# Archium vs Psychro Calc Pro

The clearest difference is in-app purchases: Archium at none against Psychro Calc Pro's 2. Psychro Calc Pro's advantage is update cadence (every 4 days vs every 3 weeks) and iOS requirement (15.0 vs 18.0). On price, ads and device support there is nothing between them.

Both are free to download. Psychro Calc Pro sells 2 in-app purchases, starting at $3.99 per month. Archium asks for nothing beyond the download.

Archium ships an update every 3 weeks, Psychro Calc Pro every 4 days. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Archium | Psychro Calc Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/archium-document-organizer/id6447586990/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 4 days** |
| Monetization | Free | — |
| Size | 21 MB | 23 MB |
| Requires iOS | 18.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Daniel Bazzani](https://appshunter.io/developer/1455749642) | [Mehmet Karakas](https://appshunter.io/developer/1886748581) |

## What reviewers say

### Archium

[App page](https://appshunter.io/ios/app/archium-document-organizer/id6447586990)

Effortlessly scan, organize, and manage your documents with intelligent analysis and automatic filing. Quickly find what you need with powerful search and Siri integration. Streamline workflows using app shortcuts and automation.

**Highlights:** Scan and import documents, Automatic document organization, Intelligent search and indexing, Siri integration for context-aware questions, App Intents & Shortcuts for automation, Secure on-device storage

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

**In-app purchases:** none


### Psychro Calc Pro

[App page](https://appshunter.io/ios/app/psychro-calc-pro/id6760909140)

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium | $3.99 | per month |
| Lifetime Premium | $9.99 | one-time |


## Frequently asked questions

### Is Archium free?

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

### Is Psychro Calc Pro free?

Psychro Calc Pro is free to download, with in-app purchases available.

### Do Archium or Psychro Calc Pro have ads?

Neither Archium nor Psychro Calc Pro shows ads.

### Which is updated more often, Archium or Psychro Calc Pro?

Archium ships an update every 3 weeks, and Psychro Calc Pro every 4 days. Most recently, Archium was updated on November 3, 2026 and Psychro Calc Pro on October 31, 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.*