# CLRS.Helper[Lite] vs Shor's algorithm

The clearest difference is in-app purchases: CLRS.Helper[Lite] at none against Shor's algorithm's 3. CLRS.Helper[Lite] also leads on update cadence (every 3 months vs every 6 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Shor's algorithm sells 3 one-off in-app purchases. CLRS.Helper[Lite] asks for nothing beyond the download.

CLRS.Helper[Lite] ships an update every 3 months, Shor's algorithm every 6 months. The most recent releases landed on October 8, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | CLRS.Helper[Lite] | Shor's algorithm |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 6 months |
| Size | 27 MB | 7 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [巍 顾](https://appshunter.io/developer/1368599824) | [Sungjun Kim](https://appshunter.io/developer/1602461985) |

## What reviewers say

### CLRS.Helper[Lite]

[App page](https://appshunter.io/ios/app/clrshelperlite/id1566475953)

**Features:** macOS Compatibility

**In-app purchases:** none


### Shor's algorithm

[App page](https://appshunter.io/ios/app/shors-algorithm/id6472044082)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| coffee | $0.99 | one-time |
| latte | $4.99 | one-time |
| whopper set | $9.99 | one-time |


## Frequently asked questions

### Is CLRS.Helper[Lite] free?

CLRS.Helper[Lite] is free to download, with no in-app purchases.

### Is Shor's algorithm free?

Shor's algorithm is free to download, with in-app purchases available.

### Do CLRS.Helper[Lite] or Shor's algorithm have ads?

Neither CLRS.Helper[Lite] nor Shor's algorithm shows ads.

### Which is updated more often, CLRS.Helper[Lite] or Shor's algorithm?

CLRS.Helper[Lite] ships an update every 3 months, and Shor's algorithm every 6 months. Most recently, CLRS.Helper[Lite] was updated on October 8, 2026 and Shor's algorithm on October 10, 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.*