# QuickCalculator vs Drill Bit Converter

The clearest difference is price: QuickCalculator at Free against Drill Bit Converter's $0.99. QuickCalculator also leads on update cadence (every 2 months vs every 54 months). Drill Bit Converter's advantage is in-app purchases (none vs 2) and ads (none vs shown). On device support and iOS requirement there is nothing between them.

QuickCalculator is free to download; Drill Bit Converter costs $0.99 up front. QuickCalculator sells 2 in-app purchases, starting at $0.99 per year. Drill Bit Converter asks for nothing beyond the download.

QuickCalculator ships an update every 2 months, Drill Bit Converter every 54 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | QuickCalculator | Drill Bit Converter |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 2 months** | Every 54 months |
| Size | 50 MB | 2 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [KAZUHIRO KAKIMOTO](https://appshunter.io/developer/1378277306) | [Dohmann Engineering Services](https://appshunter.io/developer/401682475) |

## What reviewers say

### QuickCalculator

[App page](https://appshunter.io/ios/app/quickcalculator-all-in-one/id1404000437)

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro - Annual | $0.99 | per year |
| Pro - Lifetime | $4.99 | one-time |


### Drill Bit Converter

[App page](https://appshunter.io/ios/app/drill-bit-converter/id1552080952)

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

**In-app purchases:** none


## Frequently asked questions

### Is QuickCalculator free?

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

### Is Drill Bit Converter free?

Drill Bit Converter costs $0.99, with no in-app purchases.

### Do QuickCalculator or Drill Bit Converter have ads?

QuickCalculator shows ads; Drill Bit Converter does not.

### Which is updated more often, QuickCalculator or Drill Bit Converter?

QuickCalculator ships an update every 2 months, and Drill Bit Converter every 54 months. Most recently, QuickCalculator was updated on November 2, 2026 and Drill Bit Converter on November 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.*