# Arc Calculator Pro vs Screw Flight Calculator

The clearest difference is update cadence: Screw Flight Calculator at every 17 months against Arc Calculator Pro's every 41 months. Screw Flight Calculator also leads on price ($1.99 vs $3.99) and iOS requirement (13.0 vs 16.1). On review sentiment, ads, in-app purchases and monetization model there is nothing between them.

Arc Calculator Pro costs $3.99 and Screw Flight Calculator $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Arc Calculator Pro ships an update every 41 months, Screw Flight Calculator every 17 months. The most recent releases landed on October 17, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Arc Calculator Pro | Screw Flight Calculator |
| --- | --- | --- |
| Price | $3.99 | **$1.99** |
| Rating | — | **[1.0 (1 ratings)](https://appshunter.io/ios/app/screw-flight-calculator/id1664794765/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 0.0% of reviews | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 41 months | **Every 17 months** |
| Monetization | Paid | Paid |
| Size | 2 MB | 44 MB |
| Requires iOS | 16.1 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Imran Pinjara](https://appshunter.io/developer/1484488781) | [Kantaben Gorasiya](https://appshunter.io/developer/1640260396) |

## What reviewers say

### Arc Calculator Pro

[App page](https://appshunter.io/ios/app/arc-calculator-pro/id1491369908)

This utility app provides precise calculations for various arc measurements, including length, angle, radius, and area. It supports both millimeters and inches, making it ideal for fabrication and engineering tasks. The app is designed for high performance and offline use.

**Highlights:** Arc Length Calculation, Arc Angle Calculation, Arc Radius Calculation, Arc Segment Area Calculation, Arc Sector Area Calculation, Supports mm and inches, Offline functionality

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

**In-app purchases:** none


### Screw Flight Calculator

[App page](https://appshunter.io/ios/app/screw-flight-calculator/id1664794765)

Calculate the flat pattern size for cutting blank plates for screw flight development and fabrication. This tool is essential for creating screw conveyors, ribbon blenders, and other process equipment.

**Highlights:** Calculate flat pattern size, Input outside & inside diameter, Input pitch and material thickness, Calculate weight of material, Includes radial cut element

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

**In-app purchases:** none


## Frequently asked questions

### Is Arc Calculator Pro free?

Arc Calculator Pro costs $3.99, with no in-app purchases.

### Is Screw Flight Calculator free?

Screw Flight Calculator costs $1.99, with no in-app purchases.

### Do Arc Calculator Pro or Screw Flight Calculator have ads?

Neither Arc Calculator Pro nor Screw Flight Calculator shows ads.

### Which is updated more often, Arc Calculator Pro or Screw Flight Calculator?

Arc Calculator Pro ships an update every 41 months, and Screw Flight Calculator every 17 months. Most recently, Arc Calculator Pro was updated on October 17, 2026 and Screw Flight Calculator on October 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.*