Features

Every format trains a different skill.

Dev Gym is built from short formats that fit around a working day. Each one asks for a different kind of thinking, and every answer moves your Skill Map.

Daily Workout

What it is: One set of five reps a day, built from your training split and the areas your Skill Map says are fading.
Why it matters: Each rep asks for a different kind of thinking: recall, predict, find the bug, review a PR, explain it. Short enough to do every day, varied enough that you can’t coast.

Workout · Rep

Quick Rep

What it is: A single rep on its own. Answer it on Apple Watch, or on any device when you have a minute.
Why it matters: Practice still happens on the days a full workout won’t fit, and the answer counts toward your Skill Map like any other rep.

Watch · Quick Rep

PR Drill

What it is: A pull request to review: the diff, its description and the job of the reviewer. Leave the comments you would leave at work, then compare them with the authored review.
Why it matters: Reviewing code you didn’t write, much of it generated, is now a daily part of the job. A PR Drill is practice at catching what a diff hides.

Mac · PR Drill in three columns

60/60

What it is: A 60-second lesson and one quick question, sent at times you choose and drawn from your training split. Your answer counts as a rep.
Why it matters: Small, spaced lessons keep a topic fresh between workouts, at the moments in your day that you picked.

60/60 · Lesson and question

Learn paths

What it is: A structured path through a framework or a skill, taught with visual explanations: diagrams that show what the code does, one step at a time.
Why it matters: Some topics need teaching before they can be practised. A path teaches the idea, then your workouts keep it.

iPad · Lesson with visual explanation

Daily Reads

What it is: One worthwhile read a day from Apple’s documentation, WWDC sessions and the developer community, with a note on why it’s worth your time.
Why it matters: Staying current takes a few minutes a day when the filtering has been done for you. Save a read to come back to it later.

Read · Daily Read

What’s New packages

What it is: Each Swift, SwiftUI and platform release, turned into a package: a 60-second overview, what changed, why it matters, and a refresher you can train.
Why it matters: Release notes tell you what shipped. A package gets the changes that affect you into practice, with links to Apple’s own sources.

Read the What’s New packages on the web

Read · What’s New package

Skill Map

What it is: Every area you train, from strong to fading. Spaced review brings fading topics back before they slip.
Why it matters: You can see where you’re sharp and where you aren’t, and the next workout acts on it. Progress is measured in what you can still do, not in points.

Progress · Skill Map

Mac · iPhone · iPad · Apple Watch

Native on every Apple device.

One free download covers all four, and your progress follows you through iCloud.

iPhone

Your Daily Workout, 60/60 lessons and Daily Reads, wherever you are.

iPad

Learn paths and visual explanations, with the room to see them properly.

Mac

PR Drills in three columns: the diff, its description and your review, side by side.

Apple Watch

Quick Reps and 60/60 answers from your wrist.

Private by design.

Read the Privacy Policy

Your progress stays in your iCloud.

There’s no account to create. Your workouts, Skill Map and saved reads sync through your private iCloud database, which Dev Gym can’t see.

Coaching is graded on your device.

The optional coach reads your written answers on your device. They aren’t sent to Dev Gym or to any AI service.

Start with today’s workout.

Every feature is free. Download Dev Gym for iPhone, iPad, Mac and Apple Watch.

Training formats