# Mastermind vs ArcSync

The clearest difference is in-app purchases: Mastermind at none against ArcSync's 4. Mastermind also leads on ads (none vs shown). ArcSync's advantage is update cadence (daily vs monthly). On price, device support and iOS requirement there is nothing between them.

Both are free to download. ArcSync sells 4 one-off in-app purchases. Mastermind asks for nothing beyond the download.

Mastermind ships an update monthly, ArcSync daily. The most recent releases landed on October 31, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | Mastermind | ArcSync |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Monthly | **Daily** |
| Size | 21 MB | 7 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Kuruba Tech](https://appshunter.io/developer/1896363386) | [Mustafa Ofluoglu](https://appshunter.io/developer/6794329369) |

## What reviewers say

### Mastermind

[App page](https://appshunter.io/ios/app/mastermind-bulls-and-cows/id6809059620)

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

**In-app purchases:** none


### ArcSync

[App page](https://appshunter.io/ios/app/arcsync-reflex-puzzle/id6811948410)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 25 Lives | $4.99 | one-time |
| 100 Lives | $6.99 | one-time |
| Remove Ads | $7.99 | one-time |
| 300 Lives | $9.99 | one-time |


## Frequently asked questions

### Is Mastermind free?

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

### Is ArcSync free?

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

### Do Mastermind or ArcSync have ads?

ArcSync shows ads; Mastermind does not.

### Which is updated more often, Mastermind or ArcSync?

Mastermind ships an update monthly, and ArcSync daily. Most recently, Mastermind was updated on October 31, 2026 and ArcSync on November 6, 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.*