# Converter vs Drill Speed

The clearest difference is price: Drill Speed at Free against Converter's $2.99. On rating, review sentiment, ratings volume and update cadence there is nothing between them.

Drill Speed is free to download; Converter costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for Converter against 5.0 for Drill Speed. Both are backed by a comparable volume of ratings — 3 and 3 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Both ship on a similar rhythm, roughly every 6 months. The most recent releases landed on October 31, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Converter | Drill Speed |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | [5.0 (3 ratings)](https://appshunter.io/ios/app/converter-calculator/id513419019/reviews) | [5.0 (3 ratings)](https://appshunter.io/ios/app/drill-speed/id1478541012/reviews) |
| Number of ratings | 3 | 3 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | Every 6 months |
| Monetization | Paid | **Free** |
| Size | 74 MB | 41 MB |
| Requires iOS | **12.0** | 13.2 |
| Devices | iPhone, iPad, iPod | iPhone, iPod, Apple Watch |
| Age rating | 12+ | 4+ |
| Developer | [Dohmann Engineering Services](https://appshunter.io/developer/401682475) | [Michael Bykov](https://appshunter.io/developer/1660653209) |

## What reviewers say

### Converter

[App page](https://appshunter.io/ios/app/converter-calculator/id513419019)

This comprehensive utility app offers a suite of 10 powerful conversion and calculation tools, including units, currency, scientific, and more. Designed by an engineer with decades of experience, it ensures accuracy and a user-friendly interface for a wide range of applications.

**Highlights:** Over 1700 units in 50+ categories, 160+ currencies supported, Hex-Decimal-Binary and IEEE754 converters, Scientific calculator with 38-digit precision, Amortization calculator, Reference charts and documents, Customizable unit lists and favorites

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

**In-app purchases:** none


### Drill Speed

[App page](https://appshunter.io/ios/app/drill-speed/id1478541012)

Easily calculate optimal drill speeds for various drill bits and materials with an intuitive icon-based interface. This app automatically adjusts options based on your selections and remembers your progress.

**Highlights:** Intuitive icon-based interface, Wide selection of drill bits and materials, Automatic option adjustment, Detailed drill bit and material information, Saves selection progress, Apple Watch companion app

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Converter free?

Converter costs $2.99, with no in-app purchases.

### Is Drill Speed free?

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

### Which has better reviews, Converter or Drill Speed?

Converter and Drill Speed are both rated 5.0 out of 5 on the App Store, from 3 and 3 ratings respectively.

### Do Converter or Drill Speed have ads?

Neither Converter nor Drill Speed shows ads.

### Which is updated more often, Converter or Drill Speed?

Converter ships an update every 6 months, and Drill Speed every 6 months. Most recently, Converter was updated on October 31, 2026 and Drill Speed on October 24, 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.*