# ZooMorphTrak vs Releasely

The clearest difference is in-app purchases: ZooMorphTrak at none against Releasely's 1. ZooMorphTrak also leads on device support (3 vs 1) and iOS requirement (9.0 vs 16.0). Releasely's advantage is update cadence (every 5 days vs every 4 months). On price and ads there is nothing between them.

Both are free to download. Releasely sells 1 one-off in-app purchase. ZooMorphTrak asks for nothing beyond the download.

ZooMorphTrak ships an update every 4 months, Releasely every 5 days. The most recent releases landed on September 23, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | ZooMorphTrak | Releasely |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/zoomorphtrak/id1270560206/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 5 days** |
| Monetization | Free | — |
| Size | 20 MB | 1 MB |
| Requires iOS | **9.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Chicago Zoological Society](https://appshunter.io/developer/508261966) | [Jhomar Maravillas](https://appshunter.io/developer/6783703541) |

## What reviewers say

### ZooMorphTrak

[App page](https://appshunter.io/ios/app/zoomorphtrak/id1270560206)

Estimate and compare Bottlenose Dolphin bodyweight using simple measurements like length and girth. This tool is designed for animal care specialists in institutional settings, offering approximate weight calculations and comparisons to wild dolphin data.

**Highlights:** Estimate dolphin bodyweight, Compare managed vs. wild dolphin weights, Input sex, age, length, and girth, Avoids need for scales or trained cooperation, Derived from long-term dolphin studies

**In-app purchases:** none


### Releasely

[App page](https://appshunter.io/ios/app/releasely-model-release/id6792488581)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock Unlimited | $4.99 | one-time |


## Frequently asked questions

### Is ZooMorphTrak free?

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

### Is Releasely free?

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

### Do ZooMorphTrak or Releasely have ads?

Neither ZooMorphTrak nor Releasely shows ads.

### Which is updated more often, ZooMorphTrak or Releasely?

ZooMorphTrak ships an update every 4 months, and Releasely every 5 days. Most recently, ZooMorphTrak was updated on September 23, 2026 and Releasely on September 19, 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.*