# CENTRAL AEROSPACE vs MD Preview

The clearest difference is in-app purchases: CENTRAL AEROSPACE at none against MD Preview's 1. CENTRAL AEROSPACE also leads on iOS requirement (13.0 vs 16.6). MD Preview's advantage is update cadence (every 2 days vs fortnightly). On price, ads and device support there is nothing between them.

Both are free to download. MD Preview sells 1 one-off in-app purchase. CENTRAL AEROSPACE asks for nothing beyond the download.

CENTRAL AEROSPACE ships an update fortnightly, MD Preview every 2 days. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | CENTRAL AEROSPACE | MD Preview |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (31 ratings)](https://appshunter.io/ios/app/md-preview/id6759583159/reviews)** |
| Number of ratings | — | **31** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 2 days** |
| Monetization | — | Free with in-app purchases |
| Size | 37 MB | 5 MB |
| Requires iOS | **13.0** | 16.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Sense Digital SAS](https://appshunter.io/developer/1525316895) | [Gejun Zhu](https://appshunter.io/developer/1879637857) |

## What reviewers say

### CENTRAL AEROSPACE

[App page](https://appshunter.io/ios/app/central-aerospace/id6502797605)

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

**In-app purchases:** none


### MD Preview

[App page](https://appshunter.io/ios/app/md-preview/id6759583159)

This app provides a clean and elegant way to read markdown files from various cloud storage services. It offers beautiful formatting, syntax highlighting for numerous programming languages, and customizable themes. An optional one-time purchase unlocks additional features like PDF export and custom font sizes.

**Highlights:** Open .md files from cloud storage, Beautifully formatted markdown rendering, Syntax highlighting for 180+ languages, Toggle between preview and raw markdown, Collapsible table of contents, 6 free reading themes, Export to PDF (premium)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| MD Preview Premium | $2.99 | one-time |


## Frequently asked questions

### Is CENTRAL AEROSPACE free?

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

### Is MD Preview free?

MD Preview is free to download, with in-app purchases available.

### Do CENTRAL AEROSPACE or MD Preview have ads?

Neither CENTRAL AEROSPACE nor MD Preview shows ads.

### Which is updated more often, CENTRAL AEROSPACE or MD Preview?

CENTRAL AEROSPACE ships an update fortnightly, and MD Preview every 2 days. Most recently, CENTRAL AEROSPACE was updated on October 25, 2026 and MD Preview on October 24, 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.*