Comparison

Preview App vs YAML Tools

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Preview App

Features
Read full description

Do you want to preview what your app looks like on the app store in advance? Let me help you. First download this app and then edit your app information. You can see the 6.5-inch and 6.9-inch app preview.

About

YAML Tools

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
Read full description

The ultimate YAML toolkit for developers. Visualize, validate, convert, and generate code - all in one powerful, beautifully designed iOS app. YAML Tools is the professional-grade YAML utility built for developers who demand speed, precision, and versatility. Whether you're editing Kubernetes configs, debugging CI/CD pipelines, or generating type-safe model classes, YAML Tools handles it all natively on iPhone and iPad. Visualize & Explore Dive into your YAML with an interactive Tree View and path-based querying. Use the Table View to inspect sequences like a spreadsheet. Rainbow column highlighting makes CSV/TSV output instantly readable. Format & Transform Prettify nested structures with smart indentation or strip whitespace with the Minify engine. Convert YAML to JSON, XML, CSV, TSV, TOML, HTML, Markdown, Base64, and more instantly. Generate Production-Ready Code Export type-safe model classes for Dart, Swift, Kotlin, Java, Python, TypeScript, and C# with intelligent property singularization and pluralization. Stop writing boilerplate, YAML Tools writes it for you. Validate with Confidence Auto-generate JSON Schema from any YAML document, then validate payloads against it in real time. Catch structural errors before they reach production. Built for iOS A dedicated YAML syntax keyboard overlay, native Document Picker integration, and background processing keep the experience fast and fluid, even on large configuration files.

Screenshots

Preview App4 screens
YAML Tools4 screens

Verdict

The call

The clearest difference is update cadence: YAML Tools at monthly against Preview App's every 13 months. YAML Tools also leads on chart position (#106 vs unranked) and price ($0.99 vs $1.99). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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

UpkeepUpdate frequency

Preview App ships an update every 13 months, YAML Tools monthly. The most recent releases landed on September 21, 2026 and September 19, 2026 respectively.

Scorecard3 real differences · 7 level
Preview App versus YAML Tools: the parameters behind the verdict, then further details
ParameterPreview AppYAML Tools
Price$1.99$0.99 — better
Rating—5.0 (1 ratings) — better
Number of ratings—1 — better
Update frequencyEvery 13 monthsMonthly — better
AdsNoNo
In-app purchasesNoNo
Monetization—Paid
Best chart rank—#106 — better
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS15.615.6
Further details — not scored
Size8 MB30 MB
Age rating4+4+
DeveloperCangmu Technology Co., LtdMohammed Aadhil

In-app purchases

None

Preview App

No in-app purchases

None

YAML Tools

No in-app purchases

Questions

Is Preview App free?
Preview App costs $1.99, with no in-app purchases.
Is YAML Tools free?
YAML Tools costs $0.99, with no in-app purchases.
Do Preview App or YAML Tools have ads?
Neither Preview App nor YAML Tools shows ads.
Which is updated more often, Preview App or YAML Tools?
Preview App ships an update every 13 months, and YAML Tools monthly. Most recently, Preview App was updated on September 21, 2026 and YAML Tools on September 19, 2026.

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