# Conversion vs Kubaj

The clearest difference is price: Kubaj at Free against Conversion's $0.99. Kubaj also leads on rating (5.0 vs 3.0) and review sentiment (100% vs 61%). Conversion's advantage is in-app purchases (none vs 3) and ratings volume (5 vs 1). On update cadence, ads and device support there is nothing between them.

Kubaj is free to download; Conversion costs $0.99 up front. Kubaj sells 3 in-app purchases, starting at $2.99 per 7 days. Conversion asks for nothing beyond the download.

Kubaj holds the better App Store score, 5.0 against 3.0. That said, the two scores are not equally well evidenced: Conversion has 5 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 61% of Conversion's written reviews are positive against 100% of Kubaj's.

Conversion ships an update every 2 months, Kubaj monthly. Both last shipped on October 21, 2026.

## The numbers

| Metric | Conversion | Kubaj |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | [3.0 (5 ratings)](https://appshunter.io/ios/app/conversion-unit-converter/id286552073/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/kubaj-volume-calculator/id6746670197/reviews)** |
| Number of ratings | **5** | 1 |
| Positive reviews | 61.0% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Monthly** |
| Monetization | **Paid** | Subscription |
| Size | 2 MB | 18 MB |
| Requires iOS | 26.0 | **18.4** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Duncan Campbell](https://appshunter.io/developer/286552076) | [Bahattin Duran](https://appshunter.io/developer/1677311418) |

## What reviewers say

### Conversion

[App page](https://appshunter.io/ios/app/conversion-unit-converter/id286552073)

This utility app provides instant conversions between a wide range of units, including metric, imperial, and currency. It features live exchange rates and supports 33 languages, all within a clean, clutter-free interface.

**Highlights:** Extensive unit categories (12 categories, 96 units), Live, offline-capable currency exchange rates, Supports 33 languages and regional number formats, Modern, clutter-free interface with fluid animations, Full VoiceOver and accessibility support, No ads, analytics, or tracking

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

**In-app purchases:** none


### Kubaj

[App page](https://appshunter.io/ios/app/kubaj-volume-calculator/id6746670197)

Calculate timber and log volumes accurately using various industry-standard methods. This tool supports offline use, unit conversion, batch calculations, and PDF report exports for forestry professionals.

**Highlights:** Volume calculation (Huber, Smalian, Newton, JAS, Doyle, Scribner), Timber, lumber, firewood measurement, Diameter, length, trim input, Unit conversion (cm, m, in, ft), Batch calculation, PDF report export, Offline functionality

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Weekly | $2.99 | per 7 days |
| Pro Monthly | $6.99 | per month |
| Pro Annual | $29.99 | per year |


## Frequently asked questions

### Is Conversion free?

Conversion costs $0.99, with no in-app purchases.

### Is Kubaj free?

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

### Which has better reviews, Conversion or Kubaj?

Kubaj is rated higher. Conversion averages 3.0 out of 5 from 5 ratings, while Kubaj averages 5.0 from 1 ratings.

### Do Conversion or Kubaj have ads?

Neither Conversion nor Kubaj shows ads.

### Which is updated more often, Conversion or Kubaj?

Conversion ships an update every 2 months, and Kubaj monthly. Most recently, Conversion was updated on October 21, 2026 and Kubaj on October 21, 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.*