# VespaGPX vs RoomCalculus

The clearest difference is in-app purchases: VespaGPX at none against RoomCalculus's 2. VespaGPX also leads on ads (none vs shown). RoomCalculus's advantage is update cadence (every 8 days vs every 2 months) and iOS requirement (15.1 vs 18.0). On price and device support there is nothing between them.

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

VespaGPX ships an update every 2 months, RoomCalculus every 8 days. The most recent releases landed on October 6, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | VespaGPX | RoomCalculus |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 8 days** |
| Size | 2 MB | 53 MB |
| Requires iOS | 18.0 | **15.1** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [David Shamma](https://appshunter.io/developer/373368018) | [Ahmet MEMIGUVEN](https://appshunter.io/developer/1872399030) |

## What reviewers say

### VespaGPX

[App page](https://appshunter.io/ios/app/vespagpx/id6738614271)

**Features:** macOS Compatibility

**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 VespaGPX free?

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

### Is RoomCalculus free?

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

### Do VespaGPX or RoomCalculus have ads?

RoomCalculus shows ads; VespaGPX does not.

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

VespaGPX ships an update every 2 months, and RoomCalculus every 8 days. Most recently, VespaGPX was updated on October 6, 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.*