaTomatoAppLab

In-app purchases

None

びっくりアプリ

No in-app purchases

None

PrimeFactorizationGame

No in-app purchases

Questions

Is びっくりアプリ free?
びっくりアプリ costs $1.99, with no in-app purchases.
Is PrimeFactorizationGame free?
PrimeFactorizationGame is free to download, with no in-app purchases.
Do びっくりアプリ or PrimeFactorizationGame have ads?
Both びっくりアプリ and PrimeFactorizationGame show ads.
Which is updated more often, びっくりアプリ or PrimeFactorizationGame?
びっくりアプリ ships an update every 4 months, and PrimeFactorizationGame monthly. Most recently, びっくりアプリ was updated on June 19, 2026 and PrimeFactorizationGame on September 10, 2026.

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