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TOP SHOPIFY APPS YOU CAN COMPARE
Three highly-rated Shopify apps to compare against SellUp: Add ons & Cart Upsell.
The top-rated Shopify apps by rating × review-volume — a useful comparison baseline against SellUp: Add ons & Cart Upsell.
#1TOP PICK
Judge.me Product Reviews App
Apps5.0041,301 reviews
95/100Audit score
Pick if you want feature parity
Strongest fit on feature parity. The most direct functional swap. Shares apps feature signature, comparable workflows, and a similar audit-score band — switch costs are usually lowest here.
#2RUNNER-UP
TikTok
Apps4.8013,283 reviews
84/100Audit score
Pick if you're cost-sensitive
Wider scope, slightly different focus. Wider feature surface than the source app's focus area. Useful if you're shopping apps alongside adjacent capabilities you'd otherwise integrate separately.
#3VALUE PICK
Appstle℠ Subscriptions App
Apps5.007,656 reviews
91/100Audit score
Pick if you live in workflows
Established alternative with audit-grade listing. Established option with the rating + review depth to be vendor-evaluated. Best when running this category at scale and you can't afford early-stage product surprises.
SIDE-BY-SIDE COMPARISON
SellUp: Add ons & Cart Upsell versus the top 3.
Five rows, all loaded above the fold. Wins are highlighted; nothing's hidden behind a tab.
RANKS #4 THROUGH #12
The next 9, denser.
Lower-ranked but legitimate. Click any row for the full profile — or compare side-by-side with SellUp: Add ons & Cart Upsell.
How these alternatives are ranked
Scored daily. Three signals, weighted and blended. No vendor money changes anything.
45%Feature similarity
N-gram match against SellUp: Add ons & Cart Upsell's feature signature, weighted by category overlap.
35%Audit + rating
Listing quality (0–100) blended with rolling 90-day rating average. Penalizes thin listings.
20%Review velocity
Reviews added in trailing 30 days, normalized by category baseline. Surfaces rising challengers.
Every Shopifyalternative on this page is scraped, normalized, and re-scored every 24 hours. We don't accept paid placement, vendor-funded "best of" content, or sponsored ranking — and we publish the rules so you can audit them yourself. If a vendor disagrees with their position, that's between them and the data.
WHEN DOES IT MAKE SENSE TO SWITCH FROM SELLUP: ADD ONS & CART UPSELL?
Four reasons people leave.
Decision triggers, not marketing. If two or more apply, your shortlist starts with the apps named below each card.
Pricing has outgrown your usage
If your usage of SellUp: Add ons & Cart Upsell has crossed the second-tier breakpoint on its pricing plan, the per-unit cost is usually where alternatives diverge most clearly. Some apps in the list above carry generous free tiers; others are paid-from-day-one. If the gap between your monthly bill and the next-cheapest alternative exceeds 30%, the switch usually pays back inside one quarter.
TikTok · Judge.me Product Reviews AppYou need a feature outside the focus
Each Shopify category has a feature spectrum. The "Similar feature set" badge above marks alternatives whose feature signature most overlaps with SellUp: Add ons & Cart Upsell. The "Category leader" badge marks apps that may approach the same category from a different feature angle — useful if you want to widen rather than narrow your toolset.
Judge.me Product Reviews AppSupport response has slowed you down
Apps with average ratings above 4.7★ on substantial review volume (5K+) usually correlate with strong support-response baselines — public review pressure rewards timely, transparent help. Read the most recent reviews on each alternative's profile before switching; review velocity over the trailing 30 days is the freshest support-quality signal.
FREQUENTLY ASKED
Answers built from the data.
Built from the same scores the ranking uses — so they won't contradict the table.
For most accounts under typical category usage, the answer depends on tier. Judge.me Product Reviews App is in the freemium band (Free plan available), while SellUp: Add ons & Cart Upsell is freemium (Free to install). At parity scale, the cheaper option can save 30–60% — but feature-for-feature swaps usually narrow the gap above the second tier.
VERDICT · UPDATED TODAY
If you're moving from SellUp: Add ons & Cart Upsell, the most common landing spots are Judge.me Product Reviews App (medium feature match, audit 95/100) and TikTok (pricing leverage + breadth). Skip Pop Convert ‑ Pop Ups, Banners unless your use case is unusual.
If feature parity matters most
→ Judge.me Product Reviews App
Medium feature parity. Audit 95, 5.00★.
If pricing matters most
→ TikTok
Best for cost-sensitive teams. 4.80★ across 13,283 reviews.
If you're scaling enterprise
→ Appstle℠ Subscriptions App
Strongest scale fit when category usage exceeds typical thresholds. Vendor-evaluate before committing.
Continue your research
Audit SellUp: Add ons & Cart Upsell's listing
See where SellUp: Add ons & Cart Upsell ranks 0–100 on listing completeness, screenshots, and description quality.
Open auditSellUp: Add ons & Cart Upsell vs Judge.me Product Reviews App
Side-by-side feature deltas, shared keywords, rating curves over the trailing 12 months.
Open compareShopify category leaders
Highest-rated Shopify apps by intent. The category-by-category leaderboard.
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