From Components to System: Rebuilding the UI Foundation HEAVY DEV Co. • Indie Dev Log #28 • Mar 28 - Apr 7, 2026

New card system, cleaner UI, and laying the groundwork for image uploads.

Log 28 is live 💪

#indiedev #mobileappdevelopment #flutterdevelopment #UXDesign #UIdesign #buildinpublic

open.substack.com/pub/hevydevc...

What I want to accomplish in 2026 HEAVY DEV Co. · 2026 Roadmap · April 1, 2026

Not another “goals” post.

This is my 2026 roadmap. What I’m building, what I’m launching, and what comes next.

Flex Gym Inventory → Launch

Then everything builds from there.

#indiedev #UXDesign #UIdesign #buildinpublic

open.substack.com/pub/hevydevc...

Redesigned my card system to be cleaner and more consistent across the app. Small changes but they make everything feel more cohesive.

#buildinpublic #UXdesign #UIdesign #indiedev

I used to track all my gym equipment in a spreadsheet.
It worked at first… but got messy fast.
So I started building my own app, Flex Gym Inventory.

Back to Building: Dashboard UX Improvements and Push Notification Infrastructure HEAVY DEV Co. - Indie Dev Log #26 • March 8-14, 2026

New dashboard UX improvements, push notification foundation, and wiring forms to the Isar data layer.

Log 26 is live.

#indiedev #mobileappdevelopment #flutterdevelopment #UXDesign #UIdesign #buildinpublic

open.substack.com/pub/hevydevc...

Weekly Indie Dev Log #25 Highlights

New interactive arc chart, cleaner dashboard visuals, and a few gym upgrades in real life.

Log 25 is live

#indiedev #mobileappdevelopment #flutterdevelopment #UXDesign #UIdesign #buildinpublic

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Weekly Indie Dev Log #24 Highlights

Auth flows tightened, validation cleaned up, and UI messaging refined.

January’s dev log is live!

#indiedev #mobileappdevelopment #flutterdevelopment #UXDesign #UIdesign #buildinpublic

open.substack.com/pub/hevydevc...

Weekly Indie Dev Log #23 Focused on tightening authentication flows and improving reliability. Added client-side input validation, expanded unit and widget test coverage, and fully wired magic link functionality into signup a...

Auth validation tightened, magic links fully wired, and test coverage expanded

Log 23 is live

#indiedev #mobileappdevelopment #flutterdevelopment #UXDesign #UIdesign #buildinpublic

open.substack.com/pub/hevydevc...

Weekly Indie Dev Log #22 These two weeks focused on foundational flow, authentication logic, and deep link/magic link hand. I completed key repository and utility files for onboarding and log in, built the startup_router…

Routing logic, magic link handling, and core auth flow updates.

Log 22 is live

#indiedev #mobileappdevelopment #flutterdevelopment #UXDesign #UIdesign #buildinpublic

open.substack.com/pub/hevydevc...

Weekly Indie Dev Log #21 Wrapped up repository test files, refined key models, added new utilities for logging and date formatting, and moved forward with website and brand design for HEAVY DEV Co. The biggest milestone of al...

New test files, refined models, and big progress on HEAVY DEV Co.

Log 21 is live

#indiedev #mobileappdevelopment #flutterdevelopment #UXDesign #UIdesign #buildinpublic

open.substack.com/pub/hevydevc...

Weekly Indie Dev Log #20 Focused on refining both structure and strategy this week. Made final UI tweaks to the ConfirmDialog widget, documented custom widget use cases, and began outlining a detailed four phase testing plan ...

UI tweaks, better docs, and a full testing roadmap

Log 20 is live!

#indiedev #mobileappdevelopment #flutterdevelopment #UXDesign #UIdesign #buildinpublic

open.substack.com/pub/hevydevc...

Weekly Indie Dev Log #19 Balanced a bit of everything this week. I expanded repository functionality, added more flexible UI components, and made solid progress on my MVP prototype for the Flex Gym Inventory case study.

New alert dialogs, refined repositories, and more progress on my FGI prototype.

Log 19 is live 💪

#indiedev #mobileappdevelopment #flutterdevelopment #UXDesign #UIdesign #buildinpublic

open.substack.com/pub/hevydevc...

Heavy Dev Co. | Substack Indie product designer & developer sharing the process of building apps. Currenlty focused on tools for gym owners and lifters, including Flex Gym Inventory, a smarter way to track gym equipment for h...

Building apps. Sharing the process.
Every week I post behind-the-scenes dev logs, design notes, and indie life updates over on Substack.

Follow along: hevydevco.substack.com

Built for impact. #IndieDev #BuildInPublic

Weekly Indie Dev Log #18 Highlights... Focused on polishing the app's structure and planning future updates. Designed the default gym picker and filtering/search sheets in Figma. Refined Isar DB models, and began coding early...

New Figma screens, fresh logic, and smoother flow.

Log 18 is live 💪

#indiedev #mobileappdevelopment #flutterdevelopment #UXDesign #UIdesign #buildinpublic

open.substack.com/pub/hevydevc...

Weekly Indie Dev Log #17 Got my new Mac Studio set up and returned to full development mode! Wrapped up migration, tackled dependency hiccups, and began updating models and services to support sorting, filtering, and default ...

New Mac Studio, fresh setup, and back to building.

Log 17 is live!

#indiedev #mobileappdevelopment #flutterdevelopment #UXDesign #UIdesign #buildinpublic

open.substack.com/pub/hevydevc...

Weekly Indie Dev Log #16 A quiet but focused return. I added an About Flex Rackley screen, improved SafeArea handling across the app, after taking time to reset after a tough couple of weeks.

Took a couple of quiet weeks off after a tough time. Easing back into dev, built the new About Flex Rackley screen, updated SafeAreas, and getting back in the groove

#indiedev #mobileappdevelopment #flutterdevelopment #UXDesign #UIdesign #buildinpublic

open.substack.com/pub/hevydevc...

Weekly Indie Dev Log #15 This week I built all three new onboarding screens, designed a simple export page with PDF and planned CSV options, and started logging and minor UI bugs while ensuring every screen uses SafeArea. The...

This week I built 3 new onboarding screens, designed a simple export page, and started logging minor UI bugs while polishing the app’s flow + reliability.

#indiedev #mobileappdevelopment #flutterdevelopment #UX #UI #buildinpublic

open.substack.com/pub/hevydevc...

Big milestone week…finished the settings UI build, set up Isar DB for local storage, and polished onboarding with new screens
#indiedev #mobileappdevelopment #flutterdevelopment #UXDesign #UIdesign #buildinpublic

open.substack.com/pub/hevydevc...

Weekly Indie Dev Log #13 After taking last week off to rest and reset, this week I got back into building. I wrapped up the Account screen, added new functionality like account deletion and upgrade prompts, and made several s...

Took last week off to reset, but I’m back in the groove! Wrapped up the Account screen, added account deletion & upgrade prompts, plus some meaningful widget improvements. Feeling momentum again!

#indiedev #flutterdevelopment #buildinpublic

open.substack.com/pub/hevydevc...

Sharing the messy middle, not just the polished end.
My build journal tracks every step...redesigns, breaking code, and starting over again.
It’s a reminder: progress is progress, even when it’s not pretty.
#builtinpublic #indiedev #mobileappdevelopment #flutterdevelopment

Tired of tracking your gym setup in a spreadsheet?
I’m building Flex Gym Inventory — a clean, simple app to manage your home or small gym equipment.
Built by a lifter, for lifters.
Support on Substack: substack.com/@heavydevco

#buildinpublic #mobileappdevelopment #flutterdev #UXdesign #UIdesign

Weekly Indie Dev Log #12 Highlights

The week's log:

Wrapped up detail screens, condensed settings, and refined the account flow, while working a hectic work schedule with late nights and early starts.

#indiedev #mobileappdevelopment #flutterdevelopment #UXDesign #UIdesign #buildinpublic

open.substack.com/pub/hevydevc...

Weekly Indie Dev Log #11 | Flex Gym Inventory Get more from Flex Gym Inventory on Patreon

New Indie Dev Log is out! Check out what I did last week on Flex Gym Inventory!

#indiedev #mobileappdevelopment #flutterdevelopment #UXDesign #UIdesign #buildinpublic

www.patreon.com/posts/weekly...

Weekly Indie Dev Log #10 | Flex Gym Inventory Get more from Flex Gym Inventory on Patreon

New Indie Dev Log is out! Check out what I did last week on Flex Gym Inventory!

#indiedev #mobileappdevelopment #flutterdevelopment #UXDesign #UIdesign #buildinpublic

www.patreon.com/posts/weekly...

Weekly Indie Dev Log #9 | Flex Gym Inventory Get more from Flex Gym Inventory on Patreon

New Indie Dev Log is out! Check out what I did last week on Flex Gym Inventory!

#indiedev #mobileappdevelopment #flutterdevelopment #UXDesign #UIdesign #buildinpublic

www.patreon.com/posts/weekly...

Weekly Indie Dev Log #8 | Flex Gym Inventory Get more from Flex Gym Inventory on Patreon

Indie Dev Log 8 is up!

Code heavy week…Supabase integration for login, signup, and onboarding. Designing empty states.

#indiedev #mobileappdevelopment #flutterdevelopment #uxdesign #uidesign

www.patreon.com/posts/135148...

Weekly Indie Dev Log #7 | Flex Gym Inventory Get more from Flex Gym Inventory on Patreon

Published my inaugural Weekly Indie Dev Log on Patreon today! Each log will be a summary of things I did over the week pertaining to my app Flex Gym Inventory.

#indiedev #mobileappdevelopment #flutterdevelopment #uxdesign #uidesign

www.patreon.com/posts/134586...

Sketched out a snackbar micro interaction in Figma. Just enough motion to feel responsive, not distracting.

Excited to translate this into Flutter soon.

Patreon.com/flxinvapp

#UXDesign #MicroInteraction #IndieDev #BuildInPublic #FigmaDesign #Snackbar