# Skipper Science App vs Blue Post Cross

The clearest difference is update cadence: Blue Post Cross at daily against Skipper Science App's every 3 weeks. Skipper Science App's advantage is iOS requirement (15.6 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

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

Skipper Science App ships an update every 3 weeks, Blue Post Cross daily. The most recent releases landed on October 12, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Skipper Science App | Blue Post Cross |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/skipper-science-app/id6504762932/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Daily** |
| Monetization | Free | — |
| Size | 151 MB | 9 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Aleut Community of St. Paul Island Tribal Government](https://appshunter.io/developer/1329178887) | [Toshinori Matsui](https://appshunter.io/developer/1870057546) |

## What reviewers say

### Skipper Science App

[App page](https://appshunter.io/ios/app/skipper-science-app/id6504762932)

This app allows fishermen to easily report crucial marine data from their phones while at sea. It supports structured data collection on environmental and fisheries priorities, even without internet access. Join a community dedicated to advocating for healthy fisheries.

**Highlights:** Report jellyfish and algae blooms, Log fish stomach contents, Record entanglements and marine debris, Track sea surface temperature, Document marine mammal interactions, Offline data logging, Structured data collection forms

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

**In-app purchases:** none


### Blue Post Cross

[App page](https://appshunter.io/ios/app/blue-post-cross/id6801400267)

**In-app purchases:** none


## Frequently asked questions

### Is Skipper Science App free?

Skipper Science App is free to download, with no in-app purchases.

### Is Blue Post Cross free?

Blue Post Cross is free to download, with no in-app purchases.

### Do Skipper Science App or Blue Post Cross have ads?

Neither Skipper Science App nor Blue Post Cross shows ads.

### Which is updated more often, Skipper Science App or Blue Post Cross?

Skipper Science App ships an update every 3 weeks, and Blue Post Cross daily. Most recently, Skipper Science App was updated on October 12, 2026 and Blue Post Cross on October 4, 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.*