# Trajectory vs MarkFlow

The clearest difference is in-app purchases: Trajectory at none against MarkFlow's 3. MarkFlow's advantage is ads (none vs shown) and update cadence (weekly vs fortnightly). On price there is nothing between them.

Both are free to download. MarkFlow sells 3 in-app purchases, starting at $2.99 per month. Trajectory asks for nothing beyond the download.

Trajectory ships an update fortnightly, MarkFlow weekly. The most recent releases landed on November 14, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Trajectory | MarkFlow |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.5 (4 ratings)](https://appshunter.io/ios/app/markflowread-markdown-files/id6755079420/reviews)** |
| Number of ratings | — | **4** |
| Positive reviews | — | 75.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Fortnightly | **Weekly** |
| Monetization | — | Free with in-app purchases |
| Size | 36 MB | 45 MB |
| Requires iOS | 17.7.2 | **13.0** |
| Devices | iPhone | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Hideaki Uchikoshi](https://appshunter.io/developer/1559575002) | [望 余](https://appshunter.io/developer/1595522298) |

## What reviewers say

### Trajectory

[App page](https://appshunter.io/ios/app/trajectory-detection/id6511212764)

**Features:** macOS Compatibility

**In-app purchases:** none


### MarkFlow

[App page](https://appshunter.io/ios/app/markflowread-markdown-files/id6755079420)

A clean and fast reader for Markdown files, offering a comfortable, book-like experience with customizable themes and adjustable text. Easily navigate, search, and share your documents, with developer-friendly features like syntax highlighting.

**Highlights:** Book-like reading layout, Multiple reading themes and dark mode, Adjustable text size, Table of contents generation, In-document search, Syntax highlighting for code blocks, Export to PDF

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium | $2.99 | per month |
| Yearly Premium | $19.99 | per year |
| Lifetime Access | $12.99 | one-time |


## Frequently asked questions

### Is Trajectory free?

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

### Is MarkFlow free?

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

### Do Trajectory or MarkFlow have ads?

Trajectory shows ads; MarkFlow does not.

### Which is updated more often, Trajectory or MarkFlow?

Trajectory ships an update fortnightly, and MarkFlow weekly. Most recently, Trajectory was updated on November 14, 2026 and MarkFlow on October 30, 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.*