# Data21 vs Q

The clearest difference is update cadence: Data21 at every 5 days against Q's every 25 months. Q's advantage is iOS requirement (11.0 vs 26.4). On price, rating, ratings volume and ads there is nothing between them.

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

On the App Store both sit at effectively the same score — 5.0 for Data21 against 5.0 for Q. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

Data21 ships an update every 5 days, Q every 25 months. The most recent releases landed on October 10, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Data21 | Q |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/data21/id1350287433/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/q-aud/id1475072361/reviews) |
| Number of ratings | 1 | 1 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 25 months |
| Monetization | Free | Free |
| Size | 34 MB | 57 MB |
| Requires iOS | 26.4 | **11.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Alexandre Alves da Costa](https://appshunter.io/developer/1111954461) | [ThinkPalm Technologies Pvt. Ltd.](https://appshunter.io/developer/496195951) |

## 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


### Q

[App page](https://appshunter.io/ios/app/q-aud/id1475072361)

This application streamlines the audit process, offering a digital, portable, and paperless solution. It automates procedures, reduces audit time, and provides a secure platform for internal audits and inspections with real-time evidence collection and automated report generation.

**Highlights:** Automated audit procedures, Paperless auditing solution, Real-time evidence collection, Automated PDF report generation, Secure cloud hosting, Checklist creation and assignment

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Data21 free?

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

### Is Q free?

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

### Which has better reviews, Data21 or Q?

Data21 and Q are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do Data21 or Q have ads?

Neither Data21 nor Q shows ads.

### Which is updated more often, Data21 or Q?

Data21 ships an update every 5 days, and Q every 25 months. Most recently, Data21 was updated on October 10, 2026 and Q on October 12, 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.*