StackTrack
Know what your gold and silver stack is worth. Live spot prices, real profit and loss on every coin, bar and round, and US or Canadian dollars in one tap.
Simple tools for real life
Small apps that do one job well.
Every TdotApps app is something you pay for once and keep. No account to create, no subscription to cancel, and your numbers stay on your own device.
One price
No login
Nothing uploaded
Our apps
Deedbook
Know what your rentals really earn. Equity, cash flow, mortgage paydown, appreciation and net worth for every property you own, with US and Canadian mortgage math.
Tripbrain
An ADHD travel planner. One thing at a time, a countdown where nothing turns red, the exact minute to leave the house for your flight, a door check, and what’s safe to spend today.
Classbook
A teacher’s gradebook and attendance register that writes report card comments from your own marks, attendance and notes. Any grading scale, including Ontario levels, plus seating, a planner and sub plans.
3D Print Profit Studio
A 3D print pricing calculator. Drop in a sliced .3mf or .gcode and see the true cost of filament or resin, printer time, power, your time and every Etsy fee, then your break-even, wholesale, Etsy and market prices, and quote PDFs with quantity breaks.
Tidybook
A cleaning business app for one person working alone. Quote a home in seconds from its size, bedrooms and bathrooms, book the job on a repeat, clock in and out, and see what you’re owed.
Lotbook
The books for a small used-car lot. Every bill and repair order goes on its car, so you see each car’s true cost and markup, lot stats like inventory dollars and turns, and print a window sticker or mirror hang tag from the car’s own details.
Our promise
Pay once, keep it
No subscriptions and no upsells. Updates are free.
No account needed
Open the app and start. There is nothing to sign up for.
Your data stays yours
What you type is saved on your device. We never see it and never upload it.
Questions?
A human answers. Email tdotholdings@gmail.com or message the shop on Etsy.