# Contour Detection vs Blaupunkt 1D

The clearest difference is ads: Blaupunkt 1D at none against Contour Detection's shown. Blaupunkt 1D also leads on update cadence (every 2 days vs fortnightly) and iOS requirement (11.0 vs 17.7.2). On price, in-app purchases and device support there is nothing between them.

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

Contour Detection ships an update fortnightly, Blaupunkt 1D every 2 days. The most recent releases landed on October 15, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Contour Detection | Blaupunkt 1D |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Fortnightly | **Every 2 days** |
| Size | 36 MB | 9 MB |
| Requires iOS | 17.7.2 | **11.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Hideaki Uchikoshi](https://appshunter.io/developer/1559575002) | [Blapac Sdn Bhd](https://appshunter.io/developer/1267753574) |

## What reviewers say

### Contour Detection

[App page](https://appshunter.io/ios/app/contour-detection/id6511213082)

**Features:** macOS Compatibility

**In-app purchases:** none


### Blaupunkt 1D

[App page](https://appshunter.io/ios/app/blaupunkt-1d/id6529546499)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Contour Detection free?

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

### Is Blaupunkt 1D free?

Blaupunkt 1D is free to download, with no in-app purchases.

### Do Contour Detection or Blaupunkt 1D have ads?

Contour Detection shows ads; Blaupunkt 1D does not.

### Which is updated more often, Contour Detection or Blaupunkt 1D?

Contour Detection ships an update fortnightly, and Blaupunkt 1D every 2 days. Most recently, Contour Detection was updated on October 15, 2026 and Blaupunkt 1D on October 14, 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.*