# NeckShaftAngle App vs CupCalc

The clearest difference is price: CupCalc at Free against NeckShaftAngle App's $3.99. CupCalc also leads on update cadence (fortnightly vs every 11 months) and iOS requirement (15.1 vs 17.0). NeckShaftAngle App's advantage is in-app purchases (none vs 2). On ads and device support there is nothing between them.

CupCalc is free to download; NeckShaftAngle App costs $3.99 up front. CupCalc sells 2 in-app purchases, starting at $12.99 per year. NeckShaftAngle App asks for nothing beyond the download.

NeckShaftAngle App ships an update every 11 months, CupCalc fortnightly. Both last shipped on September 20, 2026.

## The numbers

| Metric | NeckShaftAngle App | CupCalc |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 11 months | **Fortnightly** |
| Size | 1 MB | 42 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [ORTHOPRACTIS.COM SINGLE MEMBER P.C.](https://appshunter.io/developer/1286360877) | [Zekko LLC](https://appshunter.io/developer/1889700014) |

## What reviewers say

### NeckShaftAngle App

[App page](https://appshunter.io/ios/app/neckshaftangle-app/id1286360878)

**Features:** Vision Pro support

**In-app purchases:** none


### CupCalc

[App page](https://appshunter.io/ios/app/cupcalc/id6761444976)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CupCalc Express | $12.99 | per year |
| CupCalc Pro | $19.99 | per year |


## Frequently asked questions

### Is NeckShaftAngle App free?

NeckShaftAngle App costs $3.99, with no in-app purchases.

### Is CupCalc free?

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

### Do NeckShaftAngle App or CupCalc have ads?

Neither NeckShaftAngle App nor CupCalc shows ads.

### Which is updated more often, NeckShaftAngle App or CupCalc?

NeckShaftAngle App ships an update every 11 months, and CupCalc fortnightly. Most recently, NeckShaftAngle App was updated on September 20, 2026 and CupCalc on September 20, 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.*