# phase estimation algorithm vs Quantum Computing

The clearest difference is in-app purchases: phase estimation algorithm at none against Quantum Computing's 1. Quantum Computing's advantage is update cadence (daily vs monthly) and device support (4 vs 2). On price, ads and iOS requirement there is nothing between them.

Both are free to download. Quantum Computing sells 1 one-off in-app purchase. phase estimation algorithm asks for nothing beyond the download.

phase estimation algorithm ships an update monthly, Quantum Computing daily. The most recent releases landed on September 15, 2026 and September 12, 2026 respectively.

## The numbers

| Metric | phase estimation algorithm | Quantum Computing |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Daily** |
| Size | 12 MB | 2 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | iPhone, iPad | **iPhone, iPad, Mac, Vision Pro** |
| Age rating | 4+ | 4+ |
| Developer | [Sungjun Kim](https://appshunter.io/developer/1602461985) | [Everyware Apps](https://appshunter.io/developer/718530491) |

## What reviewers say

### phase estimation algorithm

[App page](https://appshunter.io/ios/app/phase-estimation-algorithm/id6469448415)

**Features:** macOS Compatibility

**In-app purchases:** none


### Quantum Computing

[App page](https://appshunter.io/ios/app/quantum-computing/id6523414226)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium features | $3.99 | one-time |


## Frequently asked questions

### Is phase estimation algorithm free?

phase estimation algorithm is free to download, with no in-app purchases.

### Is Quantum Computing free?

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

### Do phase estimation algorithm or Quantum Computing have ads?

Neither phase estimation algorithm nor Quantum Computing shows ads.

### Which is updated more often, phase estimation algorithm or Quantum Computing?

phase estimation algorithm ships an update monthly, and Quantum Computing daily. Most recently, phase estimation algorithm was updated on September 15, 2026 and Quantum Computing on September 12, 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.*