# Sync vs P=NP

The clearest difference is price: P=NP at Free against Sync's $0.99. P=NP also leads on rating (5.0 vs 4.8). Sync's advantage is in-app purchases (none vs 6) and ads (none vs shown). On review sentiment, update cadence, device support and iOS requirement there is nothing between them.

P=NP is free to download; Sync costs $0.99 up front. P=NP sells 6 one-off in-app purchases. Sync asks for nothing beyond the download.

P=NP holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Sync has 33 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 97% of Sync's written reviews are positive against 100% of P=NP's.

Sync ships an update every 40 months, P=NP every 28 months. The most recent releases landed on September 10, 2026 and June 2, 2026 respectively.

## The numbers

| Metric | Sync | P=NP |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | [4.8 (33 ratings)](https://appshunter.io/ios/app/sync-ball/id356277312/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/pnp/id1437987800/reviews)** |
| Number of ratings | **33** | 3 |
| Positive reviews | 96.8% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 40 months | **Every 28 months** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 9 MB | 74 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Tozai, Inc.](https://appshunter.io/developer/356277315) | [Ken L'Heritier](https://appshunter.io/developer/1437987799) |

## What reviewers say

### Sync

[App page](https://appshunter.io/ios/app/sync-ball/id356277312)

Engage your mind with a unique puzzle experience where you guide synchronized balls to designated holes using simple swipes. Navigate through increasingly complex mazes, strategically using walls to achieve your goals. Enjoy a tranquil yet stimulating challenge with 80 levels, designed for thoughtful problem-solving without time pressure.

**Highlights:** Swipe to move synchronized balls, Align balls into holes, Use maze walls for strategy, Avoid falling off the platform, Progress through 80 levels, No time limits or scores, Develop concentration and problem-solving skills

**Features:** macOS Compatibility

**In-app purchases:** none


### P=NP

[App page](https://appshunter.io/ios/app/pnp/id1437987800)

Connect dots to find the shortest path in a puzzle game where the world wraps around. Use hints to guide your progress or purchase them to extend your gameplay. Unlock new challenges by completing levels.

**Highlights:** Dot-connecting puzzles, Wrapping world mechanic, Hint system, In-app shop for hints, Unlockable random puzzles, Device-adaptive puzzles

**Features:** macOS Compatibility

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 10 hints | $0.99 | one-time |
| Remove ads | $1.99 | one-time |
| 50 hints | $3.99 | one-time |
| 120 hints | $8.99 | one-time |
| 250 hints | $16.99 | one-time |
| Unlimited hints | $42.99 | one-time |


## Frequently asked questions

### Is Sync free?

Sync costs $0.99, with no in-app purchases.

### Is P=NP free?

P=NP is free to download, with in-app purchases available.

### Which has better reviews, Sync or P=NP?

P=NP is rated higher. Sync averages 4.8 out of 5 from 33 ratings, while P=NP averages 5.0 from 3 ratings.

### Do Sync or P=NP have ads?

P=NP shows ads; Sync does not.

### Which is updated more often, Sync or P=NP?

Sync ships an update every 40 months, and P=NP every 28 months. Most recently, Sync was updated on September 10, 2026 and P=NP on June 2, 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.*