# Search PubChem vs Perse Visualizer

The clearest difference is ads: Search PubChem at none against Perse Visualizer's shown. Search PubChem also leads on review sentiment (75% vs 50%) and monetization model (free vs ad-supported). Perse Visualizer's advantage is update cadence (every 2 months vs every 9 months) and iOS requirement (12.0 vs 26.0). On price, rating, ratings volume and in-app purchases 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 Search PubChem against 5.0 for Perse Visualizer. Both are backed by a comparable volume of ratings — 5 and 7 respectively. Written reviews are what separate them: 75% of Search PubChem's written reviews are positive against 50% of Perse Visualizer's.

Search PubChem ships an update every 9 months, Perse Visualizer every 2 months. The most recent releases landed on June 1, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | Search PubChem | Perse Visualizer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (5 ratings)](https://appshunter.io/ios/app/search-pubchem/id1369742632/reviews) | [5.0 (7 ratings)](https://appshunter.io/ios/app/perse-visualizer/id1476999836/reviews) |
| Number of ratings | 5 | **7** |
| Positive reviews | **75.0% of reviews** | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 9 months | **Every 2 months** |
| Monetization | **Free** | Ad-supported |
| Size | 9 MB | 24 MB |
| Requires iOS | 26.0 | **12.0** |
| Devices | **iPhone, iPad, Mac, Vision Pro** | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Jae-Seung Lee](https://appshunter.io/developer/1146296876) | [Dylan Riffle](https://appshunter.io/developer/1142744409) |

## What reviewers say

### Search PubChem

[App page](https://appshunter.io/ios/app/search-pubchem/id1369742632)

Access and manage chemical compound data from the PubChem database. Search for over 111 million compounds, view molecular formulas, weights, and structures, and create and track custom solutions with detailed composition information.

**Highlights:** Search PubChem database, View molecular formula, weight, and structure, Store compound information, Create and manage custom solutions, Track solution composition in grams and moles, Display 3D compound structures, Share solution data via CSV

**In-app purchases:** none


### Perse Visualizer

[App page](https://appshunter.io/ios/app/perse-visualizer/id1476999836)

Visualize protein structures on your mobile device. Search the protein data bank by name or ID and display them in various styles like cartoon or ball and stick. Ideal for biology students and researchers.

**Highlights:** Protein visualization, Search by name or ID, Multiple display styles, Access to protein data bank, Educational tool

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Search PubChem free?

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

### Is Perse Visualizer free?

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

### Which has better reviews, Search PubChem or Perse Visualizer?

Search PubChem and Perse Visualizer are both rated 5.0 out of 5 on the App Store, from 5 and 7 ratings respectively.

### Do Search PubChem or Perse Visualizer have ads?

Perse Visualizer shows ads; Search PubChem does not.

### Which is updated more often, Search PubChem or Perse Visualizer?

Search PubChem ships an update every 9 months, and Perse Visualizer every 2 months. Most recently, Search PubChem was updated on June 1, 2026 and Perse Visualizer on September 9, 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.*