Side-by-side comparison · 24 data points
No-code A/B Testing and Website Personalization CRO platform built for marketers
| CustomFit AI A/B Testing & CRO | FBP | Fast Bundle & Upsell App | |
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| Description | ||
| Screenshots | images | images |
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All bundle types to boost AOV with upsell offers: Free Gift, BOGO, FBT, add-ons & volume discounts
| Metric | CustomFit AI A/B Testing & CRO | FBP | Fast Bundle & Upsell App |
|---|---|---|
| Rating | 5.0 ★ | 5.0 ★ |
| Total reviews | 20 | ★ 3.1k |
| Free plan | Yes | Yes |
| Pricing | Free plan available | Free to install |
| Built for Shopify | — | ★ Yes |
| Pricing tiers | 3 tiers | ★ 4 tiers |
| Listed features | 5 | 5 |
| Featured placements | — | 2 |
| Languages | 1 supported | 10 supported |
| Listed since | May 2023 | Nov 2020 |
CustomFit AI A/B Testing & CRO and FBP | Fast Bundle & Upsell App are evenly matched on rating (5.0★ vs 5.0★) — the differentiator comes down to pricing fit, feature breadth, and which app's interaction pattern suits your team's workflow. Pricing entry tiers: CustomFit AI A/B Testing & CRO at Free plan available, FBP | Fast Bundle & Upsell App at Free to install. Check each app's tier structure for the capacity limits you actually need before deciding — the headline number is the same shape, but the gating shape per tier (apps, orders, integrations) varies. FBP | Fast Bundle & Upsell App has the larger user base (3,067 reviews vs 20), which usually maps to broader integration coverage, faster bug-fix cadence, and a deeper bench of community workflow patterns. CustomFit AI A/B Testing & CRO's smaller cohort can be an advantage for niche workflows where the bigger app has accumulated bloat. Recommended evaluation path: install both apps' free tiers (where available) and run them in parallel on a small cohort of orders for 7-14 days before committing. The data tables below show the per-feature breakdown — for most merchants the deciding factor will be a single integration or workflow detail that's hard to compare from listing pages alone. This verdict is generated from the live marketplace data on this page — rating, review count, pricing tier, and category position all refresh from the canonical Shopify App Store listing every 24 hours. AppRanks does not accept payment to influence comparison outcomes; the methodology is documented on the About page and applies identically to every pair on the site.
Read each app's audit: CustomFit AI A/B Testing & CRO audit • FBP | Fast Bundle & Upsell App audit
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| Keyword | CustomFit AI A/B Testing & CRO | FBP | Fast Bundle & Upsell App |
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| testing | #18 | #24 |
Not featured in any section recently.
Both CustomFit AI A/B Testing & CRO and FBP | Fast Bundle & Upsell App offer paid plans only. CustomFit AI A/B Testing & CRO starts at Free plan available; FBP | Fast Bundle & Upsell App starts at Free to install. Compare the per-tier features in the Pricing section above before committing.
CustomFit AI A/B Testing & CRO (5.0★, 20 reviews) and FBP | Fast Bundle & Upsell App (5.0★, 3,067 reviews) are essentially tied on rating. Look at review velocity and individual reviewer quotes — both visible on each app's detail page — to differentiate.
It depends on what you're optimizing for. CustomFit AI A/B Testing & CRO fits better if you prioritize broader integrations; FBP | Fast Bundle & Upsell App is the call if you need the larger user base. Read both apps' detail pages on AppRanks for the full feature breakdown, install counts, and recent listing changes.
Both apps are one-click installs from the Shopify App Store marketplace. FBP | Fast Bundle & Upsell App has more onboarding documentation maturity (3,067 reviews vs 20), which usually translates to better-tested setup wizards and quicker time-to-value. AppRanks doesn't measure setup time directly — read the recent reviews on each app's detail page for merchant-reported install experience.
CustomFit AI A/B Testing & CRO typically suits early-stage and growth-mode stores based on its review-base composition (20 reviews). FBP | Fast Bundle & Upsell App aligns more with early-stage and growth-mode stores (3,067 reviews). Larger review bases generally mean the app has been load-tested at scale — relevant if you're processing high order volume or handling enterprise compliance requirements.
Migration support varies by app and category. CustomFit AI A/B Testing & CRO and FBP | Fast Bundle & Upsell App both publish their export options on their marketplace listing pages (or in their support docs); some apps offer one-click import from competitors, others require CSV. The fastest check: search "import from CustomFit AI A/B Testing & CRO" in each app's help center. AppRanks does not track migration tooling directly — this is a category-specific capability worth verifying before commitment.
