01 / 12
Ponolens
A clearer way to see what matters.
An open-source lens on the places, ideas, and details worth noticing—built to turn a focused point of view into a useful digital experience.
- Open source
- Web app
- Product design
Independent software studio · Hawaiʻi
Small tools.
Sharp ideas.
Holmgren Studio makes useful apps, playful games, and open-source software for people who care about the details.
↓Selected work
12 projects · 2018—26
02 / 12
AC Engineer & Spotter
The calm voice in the heat of the race.
A lightweight race engineer and proximity spotter for Assetto Corsa. It delivers useful voice calls for traffic, strategy, fuel, weather, flags, tyres, and pace—without a separate process.
- Lua
- Assetto Corsa
- Audio
03 / 12
AutoRaceJournalCoach
Every race has a story. Every lap has a lesson.
A standalone Assetto Corsa app that automatically records races, builds rich HTML journals, scores driving, analyzes telemetry, and turns the result into practical post-race coaching.
- Lua
- Telemetry
- Driver coaching
04 / 12
Checklist Genie
Turn a thought into a list—in seconds.
A smart checklist app for iPhone, iPad, and Apple Watch. Create and share actionable lists from your voice or a photo, schedule recurring routines, and keep momentum with progress tracking and streaks.
- #1 Product Hunt
- SwiftUI
- AI
- Apple Watch
05 / 12
Total Recall
Easy to learn. Hard to remember.
A pattern-memory game that starts simple and steadily raises the challenge. Repeat the star sequence behind the tiles, sharpen recall, and compete through Game Center leaderboards and achievements.
- iOS
- Memory game
- Game Center
06 / 12
Sharper Minds
Fifteen ways to keep your mind moving.
An offline collection of classic brain games for iPhone and iPad—from Sudoku, crosswords, and 2048 to word search, trivia, patterns, and the chimpanzee memory test.
- iOS
- 15 games
- Works offline
07 / 12
Powder Hound
One touch. Endless mountain.
A fast, one-touch skiing game set on Candy Mountain. Carve through a newly generated black-diamond run every time, dodge tumbling snowballs, and collect candy and stars for energy and speed boosts.
- iOS game
- Endless runner
- Game Center
08 / 12
Aloha Planner
Your life, organized without the clutter.
An all-in-one life organizer for notes, tasks, grocery lists, habits, meal plans, recipes, and photo journaling—designed to feel as straightforward as writing on a sticky note.
- iOS & Android
- Productivity
- Life planning
09 / 12
Canasta Score
Score the round. Keep the game moving.
A free Canasta scorekeeper with team tracking, round totals, bonuses, rules, shared game rooms, and a photo scanner that helps count laid-down cards faster.
- Web app
- Live sync
- Card scanner
10 / 12
StudentXfer
Find the college that fits your next chapter.
A transfer-friendly college search experience designed to help students explore their next move with a clearer, more focused interface.
- Web app
- College search
- Education
11 / 12
808 Speed Camera Alert
Stay aware. Keep your eyes on the road.
Real-time audio alerts for traffic and speed cameras across Hawaiʻi. It works in the background alongside music and navigation apps, includes a built-in camera map, and requires no account.
- iOS
- Navigation
- Privacy-first
12 / 12
808 Rally
Local tennis. Flexible matches. Island competition.
A free, year-round Oʻahu tennis flex league for local players. Members schedule their own matches, report scores, follow standings, and compete through round-robin play for a spot in the playoffs.
- Web app
- Tennis league
- Oʻahu
About the studio
Built from curiosity.
Holmgren Studio is the independent project practice of Tim Holmgren. It is a home for thoughtful apps, playful games, and practical software—made to solve real problems and refined through use.