# Galileo vs Atomic Spectra

The clearest difference is price: Galileo at Free against Atomic Spectra's $1.99. Galileo also leads on update cadence (every 4 months vs every 19 months) and iOS requirement (17.6 vs 26.0). Atomic Spectra's advantage is device support (4 vs 2). On ads and in-app purchases there is nothing between them.

Galileo is free to download; Atomic Spectra costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Galileo ships an update every 4 months, Atomic Spectra every 19 months. The most recent releases landed on October 4, 2026 and October 23, 2026 respectively.

## The numbers

| Metric | Galileo | Atomic Spectra |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/atomic-spectra/id6444901660/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 19 months |
| Monetization | — | Paid |
| Size | 65 MB | 7 MB |
| Requires iOS | **17.6** | 26.0 |
| Devices | iPhone, iPad | **iPhone, iPad, Mac, Apple TV** |
| Age rating | 4+ | 4+ |
| Developer | [Davide Fiorino](https://appshunter.io/developer/1082765618) | [Jim Haungs](https://appshunter.io/developer/1498282259) |

## What reviewers say

### Galileo

[App page](https://appshunter.io/ios/app/galileo-ar-physics/id1323481784)

**Features:** macOS Compatibility

**In-app purchases:** none


### Atomic Spectra

[App page](https://appshunter.io/ios/app/atomic-spectra/id6444901660)

This reference app provides detailed information on strong line atomic emission spectra within the visible range. Users can search for elements by name, symbol, or atomic number and inspect individual spectra lines. It offers interactive features to visualize and navigate spectral data.

**Highlights:** Visible range spectra (380-740nm), Search by element name, symbol, or atomic number, Sort by name, symbol, or spectra line count, Inspect individual spectra lines, Interactive spectrum visualization

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Galileo free?

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

### Is Atomic Spectra free?

Atomic Spectra costs $1.99, with no in-app purchases.

### Do Galileo or Atomic Spectra have ads?

Neither Galileo nor Atomic Spectra shows ads.

### Which is updated more often, Galileo or Atomic Spectra?

Galileo ships an update every 4 months, and Atomic Spectra every 19 months. Most recently, Galileo was updated on October 4, 2026 and Atomic Spectra on October 23, 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.*