# Invent Idea vs Patent Monster

The clearest difference is review sentiment: Invent Idea at 100% against Patent Monster's 0%. Invent Idea also leads on monetization model (free vs paid) and ads (none vs shown). On price, update cadence, in-app purchases and device support there is nothing between them.

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

Invent Idea ships an update monthly, Patent Monster every 2 months. Both last shipped on November 3, 2026.

## The numbers

| Metric | Invent Idea | Patent Monster |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (3 ratings)](https://appshunter.io/ios/app/invent-idea/id1618064926/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | **100.0% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Monthly** | Every 2 months |
| Monetization | **Free** | Paid |
| Size | 84 MB | 25 MB |
| Requires iOS | **16.0** | 16.2 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Montgomery Innovation Partners and Associates LLC](https://appshunter.io/developer/1618064928) | [Yongjun Lee](https://appshunter.io/developer/1550041806) |

## What reviewers say

### Invent Idea

[App page](https://appshunter.io/ios/app/invent-idea/id1618064926)

Explore if your invention idea is unique with a free patent search tool. Access millions of U.S. patents to find similar inventions using keywords. This app empowers everyday inventors with professional-grade tools.

**Highlights:** Free patent search tool, Keyword search for similar inventions, Access to Utility and Design patents, Privacy for invention ideas, Downloadable eBook on patent myths, Customer support

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


### Patent Monster

[App page](https://appshunter.io/ios/app/patent-monster/id1668660596)

Easily search and store patent information on your iPhone. This straightforward application allows for quick access to patent data and provides a simple way to save relevant findings.

**Highlights:** Simple patent search, Store patent information, iPhone compatibility, User-friendly interface

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

**In-app purchases:** none


## Frequently asked questions

### Is Invent Idea free?

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

### Is Patent Monster free?

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

### Do Invent Idea or Patent Monster have ads?

Patent Monster shows ads; Invent Idea does not.

### Which is updated more often, Invent Idea or Patent Monster?

Invent Idea ships an update monthly, and Patent Monster every 2 months. Most recently, Invent Idea was updated on November 3, 2026 and Patent Monster on November 3, 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.*