# ThreadChaser vs Screw Size Drill Bit Chart

The clearest difference is update cadence: ThreadChaser at every 5 days against Screw Size Drill Bit Chart's monthly. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. ThreadChaser sells 1 in-app purchase, starting at $2.99 per year and Screw Size Drill Bit Chart sells 3 in-app purchases, starting at $2.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ThreadChaser ships an update every 5 days, Screw Size Drill Bit Chart monthly. The most recent releases landed on June 28, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | ThreadChaser | Screw Size Drill Bit Chart |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 5 days** | Monthly |
| Size | 2 MB | 23 MB |
| Requires iOS | 18.6 | **17.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [JAMIE SAM PARTOVI](https://appshunter.io/developer/1891387720) | [Phuc Pham](https://appshunter.io/developer/1893081423) |

## What reviewers say

### ThreadChaser

[App page](https://appshunter.io/ios/app/threadchaser/id6761772249)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ThreadChaser Pro | $2.99 | per year |


### 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 ThreadChaser free?

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

### Is Screw Size Drill Bit Chart free?

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

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

Neither ThreadChaser nor Screw Size Drill Bit Chart shows ads.

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

ThreadChaser ships an update every 5 days, and Screw Size Drill Bit Chart monthly. Most recently, ThreadChaser was updated on June 28, 2026 and Screw Size Drill Bit Chart on September 18, 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.*