# Junk Rats vs Moleculist

The clearest difference is iOS requirement: Junk Rats at 15.1 against Moleculist's 17.6. On price, update cadence, ads 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.

Junk Rats ships an update every 3 weeks, Moleculist every 2 weeks. The most recent releases landed on November 8, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Junk Rats | Moleculist |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.7 (19 ratings)](https://appshunter.io/ios/app/moleculist/id6747411859/reviews)** |
| Number of ratings | — | **19** |
| Positive reviews | — | 77.8% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 2 weeks** |
| Monetization | — | Free |
| Size | 24 MB | 142 MB |
| Requires iOS | **15.1** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Maximum Cleaning Services Inc.](https://appshunter.io/developer/1440085471) | [Bijjol Rambhia Kiran](https://appshunter.io/developer/1821354717) |

## What reviewers say

### Junk Rats

[App page](https://appshunter.io/ios/app/junk-rats/id6740409088)

**Features:** macOS Compatibility

**In-app purchases:** none


### Moleculist

[App page](https://appshunter.io/ios/app/moleculist/id6747411859)

Organize your life by transforming interests into a cosmic, animated universe. Track books, movies, plants, food, games, people, and more with visually stunning displays and effortless data entry. Seamlessly integrate with other apps to capture discoveries and memories.

**Highlights:** Molecular home screen with animated universe, One-tap adding for various life elements, Automatic data extraction from websites, Detailed tracking with notes and tags, Seamless iPad experience, Smart sharing via Share Sheet, Export and backup functionality

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

**In-app purchases:** none


## Frequently asked questions

### Is Junk Rats free?

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

### Is Moleculist free?

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

### Do Junk Rats or Moleculist have ads?

Neither Junk Rats nor Moleculist shows ads.

### Which is updated more often, Junk Rats or Moleculist?

Junk Rats ships an update every 3 weeks, and Moleculist every 2 weeks. Most recently, Junk Rats was updated on November 8, 2026 and Moleculist 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.*