Developer · Author · Notetaker
I ship apps,
then write down how — before I forget.
I’m Craig Grummitt, a freelance iOS and mobile developer. I build utilities, games, and writing tools people actually use — and keep a public notebook of the Swift, Flutter, and platform oddities I bump into along the way.
A few things I’ve shipped
Subtitles Viewer
Real-time subtitles for cinema, TV, and streaming. Objective-C → Swift, plus Android in Java.
370k+ downloads · 4.2 ★ · 2014–
Pretty Dictionary
A dictionary that’s actually nice to look at. Built in SwiftUI with definitions, examples, and pronunciations.
SwiftUI · 2026–
Music Vibes
Play or record a melody and feel it through haptic vibrations — music as bone conduction.
4.4 ★ · AudioKit · Core Haptics · 2019–
Rhymer’s Secret
A rhyming dictionary with the extra bits writers actually want. One of a family of word tools.
68k+ downloads · 4.5 ★ · 2019–
Book and course
iOS Development with Swift
A Manning book for experienced developers getting their head around iOS — Swift, adaptive layout, data, networking, and shipping to the App Store. Prefer watching? There’s a companion video course too.
Latest from the notebook
-
App Screenshots – upload the whole lot at once!
Uploading screenshots to the App Store used to be sooo laborious. Especially with Subtitles Viewer – four screenshots x 22 language localisations…
-
App Screenshots – now make them look like ads!
This is part 2 of 3. Part 1 covered capturing the screenshots. Part 3 will be uploading them. Last time, fastlane took…
-
App Screenshots – stop doing them manually!
This week I made a significant update to Subtitles Viewer (you can check it out here). Now updating screenshots for the App Store…