SlingBlocks - Gutenberg Blocks by FunnelKit vs Spectra Legacy
Compare WordPress plugins and tools side by side. Pick products with “Compare” in the software directory.
| Feature | SlingBlocks - Gutenberg Blocks by FunnelKit v1.8.1 · checked 23 Oct 2026 Free · ★ 5.0/5 Visit Details | Spectra Legacy v2.20.5 · checked 23 Oct 2026 Free + paid · ★ 4.7/5 Visit Details |
|---|---|---|
| At a glance | ||
| Active installs | 6,000+ | 1M+ |
| Last updated | May 23, 2026 | October 9, 2026 |
| Editions | SlingBlocks · SlingBlocks One Click Upsell Blocks (Pro) ($) | Spectra Legacy · Spectra Legacy Pro ($) |
| Pros | Lightweight block set for the block editor; Accordion, columns, buttons, icon list and countdown blocks; Google Fonts can be used for block typography | Large free set of content blocks for the block editor; Popup builder and starter template library included in the free code; Styling blocks for Contact Form 7 and Gravity Forms |
| Cons | Fewer blocks than full page builders; Google Fonts are loaded from Google when a non-system font is chosen; Upsell blocks are sold separately (per readme) | Receives security and compatibility fixes only, with no new features; AI and template features depend on a credit-based ZipWP service |
| More features | ||
| Other features | Accordion, pane, columns and column blocks, Button, advanced button, icon, icon list and space divider blocks, Countdown timer block, Google Fonts for block typography, Canvas and boxed page templates for block pages | Free content block library (post grid, FAQ, gallery, timeline and more), Popup builder with a spectra-popup post type, Styler blocks for Contact Form 7 and Gravity Forms, Block template library fetched from a remote templates server, AI content generation through Zip AI (credit-based), Google reCAPTCHA keys for form blocks, Upgrade prompts for Spectra Legacy Pro ($) |
| Integrations | ||
| E-commerce | — | WooCommerce |
| Plugins | Kadence Pro | Contact Form 7, Gravity Forms |
| Other | Google Fonts | Google reCAPTCHA, ZipWP, Spectra credit server |
| Requires WordPress | 5.6 | 5.6 |
| Requires PHP | 7.4 | 7.4 |
| Tested up to | 7.0.0 | 7.1 |
| Phones home | No | Only if you agree |
| External services | — | api.zipwp.com, credits.startertemplates.com, app.zipwp.com, websitedemos.net, metrics.brainstormforce.com |
| Blocks | — | 17 |
| Shortcodes | — | 1 |