# Conversion Calculator vs ConvertAll Drag

The clearest difference is in-app purchases: ConvertAll Drag at none against Conversion Calculator's 1. ConvertAll Drag also leads on iOS requirement (13.0 vs 17.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Conversion Calculator sells 1 one-off in-app purchase. ConvertAll Drag asks for nothing beyond the download.

Conversion Calculator ships an update every 5 weeks, ConvertAll Drag every 2 months. The most recent releases landed on October 14, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Conversion Calculator | ConvertAll Drag |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (157 ratings)](https://appshunter.io/ios/app/conversion-calculator-metric/id6468678523/reviews)** | — |
| Number of ratings | **157** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 2 months |
| Monetization | Free with in-app purchases | — |
| Size | 7 MB | 23 MB |
| Requires iOS | 17.0 | **13.0** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Collins Cheruiyot](https://appshunter.io/developer/1579009978) | [Shin YuJin](https://appshunter.io/developer/413998995) |

## What reviewers say

### 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 |


### ConvertAll Drag

[App page](https://appshunter.io/ios/app/convertall-drag/id6756971777)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Conversion Calculator free?

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

### Is ConvertAll Drag free?

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

### Do Conversion Calculator or ConvertAll Drag have ads?

Neither Conversion Calculator nor ConvertAll Drag shows ads.

### Which is updated more often, Conversion Calculator or ConvertAll Drag?

Conversion Calculator ships an update every 5 weeks, and ConvertAll Drag every 2 months. Most recently, Conversion Calculator was updated on October 14, 2026 and ConvertAll Drag on October 12, 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.*