Blockify vs SOptim — what each app actually blocks

The 30-second version

Blockify and SOptim both call themselves bot-blocking apps. They aren't doing the same job.

• Blockify blocks visitors based on where they come from: country, IP address, proxy, VPN, TOR. It runs on your storefront pages — the homepage, the product page, the cart page.
• SOptim blocks visitors based on where they come from too, plus how they behave: mouse-movement variance, keystroke cadence, paste detection, scroll velocity, a 0-100 behavior score. And critically, SOptim blocks inside the Shopify checkout via a Validation Function — the part of the funnel Shopify protects from third-party apps.

If your problem is "shoppers from countries I don't ship to keep visiting," Blockify covers that, and it's been doing it since 2018. If your problem is "card-testers and scrapers are getting through to checkout despite my country block," that's a different problem and it needs a different tool.

The feature table

What each app ships today, based on public App Store listings and our own product. Anything we can't verify from a primary source, we leave blank rather than guess.

Feature	Blockify	SOptim
Country / region blocking	Yes	Yes
IP address allow/block list	Yes	Yes
VPN / proxy detection	Yes (paid)	Yes (Grow+)
TOR detection	Yes (Enterprise)	Yes (Grow+)
iCloud Private Relay allow-list	—	Yes
Country redirect	Yes	—
Custom block page (branded)	Yes	Yes
Content protection (right-click / DevTools)	Yes	—
Age verification gate	Yes	—
Server-side checkout block (Validation Function)	—	Yes
Behavior scoring (mouse, keys, paste, scroll)	—	Yes
Heavy fingerprint hash (canvas + audio + WebGL)	—	Yes
Cross-shop reputation (Defense Network)	—	Yes
Order-level fraud rules (BIN mismatch, disposable email, velocity)	Premium+	Yes (6 templates, Free)
Dispute evidence packets (signed PDF + JSON)	—	Scale+
Auto-cancel high-risk orders	Shopify Plus tier	Max tier
Lighthouse store audits (LCP, CLS, INP)	—	Yes (Free, unlimited)
Free tier monthly bot blocks	4 IP + 4 country rules	50 actual blocks

Sources: Blockify App Store listing (apps.shopify.com/blockify, 1,447 reviews, 4.9 stars as of 2026-05-22) and SOptim pricing page. Dashes mean the feature isn't documented on the public listing — not that it's impossible to add later.

The one quote that decides it

This is from Blockify's own support team, on the public App Store reviews page, responding to a merchant who was confused that bots were still hitting checkout despite having Blockify installed:

"On Shopify, the checkout page is a protected area, meaning no third-party app (including Blockify) can fully prevent visitors or bots from entering checkout or creating abandoned checkouts. This is a platform-level limitation across the entire Shopify ecosystem, not specific to our app or plan."

Read that carefully. Blockify is telling you, accurately, that storefront-level apps cannot block at checkout. They can't. Shopify locks the checkout page down — third-party JavaScript can't run there, third-party redirects can't fire there, third-party rate limits don't apply there.

Until 2023, that was the end of the story. Then Shopify shipped Functions — server-side WebAssembly modules that run inside Shopify's own infrastructure, with explicit hooks like cart.validations.generate.run that fire during checkout. A Function gets to inspect the cart, the buyer's IP, custom attributes from theme extensions, shop metafields — and either allow the checkout or refuse it with a message the buyer sees.

SOptim's Validation Function reads our behavior score, our heavy fingerprint hash, our quota state, and the Defense Network reputation lookup. If a session looks like a card-tester — say, behavior score under 30, fingerprint seen blocking on three other stores in the last week, ASN matching a known hosting provider — the Function refuses the checkout. The buyer sees a message you control. No abandoned-checkout junk in your funnel.

This is the architectural gap between the two apps. Blockify isn't refusing to do it — it's running at a layer where it can't.

Where Blockify is the better pick

Three real cases where we'd point you at Blockify instead of SOptim, with no caveat:

• You need country-based redirects. SOptim blocks or allows by country, but it doesn't redirect a visitor from store.com to store.com/eu/ based on geo. Blockify does.
• You need an age verification gate. A landing modal that gates entry by date of birth. Blockify has this. SOptim doesn't.
• You sell digital downloads and want right-click disabled on images. Blockify's content-protection feature does this. SOptim chose not to ship it because it doesn't actually stop a determined scraper, but if your brief from a stakeholder is "disable right-click," Blockify ticks that box and SOptim doesn't.

Where SOptim is the better pick

Symmetrically, here's where SOptim handles cases Blockify either can't reach or only addresses on its higher tiers:

• You're seeing failed-card transactions despite Blockify being installed. Card-testing bots are reaching your checkout and the storefront block isn't catching them. This is the Validation Function gap. SOptim's order-rules templates (disposable email, BIN-country mismatch, IP velocity) plus the checkout-time behavior score catch the class of attack Blockify's architecture can't.
• You want one app to cover bots and order fraud. Blockify's order fraud filters are on the $19.99/mo Enterprise tier. SOptim's first six order-rule templates — disposable email block, BIN country mismatch flag, shipping-to-high-risk-country block, large-order-from-new-customer flag, same-IP-multiple-emails velocity block, invalid-phone flag — all ship on the Free tier.
• You operate multiple Shopify stores. A bot blocked on one SOptim-installed store earns reputation that protects the others, via the Defense Network. No equivalent in Blockify's stack.
• You handle disputes regularly. SOptim's Scale tier auto-generates a signed PDF + JSON evidence packet per blocked checkout — GDPR-safe, timestamped, ready to upload to a Visa or Mastercard dispute. Blockify doesn't ship dispute evidence.
• You want a free site audit alongside fraud defense. SOptim's audit module is unlimited on the Free tier — full Lighthouse Performance, Accessibility, SEO, Best Practices, with PDF download. Bundled because the same theme.js that hosts our behavior signals also reports Core Web Vitals.

Pricing, side by side

Both apps charge in USD, monthly through Shopify's billing system, with annual discounts. Snapshot taken 2026-05-22 from each app's public pricing page.

Tier	Blockify	SOptim
Free	4 IP + 4 country + 4 redirect rules; first 200 visitor records	50 bot blocks/mo + unlimited audits + 5 countries / 10 IPs + 24h RUM
Entry paid	$9.99/mo Premium — unlimited blocks, VPN auto-block, content protection	$19/mo Grow — 500 blocks/mo, VPN+iCloud Relay, 5 custom rules, 30d RUM
Mid paid	$19.99/mo Enterprise — TOR, referrer block, conditional checkout block, fraud order filters	$49/mo Scale — unlimited blocks, 50 custom rules, full Defense Network, dispute evidence, Slack+Klaviyo
Top paid	$39.99/mo Plus — auto-cancel high-risk, 24/7 support (Shopify Plus stores)	$99/mo Max — 3 shops, ML auto-tuning, revenue impact, Care tier (2h/mo dev), 4h founder SLA

For most stores the meaningful comparison is Blockify Premium ($9.99) vs SOptim Grow ($19). SOptim Grow costs about twice as much but covers a different scope — order-level fraud rules, checkout-time blocking, behavior scoring, Defense Network participation. If those map to problems you actually have, the math works. If you just need country and IP rules, Premium is cheaper.

Can you run both at once?

Yes. They sit at different layers and don't conflict. We've seen merchants run Blockify for country-blocking + right-click disable + age-gate, and SOptim alongside it for checkout-block + Defense Network + audits. Both apps respect the Shopify Theme Editor — install order doesn't matter.

If you do run both, watch for double-counted blocked sessions in your analytics. Each app reports its own block count; the visitor was only blocked once.

How to switch (or add SOptim)

Install SOptim from the App Store, run through the 4-step onboarding (your industry + your Auto-Pilot mode + theme activation + your first quick-protection country list). Free tier — no credit card, no trial countdown. The audit runs on the homepage and one sample product page; results land in the dashboard within about 90 seconds.

If after a week your Blockify dashboard and our dashboard tell consistent stories, you'll know which gaps each fills for your traffic. Reviews are unanimous on one thing: bot defense looks different in every storefront's logs.

Footnotes

• Blockify install count and review count taken from apps.shopify.com/blockify on 2026-05-22.
• The Blockify support quote is paraphrased from a public reply on their App Store reviews page; we cite it because it's a useful piece of customer education that we couldn't have said better.
• SOptim is independent and is not affiliated with Blockify or Omega Theme. We have not used the Blockify app in production.
• We will update this page when either app ships meaningful changes. Last review: 2026-05-22.