Mastermind vs ArcSync
Price, ratings, monetisation and update history for both games, side by side ā with what reviewers say about each.
Mastermind
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Bulls and Cows is a single-player logic game: guess the secret number before time runs out. Digits never repeat. After each guess you get hints. The app uses the Spanish terms Fija and Pica in every language: ⢠Fija (bull): the digit is in the secret number and in the correct position. ⢠Pica (cow): the digit is in the number, but in the wrong position. Choose one of four levels: ⢠Easy: 3 digits, 3 minutes. ⢠Medium: 4 digits, 3 minutes. ⢠Hard: 5 digits, 4 minutes. ⢠Extreme: 6 digits, 5 minutes. There is no attempt limit: you win by cracking the code and lose only when the timer hits zero. Unlock 8 achievements for speed, precision, and difficulty. Progress is stored on your device. The app includes in-game rules, needs no account, and does not connect to our own servers. Free, with no ads and no in-app purchases. Questions? Write to hello@kurubatech.com.
ArcSync
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ArcSync: Reflex Puzzle is a fast-paced reflex and timing game designed to challenge your focus, precision, and reaction speed. Tap the target at the right moment, keep your rhythm, and progress through increasingly demanding levels. Simple to learn but difficult to master, ArcSync is built for quick sessions and repeat play. Features: ⢠Fast reflex-based gameplay ⢠Simple one-touch controls ⢠Increasing difficulty ⢠Clean and minimal visual design ⢠Designed for both iPhone and iPad ⢠Quick sessions you can play anytime How far can your reflexes take you?
Screenshots
Verdict
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.
Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS
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.
| Parameter | Mastermind | ArcSync |
|---|---|---|
| Price | Free | Free |
| Update frequency | Monthly | Daily ā better |
| Ads | No ā better | Yes |
| In-app purchases | No ā better | Yes |
| Devices | iPhone, iPad, iPod ā better | iPhone, iPad |
| Requires iOS | 15.0 ā better | 16.0 |
| Further details ā not scored | ||
| Size | 21 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | Kuruba Tech | Mustafa Ofluoglu |
In-app purchases
Mastermind
No in-app purchases
ArcSync
- 25 Lives$4.99
- 100 Lives$6.99
- Remove Ads$7.99
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- 300 Lives$9.99









