# MoleculeMastery vs Factor Fuse

The clearest difference is in-app purchases: MoleculeMastery at none against Factor Fuse's 3. MoleculeMastery also leads on ads (none vs shown) and update cadence (daily vs every 3 days). Factor Fuse's advantage is iOS requirement (13.0 vs 17.2). On price and device support there is nothing between them.

Both are free to download. Factor Fuse sells 3 one-off in-app purchases. MoleculeMastery asks for nothing beyond the download.

MoleculeMastery ships an update daily, Factor Fuse every 3 days. Both last shipped on October 10, 2026.

## The numbers

| Metric | MoleculeMastery | Factor Fuse |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Daily** | Every 3 days |
| Size | 33 MB | 187 MB |
| Requires iOS | 17.2 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Muhammad Arsy Rizkia Ruslan](https://appshunter.io/developer/1748434513) | [Khylle Lim](https://appshunter.io/developer/1765666121) |

## What reviewers say

### MoleculeMastery

[App page](https://appshunter.io/ios/app/moleculemastery/id6627338118)

**In-app purchases:** none


### Factor Fuse

[App page](https://appshunter.io/ios/app/factor-fuse-number-master/id6670305040)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Smart Bundle | $0.99 | one-time |
| Genius Bundle | $6.99 | one-time |
| Genius Bundle + (No Ads) | $6.99 | one-time |


## Frequently asked questions

### Is MoleculeMastery free?

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

### Is Factor Fuse free?

Factor Fuse is free to download, with in-app purchases available.

### Do MoleculeMastery or Factor Fuse have ads?

Factor Fuse shows ads; MoleculeMastery does not.

### Which is updated more often, MoleculeMastery or Factor Fuse?

MoleculeMastery ships an update daily, and Factor Fuse every 3 days. Most recently, MoleculeMastery was updated on October 10, 2026 and Factor Fuse on October 10, 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.*