ScreenTwin: measure screenshot
Screenshot Design Inspector
Free · In‑App Purchases · Designed for iPad
Now with AI component detection, 8-point grid scoring and design tokens. Turn any screenshot into measurements, colors, type and code — all on your device.
ScreenTwin turns any screenshot into an interactive design inspection canvas. Measure spacing, sample colors, read typography, and export developer-ready specs — without leaving your phone.
MEASURE ANYTHING
• Distance, width and height between any two points
• Horizontal and vertical guides that snap to detected edges
• Zoom to 20× for sub-pixel work
• Smart snapping to edges, centers, baselines and equal spacing
• A floating ruler you can drag and rotate, with a live angle readout
• Units in px, pt, dp, mm, cm or inches — or define your own
INSPECT EVERY DETAIL
• Long-press anywhere for a magnified eyedropper
• Every notation: HEX, RGB, HSL, HSB, CMYK, LAB, LCH, OKLab, OKLCH
• Copy-ready Flutter, SwiftUI, UIColor, Compose and CSS literals
• WCAG contrast ratios against white and black
• Color harmonies and 50–900 tonal ramps generated in OKLCH
• On-device OCR estimates font size, weight and line height
ANALYZE THE LAYOUT
• Detects buttons, cards, icons, avatars, navigation bars, tab bars, text fields and dividers
• Every detection shows its confidence and the rule behind it
• Automatic spacing analysis: gaps, padding, margins and element sizes
• A 0–100 score for how closely a design follows an 8-point grid
• The spacing scale your screen actually uses
EXPORT DEVELOPER-READY SPECS
• Annotated PNG and machine-readable JSON
• PDF spec sheets for handoff
• Paste-ready SwiftUI and Flutter code
• Design tokens as a Flutter theme, SwiftUI, CSS variables, JSON or W3C Design Tokens
REVIEW TOGETHER
• Comment pins, arrows, highlights, rectangles and freehand marks
• Status and resolve tracking on every note
• Compare two versions with slider, split, overlay or difference modes
PRIVATE BY DESIGN
Everything runs on your device. Your screenshots never leave your phone, and the app works fully offline.
FREE
Manual measurement, OCR typography, the color picker, and PNG and JSON export.
PRO
AI component detection, spacing analysis, design tokens, compare mode, unlimited projects, and PDF, SwiftUI and Flutter export.
MADE FOR
iOS and Flutter developers, UI/UX designers, QA engineers and product teams.
Privacy Policy:
https://screentwin.netlify.app/privacy
Terms of Use (EULA):
https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, Mohammad Imran Mia, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Mohammad Imran Mia
- Size
- 87.8 MB
- Category
- Graphics & Design
- Compatibility
Requires iOS 15.5 or later.
- iPhone
Requires iOS 15.5 or later. - iPad
Requires iPadOS 15.5 or later. - iPod touch
Requires iOS 15.5 or later. - Mac
Requires macOS 12.4 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Premium Yearly $29.99
- Premium Monthly $5.99
- Premium Weekly $2.99
- Copyright
- © 2026