# MetalCalc vs Screw Size Drill Bit Chart

The clearest difference is in-app purchases: MetalCalc at none against Screw Size Drill Bit Chart's 3. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Screw Size Drill Bit Chart sells 3 in-app purchases, starting at $2.99 per 7 days. MetalCalc asks for nothing beyond the download.

MetalCalc ships an update every 3 weeks, Screw Size Drill Bit Chart monthly. The most recent releases landed on October 27, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | MetalCalc | Screw Size Drill Bit Chart |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Monthly |
| Size | 5 MB | 23 MB |
| Requires iOS | 18.2 | **17.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Aliaksandr Barautsou](https://appshunter.io/developer/1561604712) | [Phuc Pham](https://appshunter.io/developer/1893081423) |

## What reviewers say

### MetalCalc

[App page](https://appshunter.io/ios/app/metalcalc/id6757444969)

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

**In-app purchases:** none


### Screw Size Drill Bit Chart

[App page](https://appshunter.io/ios/app/screw-size-drill-bit-chart/id6772276125)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Countersink Pro, Weekly | $2.99 | per 7 days |
| Thread Finder, Yearly | $14.99 | per year |
| Full Fastener Guide, One-Time | $29.99 | one-time |


## Frequently asked questions

### Is MetalCalc free?

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

### Is Screw Size Drill Bit Chart free?

Screw Size Drill Bit Chart is free to download, with in-app purchases available.

### Do MetalCalc or Screw Size Drill Bit Chart have ads?

Neither MetalCalc nor Screw Size Drill Bit Chart shows ads.

### Which is updated more often, MetalCalc or Screw Size Drill Bit Chart?

MetalCalc ships an update every 3 weeks, and Screw Size Drill Bit Chart monthly. Most recently, MetalCalc was updated on October 27, 2026 and Screw Size Drill Bit Chart on October 31, 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.*