Everyday apps,
effortlessly simple
Practical mini-apps for daily tasks - clean design, fast results, no sign-up.
Popular Apps
Built for your daily workflow
Handcrafted utilities that save you time and help you get things done.
Image Text Overlay
Add customizable text overlays to images with real-time preview.
Color Converter
Convert between HEX, RGB, HSL and generate beautiful palettes.
Pomodoro Timer
Stay focused with customizable work and break intervals.
Percentage Calculator
Calculate percentages, percent change, and ratio-to-percent in one place.
Image Resizer
Resize images to exact dimensions in your browser and download instantly.
QR Code Generator
Generate QR codes for links, docs, menus, and flyers instantly.
UTMatic
Build UTM-tagged URLs for Google Analytics campaign tracking.
Why STSApps
Small tools that do one job well
STSApps is a growing set of small, focused tools for everyday tasks: quick math, image tweaks, and campaign links. Each one does a single job well, opens instantly, and works on your phone or your desktop.
There is nothing to install and no account to create. The tools run in your browser, so the numbers, images, and text you work with stay on your device.
Explore
Browse by category
Find the right tool by the kind of task you are doing.
FAQ
Common questions
Frequently asked questions
- Do the tools cost anything?
- No. Every tool on STSApps is free to use.
- Do I need an account?
- No sign-up is required to use any tool.
- Do the tools work on mobile?
- Yes. Every tool is built to work on phones and desktops.
- Does my data leave my device?
- The tools run in your browser, so the content you work with is not uploaded.
- Are new tools added over time?
- Yes. The collection grows as new tools are built and released.