Free tools for iOS developers

Check your app name, subtitle, keywords & description against Apple's limits.

Validate your Info.plist, read every key, and catch vague permission strings.

Check your screenshots against Apple's accepted iPhone & iPad sizes.

Generate a fresh, buildable iPhone app idea with name, features & pitch.

Grade your app idea: strengths, weaknesses, fixes & App Store risk.

Get your app idea brutally (and hilariously) roasted by AI.

Crop and resize any image into a 1024×1024 App Store-ready app icon.

Validate your PrivacyInfo.xcprivacy: required-reason APIs, tracking flags & domains.

Compose and test custom URL scheme and universal-link deep links for your app.

Generate & verify the apple-itunes-app meta tag that shows a download banner in Safari.

Validate your associated-domains entitlement: applinks, webcredentials & appclips entries.

Validate your apple-app-site-association JSON for universal links, app clips & shared credentials.

Check your bundle identifier's reverse-DNS format, characters, and common mistakes.

Build an iOS colour palette with light & dark variants and export it as an Xcode Asset Catalog, SwiftUI, or UIKit.

Validate CFBundleShortVersionString & CFBundleVersion, compare versions, and get the next valid increment.

Catch duplicate keys, missing semicolons, malformed entries, and untranslated strings in your localization files.

Compare two .strings or .xcstrings files and find missing, empty, and untranslated keys.

Write beta "What to Test" notes with a live character count against TestFlight's 4,000 limit.

Diff two versions of your App Store description, promotional text, or keywords word by word.

Map your data collection to Apple's App Store privacy sections and export a checklist.

Turn one 1024×1024 icon into a full AppIcon.appiconset zip with every size and Contents.json.

Trim your 100-char keyword field: drop title/subtitle overlaps, duplicates, and wasted spaces.

Turn a feature list into a review-safe, ASO-optimized App Store description, promo text & highlights.

Generate App Store title, subtitle, and a tuned 100-char keyword field from your app concept.

Write clear, Apple-compliant NSCameraUsageDescription-style purpose strings from a plain-English reason.

Paste Apple's rejection message and see which guideline it maps to and exactly what to fix.

Draft a polite, guideline-aware reply to App Review in Resolution Center from their rejection message.

Brainstorm available-sounding, trademark-cautious App Store name and subtitle ideas for your concept.

Test which URLs your AASA file opens in-app vs. hands to Safari, honoring wildcards and exclusions.

Decode a StoreKit 2 / App Store Server signed JWS or notification into readable JSON, right in your browser.