# DocB vs PreviewFit

The clearest difference is update cadence: DocB at every 4 days against PreviewFit's every 2 weeks. DocB also leads on iOS requirement (18.0 vs 26.0). On price, ads, in-app purchases and monetization model there is nothing between them.

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

DocB ships an update every 4 days, PreviewFit every 2 weeks. The most recent releases landed on October 30, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | DocB | PreviewFit |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/docb-better-documentation/id6736964512/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 2 weeks |
| Monetization | Free | Free |
| Size | 18 MB | 6 MB |
| Requires iOS | **18.0** | 26.0 |
| Devices | **iPhone, iPad, Mac, Vision Pro** | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [MCRICH LLC](https://appshunter.io/developer/1552806643) | [Appmost AB](https://appshunter.io/developer/1656662512) |

## What reviewers say

### DocB

[App page](https://appshunter.io/ios/app/docb-better-documentation/id6736964512)

This native documentation app organizes API references for developers. It allows users to import various DocC sources, search them instantly, and save important pages for quick access. Stop switching between browser tabs and get answers faster with a unified reference library.

**Highlights:** Native DocC documentation reader, Import custom DocC websites, Cross-source search functionality, Save bookmarks and collections, CloudKit sync across devices, Distraction-free browsing

**In-app purchases:** none


### PreviewFit

[App page](https://appshunter.io/ios/app/previewfit-app-preview-fixer/id6765727606)

Easily transform screen recordings into App Store-ready preview videos. This tool automatically detects orientation and dimensions, trims to 30 seconds, and removes black bars for a clean export. It's designed for developers and marketers to create professional app preview content.

**Highlights:** Smart device output suggestions, Resize and center-crop, 30-second trimming, MOV and MP4 export, Optional audio removal, App Store requirement checks

**In-app purchases:** none


## Frequently asked questions

### Is DocB free?

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

### Is PreviewFit free?

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

### Do DocB or PreviewFit have ads?

Neither DocB nor PreviewFit shows ads.

### Which is updated more often, DocB or PreviewFit?

DocB ships an update every 4 days, and PreviewFit every 2 weeks. Most recently, DocB was updated on October 30, 2026 and PreviewFit on November 3, 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.*