Custom Checkout Shopify Apps – Analytics & Insights

Checkout Plus dominates custom checkout with 49.1% market share — a clear category leader Shopify merchants gravitate to first, 36.1pp ahead of Checkout Rules & Discounts (13.0%). Shopify Checkout Blocks sits at #3 with 24.2% share, rounding out the top tier. Together, the top 3 apps absorb 86.2% of all custom checkout installs — a highly concentrated landscape with limited room for new entrants. Qikify Checkout Customizer is the standout mover this month, climbing 7 positions — a momentum signal worth tracking.

Checkout Plus still holds 49.1% share of custom checkout apps, but rankings have moved this month — Qikify Checkout Customizer climbed 7 positions to #10, the strongest mover in the category. Sustained rank gains of this size usually indicate active product development, so the climbers are worth comparing on feature roadmap and support quality.

Checkout Plus climbed from #81 (Sep 2025) to #1 (Sep 2026) — a 80-position gain among custom checkout apps over the charted window. Across the top 5 plotted custom checkout apps, 4 improved their ranking while 1 declined — the category is moving upward overall. Checkout Plus's share expanded +48.4pp from 0.7% (Nov 2025) to 49.1% (Sep 2026) — a sustained widening of the gap against other custom checkout apps over this window.

A 80-position move for the leader over the charted custom checkout window is large enough to reflect real merchant adoption shifts, not just App Store noise — Checkout Plus's climb as of Sep 2026 is the strongest trajectory signal in this chart.

United States dominates demand for custom checkout apps with 36.9% of all tracked installs — a single market that effectively defines the category's product priorities. Canada follows at 9.2%, with United Kingdom at 9.1%. Together, the top 3 markets account for 55.2% of custom checkout app installs worldwide. Netherlands (6.6%) and Australia (5.9%) round out the top 5. Netherlands is the fastest-growing market this month (+2.9pp), pointing to accelerating demand outside the established leaders.

With 36.9% of custom checkout app installs concentrated in United States, the leading apps in this category typically prioritize United States-based merchants for localization, currency, and support hours — merchants in Canada (9.2%) and other regions sometimes find better fit in apps that over-index outside United States.

None of the top 5 custom checkout apps tracked here have yet crossed 1,000 reviews. Shopify Checkout Blocks leads the set on current cumulative reviews with 187 — closest to the milestone, at roughly 19% of the way there.

With no app in this custom checkout set having crossed 1,000 reviews, the category is still in early adoption. Shopify Checkout Blocks is the closest to breaking out at 187 cumulative reviews — worth tracking its per-month review velocity to see whether it's on pace to cross the milestone first.