# Mortho vs CupCalc

The clearest difference is in-app purchases: Mortho at none against CupCalc's 2. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. CupCalc sells 2 in-app purchases, starting at $12.99 per year. Mortho asks for nothing beyond the download.

Mortho ships an update every 3 weeks, CupCalc fortnightly. The most recent releases landed on October 24, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Mortho | CupCalc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/cupcalc/id6761444976/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Fortnightly** |
| Monetization | — | Free with in-app purchases |
| Size | 125 MB | 42 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [michael murphy](https://appshunter.io/developer/1521587197) | [Zekko LLC](https://appshunter.io/developer/1889700014) |

## What reviewers say

### Mortho

[App page](https://appshunter.io/ios/app/mortho/id1560491474)

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

**In-app purchases:** none


### CupCalc

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

This medical reference calculator assists orthopaedic surgeons and trainees in total hip arthroplasty by applying published mathematical formulas to compute acetabular cup targets. It provides detailed calculations based on pelvic incidence, sacral slope, and femoral mobility, with all data traceable to peer-reviewed literature.

**Highlights:** Acetabular cup target computation, Pelvic incidence and sacral slope analysis, Femoral mobility classification, Functional anteversion and inclination targets, Safe zone plot with CSI thresholds, Exportable PDF planning summary

**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 Mortho free?

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

### Is CupCalc free?

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

### Do Mortho or CupCalc have ads?

Neither Mortho nor CupCalc shows ads.

### Which is updated more often, Mortho or CupCalc?

Mortho ships an update every 3 weeks, and CupCalc fortnightly. Most recently, Mortho was updated on October 24, 2026 and CupCalc on October 28, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*