Calculated Fields Form vs MailChimp for WordPress
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| Feature | Calculated Fields Form v5.5.2.3 · checked 23 Oct 2026 Free + paid · ★ 4.9/5 Visit Details | MailChimp for WordPress v4.14.1 · checked 23 Oct 2026 Free + paid · ★ 4.8/5 Visit Details |
|---|---|---|
| At a glance | ||
| Active installs | 40,000+ | 1M+ |
| Last updated | October 22, 2026 | September 16, 2026 |
| Editions | Calculated Fields Form | MC4WP: Mailchimp for WordPress · Mailchimp for WordPress Premium ($) |
| Pros | Live calculated fields with formulas, dates and currency; Drag-and-drop builder with conditional fields and multi-page forms; Entries stored and viewable in the WordPress admin | Native HTML sign-up forms with full field control; Sign-up hooks for Contact Form 7, WPForms, Gravity Forms and WooCommerce; Form widget and block for placing forms; Lists refreshed daily from the Mailchimp account |
| Cons | Online payments (PayPal, Stripe, Square) need paid add-ons; Free version shows upgrade prompts in several settings screens; Large plugin with many options; a learning curve for complex formulas | Form designer, logging and user sync are Premium only; Needs a Mailchimp API key connected to the site; Procaptcha bot protection loads a third-party script when enabled |
| Mentioned in our posts | 1 | 2 |
| Features (Form plugins checklist) | ||
| Drag-and-drop builder | Yes | — |
| Conditional logic | Yes | — |
| Multi-step forms | Yes | — |
| Payments | Paid | — |
| File upload | Yes | — |
| Calculations | Yes | — |
| Entries in admin | Yes | — |
| Spam protection | Yes | — |
| Free version | Yes | — |
| More features | ||
| Other features | Calculated fields with formulas, Repeater field groups, Time slot selection for bookings, Importable form templates, AI form generator and assistant (user API key), Map widget, Opt-in feedback form to the vendor | Sign-up forms built from native HTML, Sign-up form widget, AMP-compatible sign-up forms, Campaigns archive block, Daily Mailchimp list refresh, Background subscribe through Action Scheduler or WP-Cron |
| Integrations | ||
| Payment | Stripe ($) | — |
| — | Mailchimp | |
| E-commerce | — | WooCommerce, Easy Digital Downloads |
| Plugins | — | Contact Form 7, WPForms, Gravity Forms |
| Other | Akismet, Google Gemini, OpenAI, Anthropic Claude, OpenStreetMap | Procaptcha (Prosopo) |
| Requires WordPress | 3.0.5 | 5.3 |
| Requires PHP | — | 7.4 |
| Tested up to | 7.1 | 7.1 |
| Phones home | Only if you agree | No |
| External services | cff.dwbooster.com, raw.githubusercontent.com, rest.akismet.com, api.stripe.com, api.openai.com, generativelanguage.googleapis.com, api.anthropic.com, wordpress.dwbooster.com, tile.openstreetmap.org | js.prosopo.io, api.prosopo.io, api.mailchimp.com |
| Blocks | — | 2 |
| Shortcodes | 2 | — |