# Drill Speed vs Shellac Calculator

The clearest difference is ads: Drill Speed at none against Shellac Calculator's shown. On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Both ship on a similar rhythm, roughly every 6 months. The most recent releases landed on September 28, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | Drill Speed | Shellac Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/drill-speed/id1478541012/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 6 months | Every 6 months |
| Monetization | Free | — |
| Size | 41 MB | 39 MB |
| Requires iOS | **13.2** | 14.0 |
| Devices | iPhone, iPod, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Michael Bykov](https://appshunter.io/developer/1660653209) | [Innovative Tomato, LLC](https://appshunter.io/developer/1265226906) |

## What reviewers say

### 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


### Shellac Calculator

[App page](https://appshunter.io/ios/app/shellac-calculator/id6444370182)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Drill Speed free?

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

### Is Shellac Calculator free?

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

### Do Drill Speed or Shellac Calculator have ads?

Shellac Calculator shows ads; Drill Speed does not.

### Which is updated more often, Drill Speed or Shellac Calculator?

Drill Speed ships an update every 6 months, and Shellac Calculator every 6 months. Most recently, Drill Speed was updated on September 28, 2026 and Shellac Calculator on September 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.*