Best Margins Development Apps

Obsidian - Connected Notes

Your second brain on the go

Free

Organize your thoughts and ideas with a powerful knowledge base that utilizes local Markdown files. This app acts as your personal second brain, accessible on your mobile device for seamless note-taking and idea connection.

Combine - Code Editor & Git

Code Editor and Git Client

Free

Transform your mobile device into a professional coding studio. This app offers advanced code editing, live previews, and comprehensive Git integration for developers on the go. Work offline, debug efficiently, and manage your projects seamlessly.

Billion Betting Club

by Appy Monkey - App Developers

Free

This service provides expert football betting tips with a focus on maximizing return on investment. Receive instant notifications for pre-game and in-play tips, directly linked to bookmakers for fast placement. Designed for punters and serious profit seekers.

Adaptivity (B)

For developers & designers

Free

Visualize how app layouts appear on various devices and adapt to different settings like orientation, multitasking, and text size changes. This free version offers essential tools for developers and designers to preview their work.

Adaptivity (A)

SF Symbols and other dev tools

$7.99

Visualize how app layouts adapt to different screen sizes, orientations, and dynamic text settings on iOS and iPadOS devices. Explore SF Symbols, system colors, fonts, and materials with detailed information and previews.

Novalist - Novel Writing

The workspace for novelists

Free

A dedicated writing environment for novelists to plan, build worlds, and write manuscripts. It offers a clean editor with advanced features, a comprehensive world-building codex, and flexible organizational tools. Your writing is stored in plain files on your device, ensuring ownership and longevity.

Book & Story Writing — Fabula

Plot Maker, World Building

Free

This app helps writers organize their story ideas into a structured novel. It allows for character development, scene planning, and world-building, keeping all your creative elements accessible even offline.

Adaptivity (C)

For developers & designers

Free

Visualize layout elements like Size Classes, margins, and safe areas on devices. See how these adapt to orientation and Dynamic Type changes. This free version offers core features for developers and designers.

Quille: Write & Worldbuild

Novel & Story Planner

Free

Organize your fiction writing projects with a structured workspace. Manage notes, timelines, outlines, characters, and scenes in one place to transform scattered ideas into a clear writing plan.

Keylines

Design Tools for Layout Grid

Free

Overlay a customizable grid on screenshots to accurately measure layout dimensions, margins, and padding. This tool streamlines design and development workflows by enabling detailed analysis of app interfaces.