Quillino
Rental management for small landlords. SwiftUI, SwiftData and CloudKit. The design system pack comes from here.
AI skills
Real methods,
from real apps.
I build two iOS apps on my own. These are the methods I actually use to make them, packaged as skills for the AI you already use, with the full story of how I applied them. Mistakes included.
Two packs, €9.99 each or €14.99 together.
- SKILL.mdthe method
- README.mdstart here
- references/
- worked-example.mdthe real case
- reskin-mapping.mdbonus
"A token exists to be the single source of truth."
The packs
One AI skill, two ways to use it
Load it into your AI assistant and let it guide you, or read it and fill it in by hand. Same files either way.
-
01
€9.99
Product research and validation
Tells you when the idea isn't the best.
A wizard that stress-tests your app idea instead of agreeing with you. With the real research I did for a Refertrack feature.
-
02
€9.99
Design system and architecture
A system that doesn't drift, or break silently.
Disciplined SwiftUI tokens and a CloudKit schema that doesn't silently stall sync. With the real incident I had on Quillino.
-
+
€14.99
Both packs
Decide what to build, then build it so it holds up.
The same files as the two packs, together.
Why trust this
The examples come from apps you can download
Most templates ship with a made-up example. Mine come from these two apps. I only removed sensitive details: the numbers, thresholds and incidents are real.
Refertrack
Lab reports and blood tests: take a photo, OCR runs on device, follow your values over time. The research pack comes from here.
How it works
From download to your project
Get the pack
You get a zip of Markdown files from Gumroad. No account on this site, no subscription.
Load it into your AI
Install it as a skill in tools that support the open SKILL.md format, like Claude, Codex, Cursor or Copilot. In ChatGPT or Gemini, paste it as instructions.
Run it on your idea
Ask your assistant for help on the topic. It follows the method step by step. Read the worked example first to see where it leads.
Questions
Before you buy
What exactly do I download?
A zip with a folder in the open Agent Skills format: SKILL.md, a worked example and templates in references/, a README with step-by-step installation and a license file. All in English, plain Markdown, yours to keep.
Which AI do I need?
Any assistant that handles long instructions. Tools that support the open SKILL.md format (Claude, OpenAI Codex, Cursor, GitHub Copilot, Gemini CLI and others) load it as a real skill. In ChatGPT or Gemini you paste it into a custom GPT, a Project or a Gem. Without any AI, the files still work as step-by-step guides.
Can I ask something before buying?
Of course. Write to me at quillino.support@gmail.com and I'll answer myself.
Can I get a refund?
No. The packs are digital products you download instantly, so there are no refunds. If a file is missing, broken or doesn't match the description, write to quillino.support@gmail.com and it will be fixed.
Can I use them for commercial projects?
Yes, for your own projects, commercial ones included. You can't resell or redistribute the files. Read the license.
Bundle
Both packs, €14.99
Decide what's worth building, then build it so it doesn't break six months later. That's the order I used them in.
Also from the studio
Figma case study templates
Three Figma templates for a UX/UI case study, eleven pages each, problem to results. A different product, same standard: built to be used for real.