# DOCUframe2 vs ENGINE4

The clearest difference is iOS requirement: DOCUframe2 at 13.0 against ENGINE4's 15.5. On price, update cadence, ads and in-app purchases there is nothing between them.

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

DOCUframe2 ships an update every 6 weeks, ENGINE4 monthly. Both last shipped on September 17, 2026.

## The numbers

| Metric | DOCUframe2 | ENGINE4 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 14.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Monthly** |
| Monetization | Free | — |
| Size | 28 MB | 86 MB |
| Requires iOS | **13.0** | 15.5 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [GSD Software](https://appshunter.io/developer/451773679) | [Mobile Function GmbH](https://appshunter.io/developer/593506225) |

## What reviewers say

### DOCUframe2

[App page](https://appshunter.io/ios/app/docuframe2/id989153456)

Access comprehensive business management tools on your iOS device. This platform integrates document management, CRM, communication, and project administration for efficient enterprise operations. Optimize internal processes and customer relations with advanced features.

**Highlights:** Document and address management, Integrated CRM functionalities, Email, fax, SMS, and telephony, Project, campaign, and event management, Workflow and process management, Time recording, Customizable with DOCUcontrol®

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


### ENGINE4

[App page](https://appshunter.io/ios/app/engine4/id1105393634)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is DOCUframe2 free?

DOCUframe2 is free to download, with no in-app purchases.

### Is ENGINE4 free?

ENGINE4 is free to download, with no in-app purchases.

### Do DOCUframe2 or ENGINE4 have ads?

Neither DOCUframe2 nor ENGINE4 shows ads.

### Which is updated more often, DOCUframe2 or ENGINE4?

DOCUframe2 ships an update every 6 weeks, and ENGINE4 monthly. Most recently, DOCUframe2 was updated on September 17, 2026 and ENGINE4 on September 17, 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.*