# Data21 vs Invent Idea

The clearest difference is update cadence: Data21 at every 5 days against Invent Idea's monthly. Data21 also leads on rating (5.0 vs 4.7). Invent Idea's advantage is ratings volume (3 vs 1) and iOS requirement (16.0 vs 26.4). On price, ads, in-app purchases and monetization model there is nothing between them.

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

Data21 holds the better App Store score, 5.0 against 4.7. Both are backed by a comparable volume of ratings — 1 and 3 respectively.

Data21 ships an update every 5 days, Invent Idea monthly. The most recent releases landed on October 24, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Data21 | Invent Idea |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/data21/id1350287433/reviews)** | [4.7 (3 ratings)](https://appshunter.io/ios/app/invent-idea/id1618064926/reviews) |
| Number of ratings | 1 | **3** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 days** | Monthly |
| Monetization | Free | Free |
| Size | 34 MB | 84 MB |
| Requires iOS | 26.4 | **16.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Alexandre Alves da Costa](https://appshunter.io/developer/1111954461) | [Montgomery Innovation Partners and Associates LLC](https://appshunter.io/developer/1618064928) |

## What reviewers say

### Data21

[App page](https://appshunter.io/ios/app/data21/id1350287433)

This application allows users to anonymously mark and collect important data and feedback about their products and businesses. It's designed to help businesses gather insights for investment, sales, and purchasing decisions.

**Highlights:** Anonymous data collection, Product feedback gathering, Business insights, Investment data support, Sales improvement data, Purchasing optimization data

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

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Data21 free?

Data21 is free to download, with no in-app purchases.

### Is Invent Idea free?

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

### Which has better reviews, Data21 or Invent Idea?

Data21 is rated higher. Data21 averages 5.0 out of 5 from 1 ratings, while Invent Idea averages 4.7 from 3 ratings.

### Do Data21 or Invent Idea have ads?

Neither Data21 nor Invent Idea shows ads.

### Which is updated more often, Data21 or Invent Idea?

Data21 ships an update every 5 days, and Invent Idea monthly. Most recently, Data21 was updated on October 24, 2026 and Invent Idea 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.*