# Convert vs RubberSource

The clearest difference is in-app purchases: RubberSource at none against Convert's 2. RubberSource also leads on ads (none vs shown) and update cadence (every 3 weeks vs every 3 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Convert sells 2 in-app purchases, starting at $0.99 per 6 months. RubberSource asks for nothing beyond the download.

Convert ships an update every 3 months, RubberSource every 3 weeks. The most recent releases landed on October 20, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Convert | RubberSource |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (126 ratings)](https://appshunter.io/ios/app/convert-unit-and-currency/id884044389/reviews)** | — |
| Number of ratings | **126** | — |
| Positive reviews | 69.8% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Monetization | Freemium | — |
| Size | 39 MB | 23 MB |
| Requires iOS | **12.0** | 12.3 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Raphael Odermatt](https://appshunter.io/developer/403027529) | [Avanaire Design, LLC](https://appshunter.io/developer/409628132) |

## What reviewers say

### Convert

[App page](https://appshunter.io/ios/app/convert-unit-and-currency/id884044389)

Easily convert hundreds of physical units and dimensions with this powerful tool. It also includes a currency converter with daily updated exchange rates for over 130 countries and is available on Apple Watch.

**Highlights:** Unit conversion for 398 units, Currency conversion with daily rates, Integrated calculator, Apple Watch support, History charts for currencies, Copy & Paste functionality

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Advanced Features | $0.99 | per 6 months |
| Advanced Features | $1.99 | one-time |


### RubberSource

[App page](https://appshunter.io/ios/app/rubbersource/id6455788482)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Convert free?

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

### Is RubberSource free?

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

### Do Convert or RubberSource have ads?

Convert shows ads; RubberSource does not.

### Which is updated more often, Convert or RubberSource?

Convert ships an update every 3 months, and RubberSource every 3 weeks. Most recently, Convert was updated on October 20, 2026 and RubberSource on October 15, 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.*