A solo developer's decision log

Build, ship, and run apps —
from a phone.

Q: Who writes it?

The developer of Lyco App. Working full-time, developing in the gaps of parenting — entirely on a smartphone. Profile: lycoapp.com/en-US/about/.

No Mac, no PC at hand. Just an iPhone, with Claude, GitHub, and EAS on the other side of the cloud. This is the decision log — ADRs (Architecture Decision Records) — behind the apps at lycoapp.com.

Policy

No personal dataNo analytics, no cookie banners, no forms. This site is read-only.

No adsArticles carry no advertising. Support happens through Buy Me a Coffee, nothing else.

One human + AIBoth the apps and this site are built by one developer working with AI.

Only what actually ranEvery ADR documents a setup that was built and operated for real. No armchair comparisons.

Map — the decision tree

Numbers follow spec-document decimal numbering. Colors are categories. Linked rows are published articles. Japanese articles come first; English editions follow.

    0A PoC before starting anythingin progress

    1Dev Platformin progress
1Development environmentin progress
1.1Developing iPhone apps on a phone alonein progress
1.2Building without a Macin progress
2Localization (50 locales)in progress
2.1Automating store metadatain progress
2.2Automating screenshotsin progress

    2Web sitein progress
1Domainin progress
1.1A records / CNAMEin progress
1.2MX records — mail forwardingin progress
1.3TXT records — search consolesin progress
2Site structurein progress
2.1Sitemapin progress
2.2OGPin progress
2.3SEOin progress
3Web analyticsin progress

    3Marketingin progress
1Targetingin progress
2Funnel designin progress
2.1SEO funnelin progress
2.2In-app funnelin progress
2.3Social funnelin progress
2.4Store funnelin progress
2.5House adsin progress
3AISAS modelin progress
3.1Viral loopin progress

    4Monetizationin progress
1AdMobin progress
2Buy Me a Coffeein progress
3Affiliatein progress

    5Techniquesin progress
1Making AI write its own progress login progress
  

FAQ

What is this site?

A development log of the decisions behind lycoapp.com, kept as ADRs (Architecture Decision Records). It records why each choice was made — it is not a step-by-step tutorial.

Who writes it?

The developer of Lyco App — working full-time, developing in the gaps of parenting, entirely on a smartphone. Profile on the About page.

Are detailed instructions included?

No. These are ADRs, so the focus is reasoning and architecture. If you want to reproduce a setup, handing an article to an AI assistant and asking for the steps works well. Every setup documented here actually ran.

How does this relate to lycoapp.com?

Same developer, same domain. The main site is a world of habit-building apps for kids; this is the engineering behind it. The designs are intentionally separate because the audiences differ.