# ROSA vs Periodic Table Ultimate

The clearest difference is in-app purchases: ROSA at none against Periodic Table Ultimate's 3. ROSA also leads on device support (3 vs 1) and ratings volume (3 vs 1). Periodic Table Ultimate's advantage is update cadence (every 3 days vs every 3 weeks) and rating (5.0 vs 4.7). On price, review sentiment and ads there is nothing between them.

Both are free to download. Periodic Table Ultimate sells 3 in-app purchases, starting at $2.99 per month. ROSA asks for nothing beyond the download.

Periodic Table Ultimate holds the better App Store score, 5.0 against 4.7. Both are backed by a comparable volume of ratings — 3 and 1 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

ROSA ships an update every 3 weeks, Periodic Table Ultimate every 3 days. The most recent releases landed on September 8, 2026 and August 15, 2026 respectively.

## The numbers

| Metric | ROSA | Periodic Table Ultimate |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (3 ratings)](https://appshunter.io/ios/app/rosa/id1303840802/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/periodic-table-ultimate/id6749167499/reviews)** |
| Number of ratings | **3** | 1 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 3 days** |
| Monetization | **Free** | Freemium |
| Size | 130 MB | 48 MB |
| Requires iOS | **10.3** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [International Rescue Committee, Inc.](https://appshunter.io/developer/1303840801) | [Denis Chashchin](https://appshunter.io/developer/493558586) |

## What reviewers say

### ROSA

[App page](https://appshunter.io/ios/app/rosa/id1303840802)

This app provides remote skill-building and supervision for case workers and community focal points. It offers key content on gender-based violence, case management, and communication skills, along with assessments and a community space for facilitated discussions.

**Highlights:** Gender-based violence knowledge, Case management skills, Communication and attitude skills, Self-administered skills assessments, Supervisor-administered skills assessments, Community discussion space, Remote supervision tools

**Features:** macOS Compatibility

**In-app purchases:** none


### Periodic Table Ultimate

[App page](https://appshunter.io/ios/app/periodic-table-ultimate/id6749167499)

Explore chemistry with an interactive periodic table and 3D atom models. Features offline info cards, augmented reality, and an AI tutor for personalized learning. Customize your study experience with themes and dark mode.

**Highlights:** Interactive Periodic Table, Offline element info cards, Augmented Reality 3D atom models, AI Tutor for explanations, Customizable color themes, Dark Mode support, Atomic spectra and radius visuals

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ChemAI Tutor | $2.99 | per month |
| Data | $2.99 | per month |
| Ultimate | $4.99 | per month |


## Frequently asked questions

### Is ROSA free?

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

### Is Periodic Table Ultimate free?

Periodic Table Ultimate is free to download, with in-app purchases available.

### Which has better reviews, ROSA or Periodic Table Ultimate?

Periodic Table Ultimate is rated higher. ROSA averages 4.7 out of 5 from 3 ratings, while Periodic Table Ultimate averages 5.0 from 1 ratings.

### Do ROSA or Periodic Table Ultimate have ads?

Neither ROSA nor Periodic Table Ultimate shows ads.

### Which is updated more often, ROSA or Periodic Table Ultimate?

ROSA ships an update every 3 weeks, and Periodic Table Ultimate every 3 days. Most recently, ROSA was updated on September 8, 2026 and Periodic Table Ultimate on August 15, 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.*