Make the perfect calculator
Enjoy a beautiful calculator with big buttons and numbers, that doesn't get in your way
Chose between 3 button layouts and enjoy them on any screen, from phones to tablets
Get results as you type, view your history, save to memory, plot graphs or solve fractions
Features hidden in plain sight
Long press the division key to enter a fraction
Type sin(x) and see the graph immediately
Pick the simple, classic or modern layout to fit your workflow perfectly
Whether you are cooking, working on a science project or checking dimensions, we have the converter you need
Travel the world with confidence or track exchange rates seamlessly even without an internet connection
Their business model relies on license sales. The 2-free allowance is a loss leader to get you into the ecosystem.
A retail store that only needs to record the back door during night hours and the front register during day hours. You never exceed 2 concurrent recordings.
Ultimate Guide to Synology Surveillance Station Free Licenses: Everything You Need to Know synology surveillance station license free
Before spending money on additional licenses, you can optimize your existing environment to get the most out of your two free slots. Use Multi-Lens or Panoramic Cameras
The included with almost every Synology NAS offer a fantastic, cost-effective starting point for DIY home security. By choosing your camera hardware wisely—such as opting for Synology-branded cameras or utilizing multi-lens streams—you can build a highly capable surveillance grid without spending a dime on software licensing. When you do eventually outgrow the free tier, the one-time, lifetime purchase model of Synology's extra licenses remains one of the fairest and most reliable options in the network security industry. Their business model relies on license sales
No timeline scrubbing as smooth as Surveillance Station. Requires learning YAML config files.
A: Yes. Licenses are never consumed permanently. If you remove Camera #3, license slot #3 becomes available for a new camera. You never exceed 2 concurrent recordings
If you want to map out your upcoming security layout, let me know: How many do you plan to install?
After 30 days, those cameras will disconnect, and you will see a red "License Expired" error. To avoid downtime, you must either purchase licenses or delete the extra camera entries.
If you can find the older TC500 or BC500 models, they represent a fantastic, fully-supported, zero-licensing-cost option.
Have you successfully run Surveillance Station without licenses? Share your setup in the comments below.
"Love this app! It deserves to be at the top. Slick UI, lovely design and features you never thought you need until you realise you do."
"Best calculator app. Has everything you need unless you are doing PhD in combined mathematics."
"Amazing app for a calculation nerd like me. Totally worth full purchase price to go ad free and support the developers."
"In a world of oversimplified apps, this one has every tool you can ever need. Please don't change it!"
Have a feature request or found a bug? Let us know.