# Helix Angle Calculator vs Taper Formulas & Tools

The clearest difference is in-app purchases: Helix Angle Calculator at none against Taper Formulas & Tools's 1. Helix Angle Calculator also leads on update cadence (weekly vs every 9 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Taper Formulas & Tools sells 1 one-off in-app purchase. Helix Angle Calculator asks for nothing beyond the download.

Helix Angle Calculator ships an update weekly, Taper Formulas & Tools every 9 months. The most recent releases landed on October 28, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Helix Angle Calculator | Taper Formulas & Tools |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.5 (2 ratings)](https://appshunter.io/ios/app/taper-formulas-and-tools/id6755769356/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Every 9 months |
| Monetization | — | Free with in-app purchases |
| Size | 8 MB | 33 MB |
| Requires iOS | 16.6 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [SmiCut AB](https://appshunter.io/developer/1813477031) | [Nanjibhai Gorasiya](https://appshunter.io/developer/1834066312) |

## What reviewers say

### Helix Angle Calculator

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

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

**In-app purchases:** none


### Taper Formulas & Tools

[App page](https://appshunter.io/ios/app/taper-formulas-and-tools/id6755769356)

This app provides essential machining calculators for taper turning, lathe operations, and angle measurements. It simplifies complex calculations for machinists, engineers, and students, ensuring precision in every task. Supports both metric and imperial units.

**Highlights:** Taper angle calculator, Diameter calculations, Length and ratio tools, Angle calculator, Metric/imperial support, Formula references

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime premium | $9.99 | one-time |


## Frequently asked questions

### Is Helix Angle Calculator free?

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

### Is Taper Formulas & Tools free?

Taper Formulas & Tools is free to download, with in-app purchases available.

### Do Helix Angle Calculator or Taper Formulas & Tools have ads?

Neither Helix Angle Calculator nor Taper Formulas & Tools shows ads.

### Which is updated more often, Helix Angle Calculator or Taper Formulas & Tools?

Helix Angle Calculator ships an update weekly, and Taper Formulas & Tools every 9 months. Most recently, Helix Angle Calculator was updated on October 28, 2026 and Taper Formulas & Tools on November 5, 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.*