# KnowLedge Alarm vs Placer 3D

The clearest difference is in-app purchases: KnowLedge Alarm at none against Placer 3D's 5. KnowLedge Alarm also leads on iOS requirement (12.0 vs 18.0). Placer 3D's advantage is device support. On price there is nothing between them.

Both are free to download. Placer 3D sells 5 in-app purchases, starting at $9.99 per month. KnowLedge Alarm asks for nothing beyond the download.

## The numbers

| Metric | KnowLedge Alarm | Placer 3D |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/placer-3d/id6757216849/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | — | No |
| Update frequency | — | Daily |
| Monetization | — | Free with in-app purchases |
| Size | 172 MB | 389 MB |
| Requires iOS | **12.0** | 18.0 |
| Devices | — | **iPhone, iPad** |
| Age rating | 17+ | 9+ |
| Developer | [Beylerbeyi Genel Güvenlik Sistemleri Ltd.Şti.](https://appshunter.io/developer/1490993898) | [MECOSTECH YAZILIM TEKNOLOJİLERİ SANAYİ VE TİCARET AŞ](https://appshunter.io/developer/1844236835) |

## What reviewers say

### KnowLedge Alarm

[App page](https://appshunter.io/ios/app/knowledge-alarm/id6449666881)

**In-app purchases:** none


### Placer 3D

[App page](https://appshunter.io/ios/app/placer-3d/id6757216849)

Scan spaces and objects to create 3D models, plan rooms, and visualize items in AR at true scale. This app simplifies 3D content creation, layout, and sharing for various use cases like product previews and space planning.

**Highlights:** Object and space scanning for 3D model creation, Room planning with drag-and-drop model placement, True-scale AR visualization with light estimation, Manage and access all 3D content, Share 3D models via QR codes or web links, E-commerce product preview and presentation

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $9.99 | per month |
| Business Monthly | $59.99 | per month |
| Starter Boost | $5.99 | one-time |
| Growth Pack | $24.99 | one-time |
| Pro Campaign | $59.99 | one-time |


## Frequently asked questions

### Is KnowLedge Alarm free?

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

### Is Placer 3D free?

Placer 3D is free to download, with in-app purchases available.

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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.*