# Thread Calculators vs Helix Angle Calculator

The clearest difference is price: Helix Angle Calculator at Free against Thread Calculators's $1.99. Helix Angle Calculator also leads on update cadence (every 5 days vs every 10 months). Thread Calculators's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 16.6). On ads and in-app purchases there is nothing between them.

Helix Angle Calculator is free to download; Thread Calculators costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Thread Calculators ships an update every 10 months, Helix Angle Calculator every 5 days. The most recent releases landed on August 1, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | Thread Calculators | Helix Angle Calculator |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/thread-calculators/id1670586227/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 5 days** |
| Monetization | Paid | — |
| Size | 51 MB | 2 MB |
| Requires iOS | **13.0** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Kantaben Gorasiya](https://appshunter.io/developer/1640260396) | [SmiCut AB](https://appshunter.io/developer/1813477031) |

## What reviewers say

### Thread Calculators

[App page](https://appshunter.io/ios/app/thread-calculators/id1670586227)

This app provides precise thread-cutting data for various international standards. It assists machinists, engineers, and CNC professionals in quickly finding essential measurements and detailed tables for thread dimensions and cutting values.

**Highlights:** Supports international thread standards (M, UNC, NPT, etc.), Tap Hole Size Calculator, Bolt Diameter Guide, Tap Hole Forming Data, Tap Hole Repair Values, Detailed thread dimension tables

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

**In-app purchases:** none


### Helix Angle Calculator

[App page](https://appshunter.io/ios/app/helix-angle-calculator/id6745720275)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Thread Calculators free?

Thread Calculators costs $1.99, with no in-app purchases.

### Is Helix Angle Calculator free?

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

### Do Thread Calculators or Helix Angle Calculator have ads?

Neither Thread Calculators nor Helix Angle Calculator shows ads.

### Which is updated more often, Thread Calculators or Helix Angle Calculator?

Thread Calculators ships an update every 10 months, and Helix Angle Calculator every 5 days. Most recently, Thread Calculators was updated on August 1, 2026 and Helix Angle Calculator on September 8, 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.*