# ConvertCalc vs Inkwon

The clearest difference is in-app purchases: Inkwon at none against ConvertCalc's 1. Inkwon also leads on ads (none vs shown) and iOS requirement (15.0 vs 17.0). ConvertCalc's advantage is update cadence (every 8 days vs every 6 weeks). On price and device support there is nothing between them.

Both are free to download. ConvertCalc sells 1 one-off in-app purchase. Inkwon asks for nothing beyond the download.

ConvertCalc ships an update every 8 days, Inkwon every 6 weeks. The most recent releases landed on October 6, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | ConvertCalc | Inkwon |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/convertcalc/id6756512186/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 8 days** | Every 6 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 28 MB | 74 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Michael Riehl](https://appshunter.io/developer/1861093934) | [EOM TECHNOLOGY (HK) LIMITED](https://appshunter.io/developer/1894215736) |

## What reviewers say

### ConvertCalc

[App page](https://appshunter.io/ios/app/convertcalc/id6756512186)

This app combines a powerful calculator with an advanced unit converter, offering over 200 units across 19 categories. It allows for unified calculations and conversions in one step, with features like live currency exchange and date conversions. An optional pro version unlocks advanced customization and organizational tools.

**Highlights:** Unified calculation and conversion workflow, Over 200 units across 19 categories, Live currency conversion, Multiple calendar system conversions, Age calculator, Customizable themes and layouts, Offline functionality (excluding live currency)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ConvertCalc Pro | $8.99 | one-time |


### Inkwon

[App page](https://appshunter.io/ios/app/inkwon/id6762458367)

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

**In-app purchases:** none


## Frequently asked questions

### Is ConvertCalc free?

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

### Is Inkwon free?

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

### Do ConvertCalc or Inkwon have ads?

ConvertCalc shows ads; Inkwon does not.

### Which is updated more often, ConvertCalc or Inkwon?

ConvertCalc ships an update every 8 days, and Inkwon every 6 weeks. Most recently, ConvertCalc was updated on October 6, 2026 and Inkwon on October 5, 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.*