# PRIME DROP — Endless prime factor puzzle

> Endless prime factor puzzle (iPhone/iPad app by KANTA KOKONNO.)

- Source: https://appshunter.io/ios/app/prime-drop/id6805800981 (this page in markdown: same URL + `.md`)
- Developer: [KANTA KOKONNO](https://appshunter.io/developer/6800746480)
- Category: Games, Education, Casual, Puzzle
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 17.0 · 4 MB
- Languages: American English, Japanese
- Released: 2026-10-02
- Data updated: 2026-10-09
- User reviews in markdown: https://appshunter.io/ios/app/prime-drop/id6805800981/reviews.md

## What is PRIME DROP?

Divide the falling numbers by primes until they disappear.

An 84 lands. Tap 2 → 2 → 3 → 7.
The instant it reaches 1, the tile is gone.

■ This is not a math drill
It is a board management puzzle. Which number do you attack first? Which tiles do you clear together? When do you deal with the expensive large primes? Guess wrong and the board chokes.

■ Divide them together
Tiles that share a prime factor can be selected and divided in one move. Three at once scores nine times as much. Spotting shared factors across the whole board is what separates an expert from a beginner.

■ A miss will not kill you outright
Press a prime that does not divide and the board rises. One mistake is not the end. The pressure builds, and pulling a collapsing board back from the edge is the best feeling in the game.

■ Go for the perfect clear
Wipe the board completely for a huge bonus. The difficulty does not increase, so it is a pure reward.

■ You can feel yourself improving
At first, 84 stops you cold. After a while, 2² × 3 × 7 appears instantly. That difference becomes your score.

- A few minutes per run, one-handed
- Ads are kept light, and a one-time purchase removes them for good
- Game Center leaderboard supported

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |



## Version history (last 1 release)

### 1.0 — 2026-10-02

No release notes.

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## More apps by KANTA KOKONNO

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- [もやし。− スマホを置くほど育つ](https://appshunter.io/ios/app/id6801805442)
- [MATE − スワイプで整理するタスク管理アプリ](https://appshunter.io/ios/app/mate/id6805945614)

All apps by KANTA KOKONNO: https://appshunter.io/developer/6800746480

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-09.*