# SaturnMoons vs Human Digestive System

The clearest difference is price: Human Digestive System at $0.99 against SaturnMoons's $2.99. SaturnMoons's advantage is device support (3 vs 1) and iOS requirement (8.0 vs 12.0). On update cadence, ads and in-app purchases there is nothing between them.

SaturnMoons costs $2.99 and Human Digestive System $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

SaturnMoons ships an update every 26 months, Human Digestive System every 18 months. The most recent releases landed on October 29, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | SaturnMoons | Human Digestive System |
| --- | --- | --- |
| Price | $2.99 | **$0.99** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/saturnmoons/id606938707/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 40.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 26 months | **Every 18 months** |
| Monetization | Paid | — |
| Size | 36 MB | 401 MB |
| Requires iOS | **8.0** | 12.0 |
| Devices | **iPhone, iPad, iPod** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [Guidebook Inc](https://appshunter.io/developer/1387977271) | [www.ajaxmediatech.com](https://appshunter.io/developer/973768003) |

## What reviewers say

### SaturnMoons

[App page](https://appshunter.io/ios/app/saturnmoons/id606938707)

Explore Saturn's rings and moons with this interactive guide. Pinpoint the location of its largest moons and step through time to see their future positions. Discover fascinating facts and images of Saturn's unique lunar family.

**Highlights:** Locate Saturn's nine largest moons, Pinch-zoomable interface, Local time synchronization, Time controls (seconds, hours, days, years), Customizable telescope view, Encyclopedia of Saturn's moons, Stunning images of moons

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

**In-app purchases:** none


### Human Digestive System

[App page](https://appshunter.io/ios/app/human-digestive-system/id983535092)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SaturnMoons free?

SaturnMoons costs $2.99, with no in-app purchases.

### Is Human Digestive System free?

Human Digestive System costs $0.99, with no in-app purchases.

### Do SaturnMoons or Human Digestive System have ads?

Neither SaturnMoons nor Human Digestive System shows ads.

### Which is updated more often, SaturnMoons or Human Digestive System?

SaturnMoons ships an update every 26 months, and Human Digestive System every 18 months. Most recently, SaturnMoons was updated on October 29, 2026 and Human Digestive System on October 26, 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.*