# Preterm Growth Tracker Pro vs Eyedea Refractive

The clearest difference is price: Eyedea Refractive at Free against Preterm Growth Tracker Pro's $35.99. Eyedea Refractive also leads on update cadence (fortnightly vs every 2 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Eyedea Refractive is free to download; Preterm Growth Tracker Pro costs $35.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Preterm Growth Tracker Pro ships an update every 2 months, Eyedea Refractive fortnightly. The most recent releases landed on October 24, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Preterm Growth Tracker Pro | Eyedea Refractive |
| --- | --- | --- |
| Price | $35.99 | **Free** |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/eyedea-refractive/id1501282600/reviews)** |
| Number of ratings | — | **3** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Fortnightly** |
| Monetization | — | Free |
| Size | 2 MB | 57 MB |
| Requires iOS | 16.0 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 12+ | 17+ |
| Developer | [Quatrian Inc.](https://appshunter.io/developer/404828595) | [Eyedea Educacao e Desenvolvimento em Oftalmologia LTDA](https://appshunter.io/developer/1524074580) |

## What reviewers say

### Preterm Growth Tracker Pro

[App page](https://appshunter.io/ios/app/preterm-growth-tracker-pro/id1109760799)

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

**In-app purchases:** none


### Eyedea Refractive

[App page](https://appshunter.io/ios/app/eyedea-refractive/id1501282600)

This medical app assists ophthalmologists in pre-operative evaluations for refractive surgeries like Lasik and PRK. It calculates various metrics after applying nomograms, aiding in surgical indication judgments alongside clinical evaluation.

**Highlights:** Refractive surgery calculator, Pre-operative evaluation tool, LASIK, Lenticular Extraction, PRK support, Nomogram application, Post-surgery refraction calculation, Residual stromal bed estimation

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

**In-app purchases:** none


## Frequently asked questions

### Is Preterm Growth Tracker Pro free?

Preterm Growth Tracker Pro costs $35.99, with no in-app purchases.

### Is Eyedea Refractive free?

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

### Do Preterm Growth Tracker Pro or Eyedea Refractive have ads?

Neither Preterm Growth Tracker Pro nor Eyedea Refractive shows ads.

### Which is updated more often, Preterm Growth Tracker Pro or Eyedea Refractive?

Preterm Growth Tracker Pro ships an update every 2 months, and Eyedea Refractive fortnightly. Most recently, Preterm Growth Tracker Pro was updated on October 24, 2026 and Eyedea Refractive on October 16, 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.*