# Kalc vs ConvertTiles

The clearest difference is in-app purchases: Kalc at none against ConvertTiles's 1. Kalc also leads on update cadence (every 9 days vs every 3 months) and iOS requirement (13.4 vs 16.1). ConvertTiles's advantage is rating (5.0 vs 4.7). On price, ratings volume, ads and device support there is nothing between them.

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

ConvertTiles holds the better App Store score, 5.0 against 4.7. Both are backed by a comparable volume of ratings — 3 and 2 respectively.

Kalc ships an update every 9 days, ConvertTiles every 3 months. The most recent releases landed on June 1, 2026 and June 3, 2026 respectively.

## The numbers

| Metric | Kalc | ConvertTiles |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (3 ratings)](https://appshunter.io/ios/app/kalc/id610991936/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/converttiles-unit-converter/id6445965059/reviews)** |
| Number of ratings | **3** | 2 |
| Positive reviews | 96.2% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 9 days** | Every 3 months |
| Monetization | **Free** | Freemium |
| Size | 24 MB | 2 MB |
| Requires iOS | **13.4** | 16.1 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [YUTA OKAJIMA](https://appshunter.io/developer/610991939) | [Jason Koehn](https://appshunter.io/developer/1666093705) |

## What reviewers say

### Kalc

[App page](https://appshunter.io/ios/app/kalc/id610991936)

This utility app offers a unit converter, calculator, and world clock. Its user-friendly interface is designed for quick access to everyday calculations and conversions.

**Highlights:** Unit converter, Calculator, World clock, Simple UI, Quick results

**Features:** macOS Compatibility

**In-app purchases:** none


### ConvertTiles

[App page](https://appshunter.io/ios/app/converttiles-unit-converter/id6445965059)

This utility app organizes unit converters into distinct tiles, simplifying conversions. It remembers your last used units and offers customization options with a pro subscription. Easily convert between a wide range of measurements.

**Highlights:** Tile-based converter organization, Saves last used units, Custom unit sets (Pro), Custom accent colors (Pro), Colored tile borders, 20 conversion groups

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro | $9.99 | one-time |


## Frequently asked questions

### Is Kalc free?

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

### Is ConvertTiles free?

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

### Which has better reviews, Kalc or ConvertTiles?

ConvertTiles is rated higher. Kalc averages 4.7 out of 5 from 3 ratings, while ConvertTiles averages 5.0 from 2 ratings.

### Do Kalc or ConvertTiles have ads?

Neither Kalc nor ConvertTiles shows ads.

### Which is updated more often, Kalc or ConvertTiles?

Kalc ships an update every 9 days, and ConvertTiles every 3 months. Most recently, Kalc was updated on June 1, 2026 and ConvertTiles on June 3, 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.*