# QuackBuilds

> QuackBuilds is an indie software studio by a solo builder (itsEvilDuck) shipping 50+ live web apps: health trackers, family coordination tools, kids education, couples apps, co-op games, and free no-signup B2B utilities. Everything runs in the browser at https://www.quackbuilds.com — no installs.

Key facts:
- All apps live under https://www.quackbuilds.com/<app-slug>
- Free tools require no account; flagship apps have real free tiers
- None of the health apps provide medical advice or diagnosis — they track and organize user-entered data

## Flagship apps

- [Ebb & Flow](https://www.quackbuilds.com/ebb-flow): Perimenopause & menopause tracker built for irregular cycles. One-tap logging of 47 symptoms, predictions that honestly widen with cycle irregularity, pattern/trigger correlations, and a printable one-page doctor-visit report. Free tier; Plus $7.99/mo or $4.99/mo billed yearly.
- [Kinfolk](https://www.quackbuilds.com/kinfolk): Shared eldercare coordination space for families caring for an aging parent — medication schedule with one-tap dose logging, shared appointment calendar with .ics export, task board, document vault, realtime family feed. Free solo; Premium $7.99/mo or $4.99/mo billed yearly to invite family.
- [FairSplit](https://www.quackbuilds.com/fairsplit): Co-parenting documentation for separated parents — messages, custody events, expenses, and documents in one tamper-evident record (server-side timestamps + sha256 content hashes), AI tone checker, custody calendar with check-ins. Documentation tool, not legal advice. 7-day free trial, then $12.99/mo or $99/yr per parent.
- [Tandem](https://www.quackbuilds.com/tandem): Midlife hormone navigation for couples — her perimenopause and his andropause on one overlaid dashboard, plus a what-to-say communication coach. One $99/yr subscription covers both partners. Free 7-day preview.

## Free no-signup tools

- [Detention Pay Calculator](https://www.quackbuilds.com/apps/detention-pay.html): For truckers — dock in/out times to exact detention dollars owed, dispute-ready PDF claim. Free, no signup.
- [Freight Class Calculator](https://www.quackbuilds.com/apps/freight-class.html): LTL density (PCF) and NMFC freight class from dimensions + weight, updated for the 2025 NMFC density changes, density worksheet PDF. Free, no signup.
- [OEE Pulse](https://www.quackbuilds.com/apps/oee-pulse.html): Shop-floor OEE dashboard — Availability × Performance × Quality per machine, shift logging, PDF report. Free, no signup.
- [Extinguisher Log](https://www.quackbuilds.com/apps/extinguisher-log.html): NFPA 10 monthly six-point fire extinguisher inspection log with year-at-a-glance grid and compliance report PDF. Free, no signup.

## Guides

- [Guides index](https://www.quackbuilds.com/guides): 114 practical guides on perimenopause tracking, eldercare coordination, co-parenting documentation, trucking detention pay, LTL freight class, OEE, and fire-extinguisher compliance. Each guide has a printable checklist.

## Full content

- [llms-full.txt](https://www.quackbuilds.com/llms-full.txt): Complete text of all 114 guides in one file.

## Catalog

- [All apps](https://www.quackbuilds.com/apps): Full catalog of 100+ apps and tools.
- [About](https://www.quackbuilds.com/about): About the builder. Available for freelance full-stack work (Next.js, React, TypeScript, Supabase).