uCalc
uCalc: A developer SDK for calculations and text operations, not form creation. Ranked #52 of 52 in Form Builder Software by our editors (2.0/10); pricing: Free plan; best for developers needing a calculation engine, not forms.
At a glance
- Editor score2.0 / 10
- PricingFree plan
- Best forDevelopers needing a calculation engine, not forms
- Free planYes
- Paid from$695/seat/yr
- Facts checked21 Sep 2026
Where it wins
- Parses and evaluates mathematical expressions
- Supports C#, C++, VB.NET, and cross-platform development
- Includes transformer, string, callback, and documentation tools
Where it doesn't
- Does not provide form-building workflows
- Current SDK is offered as a public preview
- Commercial licensing is oriented toward developer products
Our verdict on uCalc
uCalc is a developer SDK for parsing mathematical expressions, transforming structured text, and performing string operations. Its Fast Math Parser, Transformer, and String components support applications that need calculations, formatting, user-defined functions, and callbacks. Integrations include C#, C++, VB.NET, and .NET, while supported platforms include Windows, macOS, Linux, and iOS. It is suited to developers building calculator or data-processing functionality, rather than teams creating contact forms, surveys, registration flows, or other form-based workflows.
The free uCalc SDK Community plan includes the core math engine, Transformer library, String library, C#, C++, and VB.NET integration, and cross-platform development. The uCalc SDK Commercial plan is listed at $695 per year and adds a preview-to-stable release pipeline, one year of updates and support, and a perpetual fallback license. A $1,295 one-time commercial option includes the same release pipeline, a perpetual major-version license, and one year of updates. Other listed products include Console Calculator and Transform(er) App options with perpetual use of the licensed version and technical support periods tied to payment.
The standout fit is computational depth: uCalc combines expression evaluation, structured text transformation, string formatting, callbacks, and programming-language integration, with 600+ interactive documentation examples plus API references and tutorials. The current SDK is in public preview, so teams should consider that status when choosing it for development work. Pick uCalc when your product needs an embeddable calculation or text-transformation engine across supported platforms. Choose a dedicated form builder instead when the primary requirement is visual form design, response collection, workflow management, or form-specific publishing.
Your product? Our editors can test uCalc in depth and publish a review, labelled as paid · from $149/mo →
uCalc pricing
All 6 uCalc plans and prices →
uCalc fact sheet
| Free plan | Yes |
|---|---|
| Paid from | $695/seat/yr |
| Conditional logic | Not verified |
| Workflow approvals | Not verified |
| Payment collection | Not verified |
| File uploads | Not verified |
| Response limit | Not verified |
| Branding control | Not verified |
| Form templates | Not verified |
| Deployment | Desktop |
| Platforms | Windows, macOS, Linux, iOS |
| Support | Email, Phone, Docs |
| Built for | Solo, Small business, Enterprise (editorial estimate) |
| Integrations | 4 integrations: C#, C++, VB.NET, .NET |
| Pricing | Free plan (source) |
| Website | ucalc.com |
| Facts checked | 21 Sep 2026 |
uCalc integrations
uCalc lists 4 integrations on its own site.
- C#
- C++
- VB.NET
- .NET
Alternatives to uCalc
- JotformA feature-rich form builder for teams collecting data across web and mobile.9.4
- TypeformA polished form builder with strong logic, embeds, payments, and analytics.9.2
- FilloutA broad form builder with a free plan, flexible logic, and many integrations.9.0
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Featured on iTechGuides
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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