# Infant Simulation System vs ISS Pass Finder

The clearest difference is update cadence: ISS Pass Finder at daily against Infant Simulation System's every 11 days. Infant Simulation System's advantage is iOS requirement (13.0 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.

Infant Simulation System ships an update every 11 days, ISS Pass Finder daily. The most recent releases landed on October 7, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | Infant Simulation System | ISS Pass Finder |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/iss-pass-finder/id6766076547/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 11 days | **Daily** |
| Monetization | — | Free |
| Size | 5 MB | 4 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Solidusystems SA de CV](https://appshunter.io/developer/1373291923) | [Bill Bozeman](https://appshunter.io/developer/1805987087) |

## What reviewers say

### Infant Simulation System

[App page](https://appshunter.io/ios/app/infant-simulation-system/id1631897176)

**Features:** macOS Compatibility

**In-app purchases:** none


### ISS Pass Finder

[App page](https://appshunter.io/ios/app/iss-pass-finder/id6766076547)

This app predicts International Space Station passes and rates them based on real-time weather and visibility. It uses augmented reality to guide you to the exact viewing position in the sky, helping you avoid mistaking planes for the ISS.

**Highlights:** Real-time weather and visibility scoring, Pass ratings: Poor / Maybe / Excellent, Augmented Reality sky tracking, Accurate ISS pass predictions, Eliminates false sightings

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

**In-app purchases:** none


## Frequently asked questions

### Is Infant Simulation System free?

Infant Simulation System is free to download, with no in-app purchases.

### Is ISS Pass Finder free?

ISS Pass Finder is free to download, with no in-app purchases.

### Do Infant Simulation System or ISS Pass Finder have ads?

Neither Infant Simulation System nor ISS Pass Finder shows ads.

### Which is updated more often, Infant Simulation System or ISS Pass Finder?

Infant Simulation System ships an update every 11 days, and ISS Pass Finder daily. Most recently, Infant Simulation System was updated on October 7, 2026 and ISS Pass Finder on October 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.*