How does AppRanks pick the top Custom product apps for Shopify App Store?

Apps appear here because Shopify App Store itself classifies them under Custom product — AppRanks does not editorially add or remove apps from this category set. Within the category, ranking uses average rating times the natural log of review count (rating × ln(reviewCount + 1)), which keeps a single 5-star outlier from leapfrogging an established listing while still letting a very-well-rated mid-volume app rank above a poorly-reviewed giant. The page refreshes daily from the canonical Shopify marketplace listing. AppRanks does not accept payment to alter ranking on public surfaces.

How often does this custom product apps list update?

Every 24 hours. AppRanks pulls fresh rating, review count, and pricing-tier data from each app's Shopify marketplace listing nightly. Apps that lose Shopify App Store's category tag (e.g., a developer changes the listing's primary category) drop off in the next nightly snapshot. The page itself is cached at the CDN for 1 hour to absorb traffic spikes, so during a refresh window the visible list lags the underlying data by at most one hour.

What does "Pick if" mean on each top-3 entry?

"Pick if" is a data-derived recommendation that surfaces the most useful selection criterion for that app — high rating with deep review base means category default; free tier with broad adoption means budget-first pick; high rating with moderate review count means satisfaction-led pick. The framing is generated from the same rating + review count + pricing data shown on the card, not from editorial judgment or paid placement.

Where can I see the full methodology and audit scoring?

The full methodology — including the rating × ln(reviewCount + 1) blend, refresh cadence, conflict-of-interest policy, and the per-app audit-score breakdown — is documented on the AppRanks About page and the audit-score glossary entry. Every app on this list also has a dedicated audit page that walks through title, content, visuals, pricing, and category-tag scoring against the marketplace's published standards.

496 Best Custom product Apps for Shopify (2026)

AppRanks

rating × ln(reviewCount + 1)

#1
SE: Option Price Calculator
4.5(53)Free plan available
Ranks #1 in the Shopify App Store custom product category as a highly rated listing. Currently has an early-stage review volume (53 reviews, 4.5★ avg). Pricing: Free plan available. Position holds for the trailing 30-day window.
Pick if: Pick this if you prioritize merchant satisfaction over scale — SE: Option Price Calculator holds a 4.5-star average across 53 reviews in the custom product category.
View audit Compare to #2 →
#2
Color Swatch King: Variants
4.9(3129)Free plan available
Ranks #2 in the Shopify App Store custom product category as a category-leading listing. An established review history (3,129 reviews) with a 4.9-star average. Pricing: Free plan available. Position holds for the trailing 30-day window.
Pick if: Pick this if budget is the constraint — Color Swatch King: Variants ships a free tier and has 3,129 merchants reviewing it, so the no-card path is well-trodden.
View audit Compare to #1 →
#3
Variant Option Product Options
4.7(638)Free plan available
Ranks #3 in the Shopify App Store custom product category as a highly rated listing. Tracks at 4.7★ across 638 reviews — growing review traction. Pricing: Free plan available. Position holds for the trailing 30-day window.
Pick if: Pick this if you prioritize merchant satisfaction over scale — Variant Option Product Options holds a 4.7-star average across 638 reviews in the custom product category.
View audit Compare to #2 →
#4
King Product Options, Variants
4.7(482)Free
Holds position #4 in the Shopify App Store custom product category as a highly rated listing. Currently has a growing review traction (482 reviews, 4.7★ avg). Pricing: Free. Refresh: daily from the source marketplace.
View audit Compare to #3 →
#5
Drodl: Custom Product Options
5.0(7)Free to install
Currently sits at #5 in the Shopify App Store custom product category as a category-leading listing. An early-stage review volume (7 reviews) with a 5.0-star average. Pricing: Free to install. Refresh: daily from the source marketplace.
View audit Compare to #4 →
#6
BF Size Chart & Size Guide
4.7(139)Free plan available
Holds position #6 in the Shopify App Store custom product category as a highly rated listing. Tracks at 4.7★ across 139 reviews — growing review traction. Pricing: Free plan available. Refresh: daily from the source marketplace.
View audit Compare to #5 →
#7
Zepto Product Personalizer
4.9(1383)Free trial available
Currently sits at #7 in the Shopify App Store custom product category as a category-leading listing. Currently has an established review history (1,383 reviews, 4.9★ avg). Pricing: Free trial available. AppRanks tracks this listing on a 24-hour cycle.
View audit Compare to #6 →
#8
File Upload & Image ‑ Uploadly
4.8(149)Free plan available
Holds position #8 in the Shopify App Store custom product category as a category-leading listing. A growing review traction (149 reviews) with a 4.8-star average. Pricing: Free plan available. AppRanks tracks this listing on a 24-hour cycle.
View audit Compare to #7 →
#9
OPTIS Product Options, Variant
4.9(2335)Free plan available
Currently sits at #9 in the Shopify App Store custom product category as a category-leading listing. Tracks at 4.9★ across 2,335 reviews — established review history. Pricing: Free plan available. AppRanks tracks this listing on a 24-hour cycle.
View audit Compare to #8 →
#10
Variant Image Wizard + Swatch
4.7(226)Free plan available
Holds position #10 in the Shopify App Store custom product category as a highly rated listing. Currently has a growing review traction (226 reviews, 4.7★ avg). Pricing: Free plan available. Source: Shopify App Store's own published category position.
View audit Compare to #9 →

At-a-glance comparison

Same data as the ranked cards, condensed into a sortable-by-eye grid: rating × review depth × pricing tier across the top 10 custom product apps on Shopify App Store.

#	App	Rating	Reviews	Pricing
1	SE: Option Price Calculator	4.5★	53	Free plan available
2	Color Swatch King: Variants	4.9★	3,129	Free plan available
3	Variant Option Product Options	4.7★	638	Free plan available
4	King Product Options, Variants	4.7★	482	Free
5	Drodl: Custom Product Options	5.0★	7	Free to install
6	BF Size Chart & Size Guide	4.7★	139	Free plan available
7	Zepto Product Personalizer	4.9★	1,383	Free trial available
8	File Upload & Image ‑ Uploadly	4.8★	149	Free plan available
9	OPTIS Product Options, Variant	4.9★	2,335	Free plan available
10	Variant Image Wizard + Swatch	4.7★	226	Free plan available

Want to compare any two apps in detail (features, ratings trend, pricing plans side-by-side)? Open the head-to-head page from the "Compare to #N" link on each card above. Custom multi-app comparisons, historical rank trajectory, and CSV export are available on a paid plan.

Frequently asked

How does AppRanks pick the top Custom product apps for Shopify App Store?: Apps appear here because Shopify App Store itself classifies them under Custom product — AppRanks does not editorially add or remove apps from this category set. Within the category, ranking uses average rating times the natural log of review count (rating × ln(reviewCount + 1)), which keeps a single 5-star outlier from leapfrogging an established listing while still letting a very-well-rated mid-volume app rank above a poorly-reviewed giant. The page refreshes daily from the canonical Shopify marketplace listing. AppRanks does not accept payment to alter ranking on public surfaces.
How often does this custom product apps list update?: Every 24 hours. AppRanks pulls fresh rating, review count, and pricing-tier data from each app's Shopify marketplace listing nightly. Apps that lose Shopify App Store's category tag (e.g., a developer changes the listing's primary category) drop off in the next nightly snapshot. The page itself is cached at the CDN for 1 hour to absorb traffic spikes, so during a refresh window the visible list lags the underlying data by at most one hour.
What does "Pick if" mean on each top-3 entry?: "Pick if" is a data-derived recommendation that surfaces the most useful selection criterion for that app — high rating with deep review base means category default; free tier with broad adoption means budget-first pick; high rating with moderate review count means satisfaction-led pick. The framing is generated from the same rating + review count + pricing data shown on the card, not from editorial judgment or paid placement.
Where can I see the full methodology and audit scoring?: The full methodology — including the rating × ln(reviewCount + 1) blend, refresh cadence, conflict-of-interest policy, and the per-app audit-score breakdown — is documented on the AppRanks About page and the audit-score glossary entry. Every app on this list also has a dedicated audit page that walks through title, content, visuals, pricing, and category-tag scoring against the marketplace's published standards.

Methodology details: /glossary/audit-score · /about.

The 10 Best Custom product Apps for Shopify App Store (2026)

At-a-glance comparison

Frequently asked

Track these rankings over time