Explore the App
Every picture and game below is the real thing. Try two of the activities right here, then see everything the full app holds.
Try a real activity
These are the actual game screens, not videos.
Turn clockwise to drive it in, counterclockwise to back it out.
Free preview: nothing here is scored, saved or unlocked. Your progress in the full app starts fresh when you play for real.
All the games
Six academies come with the $3.99 unlock. Three expansion packs are optional extras.
Read a real ruler
Measuring Academy
Whole inches, centimeters, halves, quarters, then measure like a builder. Drag the ruler marker to the exact mark.
Included in the full appTurn real hardware
Nuts, Bolts & Screws
Forty hands-on activities: drive screws into wood, wind nuts down bolts, sort, match, and build five projects.
Included in the full app
Gears, pulleys & levers
How Machines Work
Build gear trains, lift loads with pulleys, balance levers, roll wheels down ramps — then invent your own machine.
Included in the full appWhat's included
Spot the hidden tool
Tool Detective
Find the hidden tool in the workshop, identify tools by their sound, and solve five detective cases.
Included in the full appWhat's included
Repair real projects
Tommy's Fix-It Missions
Work through real repair jobs with Tommy — pick the right tool, measure the axle, then test your fix.
Included in the full appWhat's included
Know every tool
Learn Tools & Quiz
What each tool does, how to hold it safely, and a quiz that checks what you remember.
Included in the full appWhat's included
Cars from the inside out
Junior Mechanic Garage
Meet the vehicle, work the tire shop, look under the hood, then diagnose a real fault and fix it.
Premium pack · separate purchase · $1.99Pack detailsBig machines at work
Construction Crew Adventure
Meet the excavator, dig and build, lay a road, run the crane, then build a whole neighborhood.
Premium pack · separate purchase · $2.99Pack detailsBuild it and power it
Junior Inventor STEM Lab
Electricity, magnets and motors — then fit the parts to a flashlight, a fan, a toy car and a working robot.
Premium pack · separate purchase · $2.99Pack details
Extra tools & builds
Master Builder Bundle
Twelve power and garden tools, four advanced build projects, four repair scenarios and an expert quiz mode.
Optional add-on · separate purchase · $1.99Pack detailsOne-time unlock · $3.99
Pay once, use forever, no subscription. This is everything included:
- Measuring Academy
- Nuts, Bolts & Screws
- How Machines Work
- Tool Detective
- Tommy's Fix-It Missions
- Learn Tools & Quiz
A grown-up confirms the purchase before any payment page opens.
Optional packs · not included
These are separate purchases inside the app. The $3.99 unlock does not include them, and the app is fully playable without them.
- $1.99
Junior Mechanic Garage
Cars from the inside out
- $2.99
Construction Crew Adventure
Big machines at work
- $2.99
Junior Inventor STEM Lab
Build it and power it
- $1.99
Master Builder Bundle
Extra tools & builds
Pictures on this page are the real game artwork. Free previews never save progress, award stars or unlock anything.