Custom Fields Shopify Apps – Analytics & Insights

Mini:Custom Fields Personalize ranks #1 for custom fields with 13.6% share — the leader position in a fragmented field where many apps are within striking distance, 6.4pp ahead of Accentuate Custom Fields (ACF) (7.2%). Magical Custom Fields App sits at #3 with 2.0% share, rounding out the top tier. The top 3 apps together hold only 22.8% — meaning custom fields is a fragmented market where lower-ranked apps still capture significant share. Shopify Checkout Blocks is the standout mover this month, climbing 1 position — a momentum signal worth tracking. Worth noting: the top-ranked app and the highest-share app aren't the same here — App Store rank and our market share metric (computed from review counts and other factors) move on independent dynamics, so cross-checking both views matters in this category.

Custom Fields is a fragmented market — the top 3 apps together hold only 22.8% of installs, leaving Mini:Custom Fields Personalize's 13.6% lead modest in absolute terms and Magical Custom Fields App at 2.0% still capturing meaningful share. With this many viable apps, pricing model and integration depth differentiate custom fields options more than rank does.

Mini:Custom Fields Personalize climbed from #34 (Sep 2025) to #1 (Sep 2026) — a 33-position gain among custom fields apps over the charted window. Across the top 5 plotted custom fields apps, 3 improved their ranking while 2 declined — the category is moving upward overall. Mini:Custom Fields Personalize's share expanded +13.1pp from 0.6% (Nov 2025) to 13.6% (Sep 2026) — a sustained widening of the gap against other custom fields apps over this window.

A 33-position move for the leader over the charted custom fields window is large enough to reflect real merchant adoption shifts, not just App Store noise — Mini:Custom Fields Personalize's climb as of Sep 2026 is the strongest trajectory signal in this chart.

United States dominates demand for custom fields apps with 34.0% of all tracked installs — a single market that effectively defines the category's product priorities. United Kingdom follows at 9.7%, with Australia at 6.9%. Together, the top 3 markets account for 50.6% of custom fields app installs worldwide. France (6.3%) and Canada (5.0%) round out the top 5. Canada is the fastest-growing market this month (+0.5pp), pointing to accelerating demand outside the established leaders.

With 34.0% of custom fields 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 United Kingdom (9.7%) and other regions sometimes find better fit in apps that over-index outside United States.

None of the top 5 custom fields apps tracked here have yet crossed 1,000 reviews. Helium Customer Fields leads the set on current cumulative reviews with 314 — closest to the milestone, at roughly 31% of the way there.

With no app in this custom fields set having crossed 1,000 reviews, the category is still in early adoption. Helium Customer Fields is the closest to breaking out at 314 cumulative reviews — worth tracking its per-month review velocity to see whether it's on pace to cross the milestone first.