# RoomPlan vs Conversion Calculator

The clearest difference is review sentiment: Conversion Calculator at 100% against RoomPlan's 31%. Conversion Calculator also leads on rating (4.8 vs 4.1). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. RoomPlan sells 2 one-off in-app purchases and Conversion Calculator sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Conversion Calculator holds the better App Store score, 4.8 against 4.1. Both are backed by a comparable volume of ratings — 99 and 157 respectively. Written reviews point the same way: 31% of RoomPlan's written reviews are positive against 100% of Conversion Calculator's.

RoomPlan ships an update every 3 weeks, Conversion Calculator every 5 weeks. The most recent releases landed on October 16, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | RoomPlan | Conversion Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.1 (99 ratings)](https://appshunter.io/ios/app/roomplan-interior-3d-scanner/id1658425563/reviews) | **[4.8 (157 ratings)](https://appshunter.io/ios/app/conversion-calculator-metric/id6468678523/reviews)** |
| Number of ratings | 99 | **157** |
| Positive reviews | 30.6% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 5 weeks |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 50 MB | 7 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | iPhone, iPad | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Heliogram Labs](https://appshunter.io/developer/1671213246) | [Collins Cheruiyot](https://appshunter.io/developer/1579009978) |

## What reviewers say

### RoomPlan

[App page](https://appshunter.io/ios/app/roomplan-interior-3d-scanner/id1658425563)

Easily create and edit 3D models of your rooms using your device's camera. Automatically generate detailed 3D scans of your space and export them to other 3D software. Offers a free tier for basic use and a Pro tier for advanced editing and export options.

**Highlights:** Create 3D room models, Scan with rear-facing camera, Automatic 3D model generation, Edit 3D models, Export to 3D software, Save multiple 3D models

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| RoomPlan Pro | $4.99 | one-time |
| RoomPlan Pro | $6.99 | one-time |


### Conversion Calculator

[App page](https://appshunter.io/ios/app/conversion-calculator-metric/id6468678523)

Easily convert between metric and imperial units for weight, length, temperature, area, and time. This app offers precise, fast results with a clean interface, working offline for daily, travel, school, or work needs.

**Highlights:** Metric and imperial unit conversion, Weight, length, temperature, area, time, Offline functionality, Precise and fast results, Clean and minimal interface, Over 100 measurement types

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited access forever | $8.99 | one-time |


## Frequently asked questions

### Is RoomPlan free?

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

### Is Conversion Calculator free?

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

### Which has better reviews, RoomPlan or Conversion Calculator?

Conversion Calculator is rated higher. RoomPlan averages 4.1 out of 5 from 99 ratings, while Conversion Calculator averages 4.8 from 157 ratings.

### Do RoomPlan or Conversion Calculator have ads?

Neither RoomPlan nor Conversion Calculator shows ads.

### Which is updated more often, RoomPlan or Conversion Calculator?

RoomPlan ships an update every 3 weeks, and Conversion Calculator every 5 weeks. Most recently, RoomPlan was updated on October 16, 2026 and Conversion Calculator 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.*