Spectra Pro
Brainstorm Force
$319
one-time, 3 sites
All duels
Plugin arenaPage Builders
Spectra Pro vs Stackable Premium
Two block plugins that extend the WordPress block editor
Stackable Premium
Gambit
$189
one-time, 1 site
Spectra Pro vs Stackable Premium: head to head
The measurable facts as bars. Green marks the better value in each row, red the weaker one. There is no overall winner.
One-time price
CheaperSpectra Pro$319 (Weaker value)Stackable Premium is $130 cheaperStackable Premium$189 (Better value)Sites covered
More sitesSpectra Pro3 sites (Better value)Spectra Pro covers 2 more sitesStackable Premium1 site (Weaker value)Current discount
Bigger discountSpectra Pro8% (Better value)Spectra Pro has 8 percentage points more offStackable PremiumNo discount listed (Weaker value)Saved over 5 years
Saves moreSpectra Pro$26 (Weaker value)Stackable Premium saves $30 more over 5 yearsStackable Premium$56 (Better value)Lifetime pays off after
Pays off soonerSpectra Pro56 months (Weaker value)Stackable Premium pays off 9 months soonerStackable Premium47 months (Better value)
Spectra Pro vs Stackable Premium: side by side, point by point
Every row shows both deals next to each other. Where a figure can be measured, green marks the better value and red the weaker one.
What matters to you?
Mark the points you care about. They stand out in the comparison below; we do not derive a recommendation from them.
Price
- One-time priceComparison: Difference $130
- Spectra Pro:
$319 (Weaker value)
one-time
- Stackable Premium:
$189 (Better value)
one-time
- Regular priceComparison: Only one on record
- Spectra Pro:
$349 (Better value)
Currently 8% off
- Stackable Premium:
No discount listed
License and sites
- Sites coveredComparison: Difference 2 sites
- Spectra Pro:
3 sites (Better value)
- Stackable Premium:
1 site (Weaker value)
- License terms
- Spectra Pro:
One-time payment for 3 websites with lifetime updates and support and a 14 day refund window. Lifetime toolkit plans for 10 and 1,000 websites are also available.
- Stackable Premium:
One-time payment for 1 site with lifetime updates and support and a 30 day money-back guarantee. Lifetime licenses for 10 and unlimited sites are also available.
Yearly plan
- Vendor’s yearly planComparison: Difference $20
- Spectra Pro:
$69 per year
- Stackable Premium:
$49 per year
- Cost over the years
- Spectra Pro:
What the annual plan has cost by the end of each year, against the one-time price. Total cost of the annual plan compared with the lifetime price Period Annual plan, total Lifetime Difference Year 1 $69 $319 Lifetime costs $250 more Year 2 $138 $319 Lifetime costs $181 more Year 3 $207 $319 Lifetime costs $112 more Year 4 $276 $319 Lifetime costs $43 more Year 5 $345 $319 You save $26 - Stackable Premium:
What the annual plan has cost by the end of each year, against the one-time price. Total cost of the annual plan compared with the lifetime price Period Annual plan, total Lifetime Difference Year 1 $49 $189 Lifetime costs $140 more Year 2 $98 $189 Lifetime costs $91 more Year 3 $147 $189 Lifetime costs $42 more Year 4 $196 $189 You save $7 Year 5 $245 $189 You save $56 - One-time payment pays off afterComparison: Difference 9 months
- Spectra Pro:
56 months (Weaker value)
against $69 per year
- Stackable Premium:
47 months (Better value)
against $49 per year
Offer
- Offer endsComparison: Same
- Spectra Pro:
No end date announced
- Stackable Premium:
No end date announced
- Sold viaComparison: Same
- Spectra Pro:
Official website
- Stackable Premium:
Official website
- Price checkedComparison: Same
- Spectra Pro:
- Stackable Premium:
Ecosystem
- CategoryComparison: Same
- Spectra Pro: Page Builders
- Stackable Premium: Page Builders
- Built forComparison: Same
- Spectra Pro:
- Gutenberg & Blocks
- Stackable Premium:
- Gutenberg & Blocks
Features
- Listed features
- Spectra Pro:
- Loop builder for posts, products and custom queries
- Popup builder with exit-intent, delay and scroll triggers
- Dynamic content from ACF, Pods and Meta Box
- Stackable Premium:
- 375 design library patterns
- 40 full-page templates
- Expanded global design system and reusable block styles
Strengths and weaknesses
- Strengths
- Spectra Pro:
- Lifetime updates and support with no renewal
- Works directly in the block editor, with no separate builder interface
- Free Spectra blocks on wordpress.org with more than one million active installs
- Stackable Premium:
- Lifetime updates and support included
- Free version on wordpress.org to test the blocks first
- 30-day money-back guarantee
- Weaknesses
- Spectra Pro:
- The entry lifetime plan covers only 3 websites
- Astra Pro, premium templates and the AI platform are only included in the larger toolkit plans
- The current price is a discount on the regular list price and may go back up
- Stackable Premium:
- The entry lifetime license covers only 1 site
- The lifetime price equals almost four years of the annual plan
- Only useful if you build your pages in the block editor
Links marked “Ad” are affiliate links. Your price stays the same. Affiliate disclosure
Spectra Pro vs Stackable Premium: what this comparison is about
Spectra Pro and Stackable Premium add blocks, dynamic content and design tools to the WordPress block editor, so you keep working in Gutenberg instead of a separate builder interface. Spectra Pro extends the Spectra plugin, Stackable Premium extends the free Stackable version on wordpress.org. Both sell lifetime licenses with lifetime updates and support.
The licenses differ in scope: the Spectra Pro lifetime plan covers three websites and is currently discounted from its regular price, Stackable Premium covers one site. Both pull dynamic content from ACF and Meta Box. The rows below compare prices, yearly plans and the listed features.
Spectra Pro vs Stackable Premium: the main differences
Both are Gutenberg block plugins sold as a lifetime deal, and both keep you inside the WordPress block editor instead of a separate builder interface. The difference lies in the focus. Spectra Pro is a Pro add-on for the Spectra block library and adds building tools: a loop builder for posts, products and custom queries, a popup builder, and Slider Pro and Modal Pro blocks.
Stackable Premium upgrades the Stackable block library with a design focus: 375 design library patterns, 40 full-page templates, an expanded global design system with reusable block styles, motion effects and custom CSS per block. Both add dynamic content from custom field plugins, so archives and listings can draw on your own fields without code, and both offer global styles in some form.
Who Spectra Pro suits and who Stackable Premium suits
Spectra Pro suits block editor users with up to three sites who already work with the free Spectra blocks and need dynamic layouts. The loop builder, popups with exit-intent, delay and scroll triggers, and login and registration forms point to sites with post or product listings, campaigns and user accounts. Spectra reports more than one million users, so the community around it is large.
Stackable Premium suits block editor users with one site, and designers who want ready-made patterns and full-page templates to start from. Conditional display by user role, date or post data, together with motion effects and custom CSS per block, points to sites where design and dynamic content go hand in hand. The free version lets you try the blocks before you upgrade.
From the free blocks to Spectra Pro or Stackable Premium
Neither plugin starts from scratch. Stackable Premium unlocks premium features on top of the free Stackable version on wordpress.org, and Spectra Pro extends the free Spectra blocks. The paid version adds its tools to the editor you already use. That makes it easy to test the workflow with the free blocks first and buy the lifetime license only once you need the extra features.
After the upgrade, both licenses include lifetime updates and support with no renewal. The scope of the entry license differs: Spectra Pro covers three websites, Stackable Premium one site. Larger lifetime tiers exist on both sides, toolkit plans for 10 and 1,000 websites at Spectra and licenses for 10 and unlimited sites at Stackable, so more sites mean a larger tier.
Spectra Pro or Stackable Premium: questions to weigh for yourself
Each answer names the facts for both sides. Which of them matters for your project is up to you.
How many sites will you build with it?
The Spectra Pro lifetime plan covers 3 websites, with toolkit plans for 10 and 1,000 websites at higher prices. Stackable Premium covers 1 site, with licenses for 10 and unlimited sites at higher prices.
Which design tools matter to you?
Stackable Premium lists 375 design library patterns, 40 full-page templates, motion effects and custom CSS per block. Spectra Pro lists a loop builder, a popup builder with exit-intent, delay and scroll triggers, and scroll-based entrance animations.
Which data sources do you use?
Spectra Pro pulls dynamic content from ACF, Pods and Meta Box. Stackable Premium pulls it from ACF, Meta Box and JetEngine.
What should you know about the offer?
The current Spectra Pro price is a discount on its regular price and may go back up; Astra Pro, premium templates and the AI platform are only part of the larger toolkit plans. Stackable offers a 30-day money-back guarantee.
Spectra Pro vs Stackable Premium: frequently asked questions
Short answers from the vendor data. Prices and dates match the comparison above.
Spectra Pro costs $319 one-time for 3 sites, Stackable Premium costs $189 one-time for 1 site. Both are one-time payments from the vendors’ own pricing pages, checked on Oct 4, 2026.
Yes. The vendors also sell yearly plans: $69 per year for Spectra Pro and $49 per year for Stackable Premium. Measured against them, the lifetime price of Spectra Pro pays off after 56 months, that of Stackable Premium after 47 months.
Yes. Both work directly in the WordPress block editor, so you build pages in Gutenberg instead of a separate builder interface. Spectra Pro extends the Spectra block library, Stackable Premium the free Stackable plugin. You keep the editor WordPress ships with and add blocks, dynamic content and design tools to it.
Yes, both list them. Spectra Pro offers global styles with reusable variables and a font scale. Stackable Premium unlocks an expanded global design system with reusable block styles. Either way you define styles once and reuse them across the site instead of setting them block by block.
Yes. Stackable Premium includes conditional display by user role, date or post data, so a block can appear only for a given role or during a set period. Spectra Pro lists no conditional display in our data, but it brings login and registration forms and a popup builder with exit-intent, delay and scroll triggers.
Yes. Both lifetime licenses include updates and support for life, with no renewal needed to keep receiving new versions. Spectra Pro names this for its lifetime plan for three websites, Stackable Premium for its lifetime license for one site. Larger lifetime tiers for more sites cost more on both sides.
This page names no overall winner between Spectra Pro and Stackable Premium. In the comparison, green and red mark the better and the weaker value for each measurable point, such as price, sites and payback. The questions to weigh show which facts matter for which kind of project, so you can decide what fits yours.
How we put deals side by side
Affiliate disclosureVendor data
Prices and licenses from the vendor’s page, with check date.
No ranking
We don’t test the plugins ourselves and we don’t rank them.
Sides mean nothing
Whether a deal stands left or right says nothing about it.
Marked links
Affiliate links are marked and never change a single row.
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