hearthlyapps

Apps that don't hold your life hostage.

A small studio making focused iPhone apps for the parts of life you're already managing alone. Free tiers that stay free. Data that stays yours. One AI feature done properly instead of ten bolted on.


How we build

Three rules, and what each one costs us.

Principles are cheap when they're free. These are the ones we've actually paid for.

Rule 01

The free tier is free forever.

Not a trial with a countdown. In Sustain, logging your dose, weight, protein and side effects costs nothing and always will. Only the AI layer is paid.

The cost: most of our users will never pay us anything, and we built the pricing knowing that.

Rule 02

Your health data is not the product.

It is never sold, never handed to advertisers, and never used to train an AI model. You can delete your account and everything in it from inside the app, permanently, without emailing anyone.

The cost: the entire revenue model that most free health apps run on is closed to us.

Rule 03

One magic moment, not AI everywhere.

We'd rather ship a single AI feature that genuinely changes the workflow than sprinkle a chatbot over every screen. In Sustain that moment is photographing a plate and getting the protein back.

The cost: a shorter feature list than every competitor, on purpose.

Products

One shipped. Three in the workshop.

Live on the App Store

Sustain

The GLP-1 companion built around the one number most trackers ignore. Dose, protein and weight tracked together, so rapid weight loss doesn't quietly cost you the muscle you worked for.

The Sustain Today screen showing next dose, protein progress and weight trend.
In development

Photo-to-estimate, for solo trades

Walk the job, snap a few photos, talk through the details, and leave with a priced, editable estimate instead of another evening at the kitchen table.

 
Exploring

A fairer mileage and expense tracker

For freelancers tired of annual price hikes on software that hasn't changed. Reliable tracking, honest pricing, nothing sneaky.

 
Exploring

Task-initiation coaching

A calmer way into the things you keep putting off. Less planner, more companion.

 
Who's behind this

Small enough that we answer our own support email.

hearthlyapps is a small independent studio, not a venture-funded team with a growth department. Every reply from support@hearthlyapps.com is written by the person who built the thing you're asking about.

That's the reason the rules above are possible. There's no board asking why the free tier is so generous, and no quarterly target that makes selling your data suddenly look reasonable.

Start with the one that's already out.

Sustain is on the App Store now, and the part most people need is the part that's free.