# Astro Viewer vs NAIIVE

The clearest difference is update cadence: NAIIVE at monthly against Astro Viewer's every 4 months. Astro Viewer's advantage is iOS requirement (15.6 vs 26.0). 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.

Astro Viewer ships an update every 4 months, NAIIVE monthly. The most recent releases landed on November 4, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Astro Viewer | NAIIVE |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/naiive/id6758065886/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Monthly** |
| Monetization | — | Free |
| Size | 20 MB | 48 MB |
| Requires iOS | **15.6** | 26.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, Mac, Vision Pro** |
| Age rating | 4+ | 4+ |
| Developer | [Heebok Lee](https://appshunter.io/developer/1855773499) | [Rui Zhou](https://appshunter.io/developer/1089847701) |

## What reviewers say

### Astro Viewer

[App page](https://appshunter.io/ios/app/astro-viewer/id6755899238)

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

**In-app purchases:** none


### NAIIVE

[App page](https://appshunter.io/ios/app/naiive/id6758065886)

This tool visualizes and analyzes atomistic simulations. It supports various scientific formats like LAMMPS, VASP, and GAMESS, along with machine-learning force field formats. It's designed for researchers and students in scientific fields.

**Highlights:** Atomistic simulation visualization, Analysis tool, LAMMPS support, VASP support, GAMESS support, Machine-learning format support

**Features:** iPhone Duo support

**In-app purchases:** none


## Frequently asked questions

### Is Astro Viewer free?

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

### Is NAIIVE free?

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

### Do Astro Viewer or NAIIVE have ads?

Neither Astro Viewer nor NAIIVE shows ads.

### Which is updated more often, Astro Viewer or NAIIVE?

Astro Viewer ships an update every 4 months, and NAIIVE monthly. Most recently, Astro Viewer was updated on November 4, 2026 and NAIIVE on October 31, 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.*