# Data21 — Patent: BR 512021000013-7

> Anonymous data and feedback collection for product and business insights. (iPhone/iPad app by Alexandre Alves da Costa.)

- Source: https://appshunter.io/ios/app/data21/id1350287433 (this page in markdown: same URL + `.md`)
- Developer: [Alexandre Alves da Costa](https://appshunter.io/developer/1111954461)
- Category: Business, Shopping
- Price: Free
- Rating: 5.00/5 from 1 App Store ratings
- Age rating: 17+
- Requires: iOS 26.4 · 24 MB
- Languages: American English
- Released: 2018-02-19
- Data updated: 2026-08-26
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/data21/id1350287433/reviews.md

## What is Data21?

Software Patent/INPI Register : BR 512021000013-7. In this application you can mark and collect important (anonymously) data and feedbacks about your product and business. The largest companies in the world collect data to receive bigger investments, to sell more and buy better (Nesse aplicativo você pode marcar e coletar importantes dados anônimos e feedbacks sobre o seu produto e negócio. As maiores empresas do mundo coletam dados para receber maiores investimentos, pra vender mais e comprar melhor.

## Key features

- Anonymous data collection
- Product feedback gathering
- Business insights
- Investment data support
- Sales improvement data
- Purchasing optimization data


## Frequently asked questions about Data21

### What is Data21 used for?

Data21 is used to anonymously mark and collect important data and feedback about your product and business. This helps in making better investment, sales, and purchasing decisions.

### Is Data21 free to use?

Yes, Data21 is available for free. The app is listed as 'Free' and does not mention any costs associated with its use.

### What devices does Data21 support?

Data21 is supported on iPhone, iPad, and iPod devices.

### What is the age rating for Data21?

Data21 has an age rating of 17+, indicating it is intended for mature users.

### How often is Data21 updated?

The latest version of Data21 is 37, and it was last updated on June 16, 2026. This suggests a regular update schedule.

### Does Data21 have ads?

No, Data21 does not contain advertisements. The app is listed with 'hasAds' as false.

### What is the user sentiment for Data21?

Based on the available rating, Data21 has a perfect score of 5.0 stars from 1 rating, indicating very positive initial user sentiment.

### Can I integrate Data21 with other business tools?

The provided description does not specify integration capabilities with other business tools. Its primary function is data and feedback collection within the app itself.

## Version history (last 5 releases)

### 51 — 2026-08-24

New Fashion Retail Intelligence !

### 39 — 2026-07-05

Search Bar Content !

### 37 — 2026-06-16

New Cards to Collect Data (Distribution,Engagement,Awareness)

### 36 — 2026-06-12

New UX Data Cards and New Info Available on the Address Section !

### 35 — 2026-06-10

New UX for The Data Cards !

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## More apps by Alexandre Alves da Costa

- [Sale1](https://appshunter.io/ios/app/sale1/id1111954462)
- [SaleFlow](https://appshunter.io/ios/app/saleflow/id1326654435)

All apps by Alexandre Alves da Costa: https://appshunter.io/developer/1111954461

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-26.*