# QA² vs PlusFix

The clearest difference is in-app purchases: QA² at none against PlusFix's 3. QA² also leads on ads (none vs shown). PlusFix's advantage is update cadence (every 2 days vs every 3 weeks) and iOS requirement (13.0 vs 15.0). On price and device support there is nothing between them.

Both are free to download. PlusFix sells 3 one-off in-app purchases. QA² asks for nothing beyond the download.

QA² ships an update every 3 weeks, PlusFix every 2 days. The most recent releases landed on September 25, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | QA² | PlusFix |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 weeks | **Every 2 days** |
| Monetization | Free | — |
| Size | 180 MB | 40 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [TISI Incorporated](https://appshunter.io/developer/463993929) | [young jun Cho](https://appshunter.io/developer/1872351854) |

## What reviewers say

### QA²

[App page](https://appshunter.io/ios/app/qa/id6747648497)

Engage in a unique puzzle game set in the quantum world. Swipe and match colorful blocks to create satisfying chain reactions and master various game modes. Challenge AI opponents and compete on global leaderboards.

**Highlights:** Quantum-themed puzzle gameplay, Satisfying chain reaction system, Multiple game modes (Rush, Depth, Flow, Overload), VS AI mode with challenging opponents, Global leaderboards for competitive play, Brain training mechanics

**In-app purchases:** none


### PlusFix

[App page](https://appshunter.io/ios/app/plusfix/id6758336687)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited ZeroPoint | $3.99 | one-time |
| Ad-Free Experince | $5.99 | one-time |
| Full Level Access | $7.99 | one-time |


## Frequently asked questions

### Is QA² free?

QA² is free to download, with no in-app purchases.

### Is PlusFix free?

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

### Do QA² or PlusFix have ads?

PlusFix shows ads; QA² does not.

### Which is updated more often, QA² or PlusFix?

QA² ships an update every 3 weeks, and PlusFix every 2 days. Most recently, QA² was updated on September 25, 2026 and PlusFix on October 7, 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.*