Comparison

Prime Factorization vs Flash Anzan

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

Head to head
About

Prime Factorization

This game challenges you to break down numbers into their prime factors until you reach one. It offers a simple yet engaging way to exercise your brain through number manipulation.

Highlights
  • Number factorization gameplay
  • Objective: reduce number to 1
  • Brain training exercises
  • Simple mechanics
Features
Read full description

This app is "Brain training game". How to play is simple,divide the number displayed. Make the number to be "1". director App Kaihatsu Man music 魔王魂 Coding:アプリ開発マン

About

Flash Anzan

Features
Read full description

Numbers flash for an instant, then vanish. Add them in your head. Flash anzan practice built on the Japanese soroban grading standards — useful whichever abacus programme you study under. 40 LEVELS Level 1 to Level 40. Every level states exactly what it is: 2 digits × 5 terms · 8s, and so on. Digits, terms and timing come from the official Japanese grading standards, so the ladder is real rather than invented. Get 7 of 10 to pass, 5 or 6 for a near pass. PRACTICE — your own settings 1 to 5 digits, 2 to 30 terms, 0.05 to 5.0 seconds per term. The slow end really does go to 5 seconds, so beginners fit too. Subtraction and comma separators are optional. ONE-MINUTE DRILL How many can you answer in 60 seconds? Addition, subtraction, multiplication and division. Just tap the answer. HOW TO Four short lessons on what abacus classrooms actually teach: why words are too slow, the pairs that make 5 and 10, how to move the abacus into your head, and what to raise in what order. BREAD COUNT — a break Count loaves instead of digits. 20 stages, 24 kinds of bread to collect. DIGITS THAT LOOK RIGHT The numbers use the handwritten forms taught in abacus classrooms, not a generic typeface. If you have studied soroban, they will look familiar. ADS No ads at all while a problem is on screen. They appear only between sessions, limited by both count and time. IN-APP PURCHASE A one-time purchase removes the ads. Pay once; nothing renews. Use "Restore purchase" when you change devices. Every mode stays free. Problems are never behind a paywall. RECORDS Every answer is written to the device immediately, so a crash never loses your progress. Privacy Policy https://tomople.com/privacy-policy/

Screenshots

Prime Factorization4 screens
Flash Anzan4 screens

Verdict

The call

The clearest difference is in-app purchases: Prime Factorization at none against Flash Anzan's 1. Prime Factorization also leads on ads (none vs shown) and update cadence (every 6 weeks vs every 3 months). On price 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. Flash Anzan sells 1 one-off in-app purchase. Prime Factorization asks for nothing beyond the download.

UpkeepUpdate frequency

Prime Factorization ships an update every 6 weeks, Flash Anzan every 3 months. The most recent releases landed on November 2, 2026 and November 8, 2026 respectively.

Scorecard4 real differences · 6 level
Prime Factorization versus Flash Anzan: the parameters behind the verdict, then further details
ParameterPrime FactorizationFlash Anzan
PriceFreeFree
Rating2.5 (4 ratings) — better—
Positive reviews66.7% of reviews—
Number of ratings4 — better—
Update frequencyEvery 6 weeks — betterEvery 3 months
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS7.1 — better15.0
Further details — not scored
Size22 MB50 MB
Age rating4+4+
DeveloperNAKAYUBI CORPORATIONtomople

In-app purchases

None

Prime Factorization

No in-app purchases

1 purchases

Flash Anzan

One-time1
  • Remove Ads$1.99

Questions

Is Prime Factorization free?
Prime Factorization is free to download, with no in-app purchases.
Is Flash Anzan free?
Flash Anzan is free to download, with in-app purchases available.
Do Prime Factorization or Flash Anzan have ads?
Flash Anzan shows ads; Prime Factorization does not.
Which is updated more often, Prime Factorization or Flash Anzan?
Prime Factorization ships an update every 6 weeks, and Flash Anzan every 3 months. Most recently, Prime Factorization was updated on November 2, 2026 and Flash Anzan on November 8, 2026.

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