# MARVLS vs Sci

The clearest difference is update cadence: Sci at every 2 days against MARVLS's every 5 months. Sci also leads on iOS requirement (15.1 vs 18). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for MARVLS against 5.0 for Sci. Both are backed by a comparable volume of ratings — 2 and 2 respectively.

MARVLS ships an update every 5 months, Sci every 2 days. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | MARVLS | Sci |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/marvls-plasma-physics/id6452503298/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/sci-map/id6560105262/reviews) |
| Number of ratings | 2 | 2 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 2 days** |
| Monetization | Free | Free |
| Size | 210 MB | 33 MB |
| Requires iOS | 18 | **15.1** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Michele McColgan](https://appshunter.io/developer/1532617986) | [Hands On Gainesville Inc](https://appshunter.io/developer/1758431842) |

## What reviewers say

### MARVLS

[App page](https://appshunter.io/ios/app/marvls-plasma-physics/id6452503298)

Explore plasma physics concepts with interactive augmented reality models. Visualize and manipulate these models using your phone and a downloadable Merge Cube. Navigate through various topics and bring complex scientific ideas to life.

**Highlights:** Augmented reality models, Plasma physics concepts, Merge Cube integration, Interactive visualization, Topic navigation

**Features:** macOS Compatibility

**In-app purchases:** none


### Sci

[App page](https://appshunter.io/ios/app/sci-map/id6560105262)

Explore STEM concepts and problem-solving skills through hands-on activities tied to real-world locations. Search activities by site, STEM field, or curriculum standards. Activities are categorized for pre-visit, during-visit, and post-visit engagement.

**Highlights:** Hands-on STEM activities, Location-based exploration, Searchable by site name, Filter by STEM field, Curriculum standard alignment, Pre/during/post visit activities

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is MARVLS free?

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

### Is Sci free?

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

### Which has better reviews, MARVLS or Sci?

MARVLS and Sci are both rated 5.0 out of 5 on the App Store, from 2 and 2 ratings respectively.

### Do MARVLS or Sci have ads?

Neither MARVLS nor Sci shows ads.

### Which is updated more often, MARVLS or Sci?

MARVLS ships an update every 5 months, and Sci every 2 days. Most recently, MARVLS was updated on November 3, 2026 and Sci on October 30, 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.*