# Screw Conveyor Pro vs OpLink

The clearest difference is price: OpLink at Free against Screw Conveyor Pro's $3.99. OpLink also leads on update cadence (fortnightly vs every 41 months) and iOS requirement (13.0 vs 16.1). On ads, in-app purchases and device support there is nothing between them.

OpLink is free to download; Screw Conveyor Pro costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Screw Conveyor Pro ships an update every 41 months, OpLink fortnightly. The most recent releases landed on August 27, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | Screw Conveyor Pro | OpLink |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 41 months | **Fortnightly** |
| Monetization | Paid | — |
| Size | 1 MB | 178 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) | [Michelin](https://appshunter.io/developer/994145743) |

## What reviewers say

### Screw Conveyor Pro

[App page](https://appshunter.io/ios/app/screw-conveyor-pro/id1487421019)

Calculate screw conveyor capacity, speed, and power requirements with this utility app. It requires specific inputs like screw diameter, RPM, and material properties to provide accurate engineering calculations for professionals in fabrication and conveying equipment manufacturing.

**Highlights:** Calculate material carrying capacity, Calculate conveyor speed, Calculate screw conveyor power requirement, Input screw diameter, Input material specific gravity, Input conveyor length

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

**In-app purchases:** none


### OpLink

[App page](https://appshunter.io/ios/app/oplink/id6749260445)

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

**In-app purchases:** none


## Frequently asked questions

### Is Screw Conveyor Pro free?

Screw Conveyor Pro costs $3.99, with no in-app purchases.

### Is OpLink free?

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

### Do Screw Conveyor Pro or OpLink have ads?

Neither Screw Conveyor Pro nor OpLink shows ads.

### Which is updated more often, Screw Conveyor Pro or OpLink?

Screw Conveyor Pro ships an update every 41 months, and OpLink fortnightly. Most recently, Screw Conveyor Pro was updated on August 27, 2026 and OpLink on September 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.*