# TapDrop vs Quantum Number Lock

The clearest difference is ads: Quantum Number Lock at none against TapDrop's shown. Quantum Number Lock also leads on update cadence (every 9 days vs every 2 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

TapDrop ships an update every 2 months, Quantum Number Lock every 9 days. The most recent releases landed on November 8, 2026 and November 9, 2026 respectively.

## The numbers

| Metric | TapDrop | Quantum Number Lock |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 9 days** |
| Size | 25 MB | 7 MB |
| Requires iOS | 15.0 | 15 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Kouki Saito](https://appshunter.io/developer/912099331) | [特 郑](https://appshunter.io/developer/1881393610) |

## What reviewers say

### TapDrop

[App page](https://appshunter.io/ios/app/tapdrop-block-puzzle/id6748759885)

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

**In-app purchases:** none


### Quantum Number Lock

[App page](https://appshunter.io/ios/app/quantum-number-lock/id6760518803)

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

**In-app purchases:** none


## Frequently asked questions

### Is TapDrop free?

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

### Is Quantum Number Lock free?

Quantum Number Lock is free to download, with no in-app purchases.

### Do TapDrop or Quantum Number Lock have ads?

TapDrop shows ads; Quantum Number Lock does not.

### Which is updated more often, TapDrop or Quantum Number Lock?

TapDrop ships an update every 2 months, and Quantum Number Lock every 9 days. Most recently, TapDrop was updated on November 8, 2026 and Quantum Number Lock on November 9, 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.*