# BUNKAI vs SpotMaster

The clearest difference is in-app purchases: BUNKAI at none against SpotMaster's 5. BUNKAI also leads on update cadence (every 2 months vs every 11 months) and iOS requirement (11.0 vs 15.0). On price, ads and device support there is nothing between them.

Both are free to download. SpotMaster sells 5 one-off in-app purchases. BUNKAI asks for nothing beyond the download.

BUNKAI ships an update every 2 months, SpotMaster every 11 months. The most recent releases landed on October 6, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | BUNKAI | SpotMaster |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (2 ratings)](https://appshunter.io/ios/app/bunkai/id1518757863/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 12.5% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 2 months** | Every 11 months |
| Monetization | Ad-supported | — |
| Size | 114 MB | 207 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [ZERONE](https://appshunter.io/developer/1708775781) | [73ers](https://appshunter.io/developer/318506527) |

## What reviewers say

### BUNKAI

[App page](https://appshunter.io/ios/app/bunkai/id1518757863)

A brain-training puzzle game where players break down numbers until they reach one. It uses prime factorization to defeat monsters, making learning math fun and engaging. Enjoy a simple yet addictive experience that boosts your calculation skills.

**Highlights:** Number decomposition puzzles, Prime factorization mechanics, Monster-battling gameplay, Calculation skill training, Simple tap controls, Addictive brain training

**Features:** macOS Compatibility

**In-app purchases:** none


### SpotMaster

[App page](https://appshunter.io/ios/app/spotmaster-wordbuilder/id6736932754)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Starter Pack | $1.99 | one-time |
| Remove Ads | $4.99 | one-time |
| Explorer Pack | $8.99 | one-time |
| Master Pack | $24.99 | one-time |
| Legend Pack | $59.99 | one-time |


## Frequently asked questions

### Is BUNKAI free?

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

### Is SpotMaster free?

SpotMaster is free to download, with in-app purchases available.

### Do BUNKAI or SpotMaster have ads?

Both BUNKAI and SpotMaster show ads.

### Which is updated more often, BUNKAI or SpotMaster?

BUNKAI ships an update every 2 months, and SpotMaster every 11 months. Most recently, BUNKAI was updated on October 6, 2026 and SpotMaster on October 13, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*