# Keylines — Design Tools for Layout Grid

> Screenshot grid overlay for measuring app layout dimensions and spacing. (iPhone/iPad app by 明亮 李.)

- Source: https://appshunter.io/ios/app/keylines/id6443838591 (this page in markdown: same URL + `.md`)
- Developer: [明亮 李](https://appshunter.io/developer/1649800454)
- Category: Developer Tools, Graphics & Design
- Price: Free with in-app purchases
- Rating: 5.00/5 from 1 App Store ratings
- Age rating: 4+
- Requires: iOS 15.0 · 2 MB
- Languages: English
- Released: 2022-10-19
- Data updated: 2026-06-01
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/keylines/id6443838591/reviews.md

## What is Keylines?

Draws a grid overlay on screenshot to measure layout sizes, margins and padding. 

The grid speeds up your design and develop process, and lets you analyze other apps too!

And you can even customize the grid size and line colors, etc.

## Key features

- Screenshot grid overlay
- Measure layout sizes
- Analyze margins and padding
- Customizable grid size
- Customizable line colors
- Speeds up design process

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Use Pixel as Coordinates | $0.99 | one-time |



## Frequently asked questions about Keylines

### What can Keylines be used for?

Keylines draws a grid overlay on screenshots to help you measure layout sizes, margins, and padding. This tool is designed to speed up your design and development process and allows you to analyze other apps.

### Is Keylines free to use?

Yes, Keylines is available for free. It does not contain advertisements and offers in-app purchases, though the core functionality is accessible without any cost.

### What devices does Keylines support?

Keylines is compatible with iPhone, iPad, and iPod devices, making it accessible to a wide range of iOS users.

### How often is Keylines updated?

Keylines was last updated on October 19, 2022, with version 1.0.0. Further updates will depend on the developer's release schedule.

### What is the age rating for Keylines?

Keylines has an age rating of 4+, meaning it is suitable for users of all ages.

### Can I customize the grid in Keylines?

Yes, you can customize the grid size and line colors within Keylines to suit your specific measurement needs.

### How accurate is Keylines for measuring layouts?

Keylines provides a grid overlay specifically for measuring layout sizes, margins, and padding, offering precise analysis for design and development.

### Does Keylines have ads?

No, Keylines does not contain advertisements, ensuring an uninterrupted user experience.

## Version history (last 1 release)

### 1.0.0 — 2022-10-19

No release notes.

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## More apps by 明亮 李

- [Pocket Preset](https://appshunter.io/ios/app/pocket-preset/id6738283092)

All apps by 明亮 李: https://appshunter.io/developer/1649800454

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-01.*