# Goniotrans vs PTH Calculator

Goniotrans and PTH Calculator are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Goniotrans ships an update every 39 months, PTH Calculator every 37 months. The most recent releases landed on October 23, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Goniotrans | PTH Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/goniotrans/id595634397/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 39 months | **Every 37 months** |
| Monetization | Free | — |
| Size | 3 MB | 25 MB |
| Requires iOS | 12.0 | **11.0** |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Felipe Gordillo](https://appshunter.io/developer/595634400) | [AVANTO CREATIVE APPS S.L.](https://appshunter.io/developer/1080379340) |

## What reviewers say

### Goniotrans

[App page](https://appshunter.io/ios/app/goniotrans/id595634397)

This medical tool helps visualize and measure angular positions of ocular structures on eye images. It overlays a protractor template to accurately mark reference points for surgical incisions or lens placement. Useful for ophthalmologists and eye care professionals.

**Highlights:** Angular measurement on eye images, Overlay protractor template, Mark reference points, Measure incision meridians, Assess lens stability

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

**In-app purchases:** none


### PTH Calculator

[App page](https://appshunter.io/ios/app/pth-calculator/id1137356636)

**In-app purchases:** none


## Frequently asked questions

### Is Goniotrans free?

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

### Is PTH Calculator free?

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

### Do Goniotrans or PTH Calculator have ads?

Neither Goniotrans nor PTH Calculator shows ads.

### Which is updated more often, Goniotrans or PTH Calculator?

Goniotrans ships an update every 39 months, and PTH Calculator every 37 months. Most recently, Goniotrans was updated on October 23, 2026 and PTH Calculator on October 10, 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.*