Size Charts Shopify Apps – Analytics & Insights

Pify Size Charts & Size Guides ranks #1 for size charts with 11.6% share — the leader position in a fragmented field where many apps are within striking distance, -19.5pp ahead of MP Size Chart & Size Guide (31.2%). Smart Size Chart & Fit Finder sits at #3 with 8.1% share, rounding out the top tier. The top 3 apps together control 50.9% of size charts installs — a clear leadership tier with a meaningful long tail behind them. AI Frame ‑ Try On & Size Chart is the standout mover this month, climbing 9 positions — 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.

Size Charts is a fragmented market — the top 3 apps together hold only 50.9% of installs, leaving Pify Size Charts & Size Guides's 11.6% lead modest in absolute terms and Smart Size Chart & Fit Finder at 8.1% still capturing meaningful share. With this many viable apps, pricing model and integration depth differentiate size charts options more than rank does.

Pify Size Charts & Size Guides climbed from #3 (May 2026) to #1 (Sep 2026) — a 2-position gain among size charts apps over the charted window. Among the top 5 plotted size charts apps, 2 improved and 2 declined — rankings reshuffled without a single category-wide direction. Pify Size Charts & Size Guides's share held near 11.6% from May 2026 to Sep 2026 — a stable install base for size charts apps rather than active gain or loss.

A 2-position move for the leader over the charted size charts window is large enough to reflect real merchant adoption shifts, not just App Store noise — Pify Size Charts & Size Guides's climb as of Sep 2026 is the strongest trajectory signal in this chart.

United States leads geographic demand for size charts apps at 23.6%, but the install base is meaningfully spread across multiple top markets. Netherlands follows at 11.4%, with India at 7.7%. Together, the top 3 markets account for 42.7% of size charts app installs worldwide. United Kingdom (7.2%) and Australia (7.1%) round out the top 5. Australia is the fastest-growing market this month (+1.2pp), pointing to accelerating demand outside the established leaders.

size charts app demand is split between United States (23.6%), Netherlands (11.4%), and India (7.7%) — the leaders in moderately distributed categories like this usually invest in multi-currency, multi-language support, making them workable for cross-border size charts merchants.

Kiwi Size Chart & Recommender is the only app in this set to have crossed 1,000 reviews, reaching the milestone in 90 months since launch. The remaining 4 size charts apps tracked here are still building toward 1,000 — current cumulative review counts give the clearest picture of where each one stands today.

4 apps on this chart haven't yet crossed 1,000 reviews: MP Size Chart & Size Guide at 821, Smart Size Chart & Fit Finder at 133, Jotly Size Chart & Size Guide at 66, Pify Size Charts & Size Guides at 35 cumulative reviews. MP Size Chart & Size Guide is closest to the milestone — its current count puts it roughly 82% of the way to 1,000.

Kiwi Size Chart & Recommender is the only app in this set to have crossed 1,000 reviews so far — a useful signal for merchants that one app has already proved sustained adoption while the others remain in the "promising but unproven" tier of the size charts category.