# Volume Tracker vs RetaPro

The clearest difference is in-app purchases: Volume Tracker at none against RetaPro's 2. RetaPro's advantage is iOS requirement (15.5 vs 18.5). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. RetaPro sells 2 in-app purchases, starting at $39.99 per year. Volume Tracker asks for nothing beyond the download.

Volume Tracker ships an update every 3 months, RetaPro every 2 months. The most recent releases landed on October 5, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Volume Tracker | RetaPro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.7 (40 ratings)](https://appshunter.io/ios/app/retapro-retatrutide-tracker/id6772027026/reviews)** |
| Number of ratings | — | **40** |
| Positive reviews | — | 25.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | — | Free with in-app purchases |
| Size | 12 MB | 103 MB |
| Requires iOS | 18.5 | **15.5** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Andre Perussi](https://appshunter.io/developer/1819722726) | [Agora Labs Ltda.](https://appshunter.io/developer/1846683084) |

## What reviewers say

### Volume Tracker

[App page](https://appshunter.io/ios/app/volume-tracker/id6747077018)

**Features:** macOS Compatibility

**In-app purchases:** none


### RetaPro

[App page](https://appshunter.io/ios/app/retapro-retatrutide-tracker/id6772027026)

This app helps users meticulously track their retatrutide treatment. It logs doses, manages vials, calculates reconstitutions, and monitors progress with features like meal logging and weight tracking. Smart reminders ensure no dose is missed.

**Highlights:** Retatrutide dose logging, Vial volume monitoring, Reconstitution calculation, Protocol and cycle tracking, Personalized meal logging, Weight and progress photo tracking, Smart injection reminders

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Yearly Plan | $39.99 | per year |
| Lifetime Plan | $39.99 | one-time |


## Frequently asked questions

### Is Volume Tracker free?

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

### Is RetaPro free?

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

### Do Volume Tracker or RetaPro have ads?

Neither Volume Tracker nor RetaPro shows ads.

### Which is updated more often, Volume Tracker or RetaPro?

Volume Tracker ships an update every 3 months, and RetaPro every 2 months. Most recently, Volume Tracker was updated on October 5, 2026 and RetaPro on October 15, 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.*