Practical apps for everyday tasks
Small tools.
Real possibilities.
TCool LTD makes focused utility apps that help you see, organize, measure, and get things done — on your terms.
Focused toolsfor real tasks
Across iOSand Android
Clear supportwhen you need it
01 / Inspect
Otoscope Pro
A private inspection workspace for compatible Wi‑Fi otoscopes.
View a compatible Wi-Fi otoscope, capture photos and videos, and keep observations organized. Core viewing and recording work offline — no account required.
Explore Otoscope Pro
iPhone + iPad + Android
See clearly. Keep it organized.
Present
Presentation Clicker
Turn your Android phone into a Bluetooth slide remote.
Pair your Android phone with a Windows PC or Mac over Bluetooth. Control PowerPoint, Keynote, and Google Slides with on-screen controls or your volume buttons — no desktop companion software needed.
Explore Presentation Clicker Android
Your presentation. In your hands.
Guides
Helpful guides
for everyday use.
Clear, practical answers to help you get more from your apps.
Browse guides
A temporary inbox, without the clutter
Read guide
Get started with TesDisplay
Read guide
Measure an angle from a photo
Read guide All TCool apps
View all appsOtoscope Pro
A private inspection workspace for compatible Wi‑Fi otoscopes.
iOS, Android
DropCarry
A temporary inbox for notes, links, photos, and files.
iOS
TesDisplay
Mirror your phone screen to your Tesla display.
iOS, Android
Rotation Fix
Lock or rotate your screen with one tap — automatically per app.
AndroidPresentation Clicker
Turn your Android phone into a Bluetooth slide remote.
Android
Chop Flashlight
Double-chop to toggle your flashlight, even with the screen off.
Android
Physical Keyboard Test & Fix
Find and fix the wrong keyboard layout on Android.
Android
Angle Finder & Protractor
Measure angles from your camera, photos, or a digital protractor.
iOS, Android
Scan Print Labels
Scan and print labels with a DYMO LabelWriter 450.
Android
No JavaScript
Choose where JavaScript runs in Safari.
iOS