Phone mockup

Build apps, not spreadsheets

Build formula-driven web apps that run offline. Leverage your spreadsheet skills with our no-code app designer.

Ease of use

Apps present clear forms which are much easier to use than a spreadsheet grid


Make buttons perform complex business logic with our powerful action formulas


Users can be required to sign in, thereby protecting sensitive information

Calcapp is simple enough for anyone to use and they provide amazing support—no other product compares. We quickly managed to bring our ROI marketing campaign to life with Calcapp. Using an outside developer would have cost $6,000.
Marynn Garabedian
Web Developer, Spireon Inc.

Powerful formulas

Connect Excel-like formulas—with support for more than 400 functions—to the fields of your app. Formulas can also be used to determine if a field should be visible and what recipients an email should be sent. Powerful action formulas let you decide what happens when a button is pressed.

PDF reports, Excel, Slack and more

Collect information from your users with text and number fields, check boxes and sliders. At the press of a button, email PDF or CSV reports. Through Zapier and similar services, buttons can add collected data to spreadsheets and databases, post to Slack channels and more.

All the services you can use with Calcapp
We used traditional spreadsheets for many years to help our customers plan and operate water treatment systems using our products. Today, Calcapp has helped us move these calculations into an accessible mobile tool.
Eric Bradley
Product Line Manager, Dober

Rich text

Use lists, links, headings, different fonts and high-resolution images to liven up your documentation

Works offline

Our Progressive Web Apps (PWAs) work offline and can be installed easily

Safety first

Use validation to flag potentially invalid input or results, ensuring that errors are caught early

App plus web

A calculator can be embedded in a website, but also run as an app on iOS and Android. Once installed, your app is accessible from your users' home screens. Apps run offline.

Your app installed on an iPhone

Our no-code app builder

Design your app graphically using our easy-to-use DIY tool. Use the live preview to test your app and then publish it at the press of a button.

Our easy-to-use app builder
(Turn your device sideways to get a better view.)

Try Calcapp now

Create and preview apps without having to create an account and sign up when you're ready to share your app.