# Greenius vs RoomCalculus

The clearest difference is in-app purchases: Greenius at none against RoomCalculus's 2. Greenius also leads on ads (none vs shown). RoomCalculus's advantage is update cadence (every 8 days vs every 2 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. RoomCalculus sells 2 in-app purchases, starting at $1.99 per month. Greenius asks for nothing beyond the download.

Greenius ships an update every 2 months, RoomCalculus every 8 days. The most recent releases landed on September 17, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Greenius | RoomCalculus |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 8 days** |
| Size | 11 MB | 53 MB |
| Requires iOS | 15.6 | **15.1** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [IBILL SRL SEMPLIFICATA](https://appshunter.io/developer/1458513076) | [Ahmet MEMIGUVEN](https://appshunter.io/developer/1872399030) |

## What reviewers say

### Greenius

[App page](https://appshunter.io/ios/app/greenius/id1483334725)

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

**In-app purchases:** none


### RoomCalculus

[App page](https://appshunter.io/ios/app/roomcalculus-quick-pricing/id6758394721)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium Subscription | $1.99 | per month |
| Premium - Yearly Subscription | $17.99 | per year |


## Frequently asked questions

### Is Greenius free?

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

### Is RoomCalculus free?

RoomCalculus is free to download, with in-app purchases available.

### Do Greenius or RoomCalculus have ads?

RoomCalculus shows ads; Greenius does not.

### Which is updated more often, Greenius or RoomCalculus?

Greenius ships an update every 2 months, and RoomCalculus every 8 days. Most recently, Greenius was updated on September 17, 2026 and RoomCalculus on October 1, 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.*