Interfaces with personality
Sketches turn into playful layouts, motion, and sound that make utility tools feel welcoming and fun to use every day.
- Custom iconography
- Theme-able design systems
- Accessibility-first gestures
Indie App Lab · HCMC
Playful digital tools crafted by a solo maker.
OtterSpark is my indie label for experiments that make everyday workflows feel lighter. Each app is designed, built, and supported by one person obsessed with delightful details.
- Apps shipped
- 6
- Platforms supported
- iOS · Android · Web
- Built & maintained by
- One maker
Thoughtful software, handcrafted end-to-end
I noodle on ideas, sketch interfaces, write the code, and polish every micro-interaction myself. Shipping solo means every release reflects one clear vision.
Code that respects your time
I obsess over fast launches, offline resilience, and privacy-friendly analytics so tools behave reliably on the go.
- Type-safe foundations
- Performance profiling
- Privacy-first telemetry
Community-powered roadmap
Feedback loops run directly through inbox notes and beta builds, shaping what ships next without layers of hierarchy.
- User-led experiments
- Friendly support replies
- Open build logs
Sustainable indie cadence
I iterate in focused batches, validate ideas with real users, and keep releases lean enough for one person to support long term.
Weekly changelog notes
Kitchen-table usability tests
Slow, steady updates
Live apps under the OtterSpark label
These are the tools I rely on daily and continue to iterate in public. Download them, send feedback, and help shape what ships next.
UniQR
QR all-in-one utility tool
Scan, generate, and stash QR codes in one friendly app. Quick actions, history search, and custom theming keep your codes tidy and ready.
- Smart history & tagging
- Offline-ready scanner
- Customizable layouts
Tracklio
Multi-timer time tracker
Run stopwatches, countdowns, and Pomodoro sessions in parallel. Group timers by project, track billable hours, and see exactly where the day went without juggling apps.
- Parallel stopwatch + countdown + Pomodoro
- Project & billable time grouping
- iOS Shortcuts automation
Gotcha Matcha
Cute foodie sticker journal
Turn meal photos into cute stickers, drop them on a calendar canvas, and build a visual diary of every matcha, coffee, and dessert worth remembering.
- Photo-to-sticker in one tap
- Calendar timeline & food map
- Stats for drinks, desserts & meals
Stampify
Aesthetic photo stamp journal
Snap a photo, get a postage-stamp keepsake. Organize stamps into trip, daily-life, or people collections and revisit memories on a calm timeline.
- Instant photo-to-stamp design
- Themeable collections & shapes
- Timeline view + pinch-to-zoom camera
QikSnap
Shareable screenshot polish
Drop raw screenshots into beautiful backgrounds, fine-tune padding and shadows, and add watermarks so every share looks polished and credited.
- One-tap backgrounds & padding
- Adjustable depth shadows
- Watermark + light & dark themes
ImgFlow
Visual image processing pipelines
Build visual image processing pipelines with drag-and-drop nodes. Crop, resize, compress, and convert images effortlessly with an intuitive workflow builder.
- Drag-and-drop pipeline builder
- Batch image processing
- Multiple format support
How each release comes together
Solo building means short feedback loops. I collect signals, design in Figma, code in TypeScript, and ship updates with plenty of play-testing.
01 · Explore
Chasing curiosities, noting friction in daily routines, and sketching rapid prototypes.
02 · Build
Designing UI kits, writing code, and dogfooding features across devices.
03 · Polish
Squashing edge cases, adding ease-of-use touches, and sharing updates with the community.
Curious about the journey?
Here are a few behind-the-scenes answers for fellow makers and supporters following along.
Who keeps OtterSpark running?
Just me! I design the interfaces, write the code, ship the releases, and answer every support email under the OtterSpark name.
How are new features prioritized?
I keep a living roadmap fueled by my own usage and community suggestions. If you have an idea, email me and it just might sneak into the next build.
Can I get involved?
Absolutely. Join beta tests, share bug reports, or spread the word—every bit of support helps this indie lab keep experimenting.
Follow updates across all apps or drop me a note
Running multiple apps under OtterSpark—UniQR, Tracklio, Gotcha Matcha, Stampify, QikSnap, ImgFlow. Share feedback, request support, or suggest features for any app; I read every message.