OpnForm vs uCalc
OpnForm
opnform.comuCalc
ucalc.comSide by side
| Figure | OpnForm | uCalc |
|---|---|---|
| Price from | $25/mo | $57.92/mo |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | Yes | — |
| Web | Yes | Yes |
| Windows | — | Yes |
| macOS | — | Yes |
| Linux | — | Yes |
| iOS | — | Yes |
| API | Yes | — |
| Self-hosted | Yes | — |
| Plans published | 9 | 10 |
| Spec score · Form builders | 9.1 (#5) | 8.0 (#41) |
| Spec score · Form Builder Software | 8.6 (#12) | 8.0 (#41) |
| Headquarters | The privacy policy places the company in Neuilly-sur-Seine, France. | Charlotte, North Carolina, United States |
| Support | The Free plan includes community support; Business includes priority support; Enterprise lists SLA and onboarding support. | uCalc accepts technical assistance, pricing, and general product inquiries through its contact form, and commercial SDK licenses include 12 months of priority technical support. |
Plans
OpnForm
- FreeFree
- Pro$25 a month
- Business$67 a month
- Enterprise$220 a month
- Self-hosted Community EditionFree
- Self-hosted Enterprise License$1,999 a year
- Community Edition (self-hosted)Free
- Enterprise License (self-hosted)$1,999 a year
- Self-hosted Enterprise license$1,999 a year
uCalc
- uCalc SDK CommunityFree
- uCalc Console Calculator$499 a month
- uCalc SDK Commercial (yearly)$695 a year
- uCalc Transform(er) App$999 a month
- uCalc SDK Commercial (one-time)$1,295, paid once
- uCalc Console Calculator$4,999 a year
- uCalc Console Calculator$9,999, paid once
- uCalc Transform(er) App$9,999 a year
- uCalc SponsorPrice not published
- uCalc SupporterPrice not published
In their own words
uCalc
uCalc is a C++, C# and VB SDK for evaluating expressions and transforming structured text. Its Fast Math Parser evaluates expressions defined at runtime, including those using custom variables, functions and operators. It supports parsing an expression once and evaluating it repeatedly. The Transformer tokenizes text before matching, for tasks such as code refactoring, linting and data transpilation. The String SDK adds mutable, token-aware search and replace, live substring views and chainable text operations.
The SDK is listed for Windows, macOS and Linux and is offered through NuGet; a Visual Studio extension brings token-aware search and transformation into the IDE. The free Community SDK plan costs nothing for eligible users with less than $100,000 in annual gross revenue. Commercial SDK plans cost $695 a year or $1,295, paid once. Preview safeguards for untrusted input are incomplete, and two legacy apps have not been updated in over 10 years.