# Atomic Spectra vs Active and Passive Transport

The clearest difference is price: Active and Passive Transport at Free against Atomic Spectra's $1.99. Active and Passive Transport also leads on iOS requirement (12.0 vs 26.0). On ads, in-app purchases and device support there is nothing between them.

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

## The numbers

| Metric | Atomic Spectra | Active and Passive Transport |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| 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 19 months | — |
| Monetization | Paid | — |
| Size | 7 MB | 28 MB |
| Requires iOS | 26.0 | **12.0** |
| Devices | **iPhone, iPad, Mac, Apple TV** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Jim Haungs](https://appshunter.io/developer/1498282259) | [Science Education Institute](https://appshunter.io/developer/1439710468) |

## What reviewers say

### 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


### Active and Passive Transport

[App page](https://appshunter.io/ios/app/active-and-passive-transport/id6744296769)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Atomic Spectra free?

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

### Is Active and Passive Transport free?

Active and Passive Transport is free to download, with no in-app purchases.

### Do Atomic Spectra or Active and Passive Transport have ads?

Neither Atomic Spectra nor Active and Passive Transport shows ads.

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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.*