# ExtraDoc vs InterFast

The clearest difference is update cadence: InterFast at every 2 weeks against ExtraDoc's every 5 weeks. On price, ads, in-app purchases and device support there is nothing between them.

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

ExtraDoc ships an update every 5 weeks, InterFast every 2 weeks. The most recent releases landed on September 10, 2026 and September 16, 2026 respectively.

## The numbers

| Metric | ExtraDoc | InterFast |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 2 weeks** |
| Monetization | — | Free |
| Size | 14 MB | 61 MB |
| Requires iOS | 15.0 | 15 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [QSC](https://appshunter.io/developer/1291352938) | [Interfast](https://appshunter.io/developer/1536410981) |

## What reviewers say

### ExtraDoc

[App page](https://appshunter.io/ios/app/extradoc/id1481349309)

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

**In-app purchases:** none


### InterFast

[App page](https://appshunter.io/ios/app/interfast/id1536410979)

This all-in-one construction app simplifies business management with tools for quotes, invoices, and client portals. It offers features for project planning, site management, and financial tracking, including bank connections.

**Highlights:** Quotes, Invoices, Credit Notes, Price Library, Treasury & Bank Connection, Scheduling, Site & Intervention Management, Client Management & Portal

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is ExtraDoc free?

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

### Is InterFast free?

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

### Do ExtraDoc or InterFast have ads?

Neither ExtraDoc nor InterFast shows ads.

### Which is updated more often, ExtraDoc or InterFast?

ExtraDoc ships an update every 5 weeks, and InterFast every 2 weeks. Most recently, ExtraDoc was updated on September 10, 2026 and InterFast on September 16, 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.*