# YAML Tools vs Mdly

The clearest difference is chart position: YAML Tools at #1 against Mdly's #160. YAML Tools also leads on price ($0.99 vs $1.99) and iOS requirement (15.6 vs 18.0). Mdly's advantage is update cadence (every 2 weeks vs monthly). On ads, in-app purchases, monetization model and device support there is nothing between them.

YAML Tools costs $0.99 and Mdly $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

YAML Tools ships an update monthly, Mdly every 2 weeks. The most recent releases landed on October 6, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | YAML Tools | Mdly |
| --- | --- | --- |
| Price | **$0.99** | $1.99 |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/yaml-tools/id6758571420/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 2 weeks** |
| Monetization | Paid | Paid |
| Best chart rank | **#1** | #160 |
| Size | 30 MB | 16 MB |
| Requires iOS | **15.6** | 18.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Mohammed Aadhil](https://appshunter.io/developer/1526081218) | [Yuta Hoshina](https://appshunter.io/developer/1822046671) |

## What reviewers say

### YAML Tools

[App page](https://appshunter.io/ios/app/yaml-tools/id6758571420)

**Currently charting:** #1 Top Paid · Developer Tools, #125 Top Grossing · Developer Tools (US App Store)

A comprehensive YAML utility for developers on iOS. Visualize, format, convert, and generate code from YAML files. Includes validation and a dedicated syntax keyboard for efficient editing.

**Highlights:** Interactive Tree and Table View for YAML visualization, Convert YAML to JSON, XML, CSV, and more, Generate type-safe model classes for multiple languages, Real-time JSON Schema generation and validation, Dedicated YAML syntax keyboard overlay, Format and minify YAML structures

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

**In-app purchases:** none


### Mdly

[App page](https://appshunter.io/ios/app/mdly-markdown-viewer/id6759057599)

**Currently charting:** #160 Top Paid · Developer Tools (US App Store)

This app provides a fast, read-only experience for viewing Markdown and Mermaid files across Apple devices. It offers seamless iCloud synchronization, powerful rendering of modern Markdown features, and inline support for various Mermaid diagrams, all within a distraction-free interface.

**Highlights:** Read-only Markdown viewing, Mermaid diagram rendering, iCloud Drive integration, Full-text search, Table of Contents navigation, Dark and light themes

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is YAML Tools free?

YAML Tools costs $0.99, with no in-app purchases.

### Is Mdly free?

Mdly costs $1.99, with no in-app purchases.

### Do YAML Tools or Mdly have ads?

Neither YAML Tools nor Mdly shows ads.

### Which is updated more often, YAML Tools or Mdly?

YAML Tools ships an update monthly, and Mdly every 2 weeks. Most recently, YAML Tools was updated on October 6, 2026 and Mdly on September 30, 2026.

### Which is more popular, YAML Tools or Mdly?

YAML Tools currently peaks at #1 in the App Store charts, and Mdly at #160. Chart position reflects recent download velocity rather than total install base.

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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.*