# OGP Auditor vs Data21

The clearest difference is update cadence: Data21 at every 5 days against OGP Auditor's every 5 months. OGP Auditor's advantage is iOS requirement (9.1 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 OGP Auditor against 5.0 for Data21. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

OGP Auditor ships an update every 5 months, Data21 every 5 days. The most recent releases landed on October 7, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | OGP Auditor | Data21 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/ogp-auditor/id994928530/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/data21/id1350287433/reviews) |
| Number of ratings | **2** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 5 days** |
| Monetization | Free | Free |
| Size | 49 MB | 34 MB |
| Requires iOS | **9.1** | 26.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [Applications International Corp](https://appshunter.io/developer/994928529) | [Alexandre Alves da Costa](https://appshunter.io/developer/1111954461) |

## What reviewers say

### OGP Auditor

[App page](https://appshunter.io/ios/app/ogp-auditor/id994928530)

This app allows users to conduct pre-built audits and evaluations offline or online. It supports various subject matters including health, safety, environmental, and security assessments. Downloadable evaluations are sourced from client databases.

**Highlights:** Offline and online audit capabilities, Pre-built audit templates, Supports health, safety, environmental, and security topics, Downloadable evaluations from client databases, Cross-device compatibility

**Features:** macOS Compatibility

**In-app purchases:** none


### 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


## Frequently asked questions

### Is OGP Auditor free?

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

### Is Data21 free?

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

### Which has better reviews, OGP Auditor or Data21?

OGP Auditor and Data21 are both rated 5.0 out of 5 on the App Store, from 2 and 1 ratings respectively.

### Do OGP Auditor or Data21 have ads?

Neither OGP Auditor nor Data21 shows ads.

### Which is updated more often, OGP Auditor or Data21?

OGP Auditor ships an update every 5 months, and Data21 every 5 days. Most recently, OGP Auditor was updated on October 7, 2026 and Data21 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.*