Thunder Sliding Cart Upsell vs Hitsy Progress Bar
Two Shopify apps, side by side: detected stores, momentum, reviews, plans, listed features and who runs each. Store counts as of Nov 5, 2026 for Thunder Sliding Cart Upsell, Nov 8, 2026 for Hitsy Progress Bar.
The short answer
- On the Shopify App Store: Thunder Sliding Cart Upsell 5.0 from 38 reviews and Hitsy Progress Bar 4.9 from 96 reviews.
- Both list a free plan. Paid plans start at $9.99/month for Thunder Sliding Cart Upsell and $5.90/month for Hitsy Progress Bar.
- Thunder Sliding Cart Upsell lists 27 features Hitsy Progress Bar’s listing doesn’t mention, including A/B testing, Additional fees, AI recommendations.
Head to head
- United States
- India
- Germany
Momentum
New reviews each month
Review pace is the clearest public read on how fast an app is winning new merchants.
Free
- · Announcement bar
- · Custom cart design
- · Free shipping bar
- · Payment icons
0-200 Orders
- · 14 Day Trial
- · Add-Ons/One Click Upsells
- · Custom HTML & CSS
- · Free Shipping Progress Bar
- · Fully Customizable
- · Multiple Free Gifts with Tiers
201-500 Orders
- · 14 Day Trial
- · Add-Ons/One Click Upsells
- · Custom HTML & CSS
- · Free Shipping Progress Bar
- · Fully Customizable
- · Multiple Free Gifts with Tiers
501-1000 Orders
- · 14 Day Trial
- · Add-Ons/One Click Upsells
- · Custom HTML & CSS
- · Free Shipping Progress Bar
- · Fully Customizable
- · Multiple Free Gifts with Tiers
Starter
- · Cart value based rewards
- · Custom bar placement options
- · Efficient support
- · Free shipping, order discounts and gifts
- · Item quantity based rewards
- · Match you store's design
Unlimited
- · Cart value based rewards
- · Custom bar placement options
- · Efficient support
- · Free shipping, order discounts and gifts
- · Item quantity based rewards
- · Match you store's design
Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.
See every featureThunder grows your average order value with upsells, gifts and bundles picked by AI that learns from your own sales data. Add a cart drawer with a rewards bar, free gifts and one-click upsells, and product page bundles, quantity breaks and mix and match. One discount engine keeps offers from clashing. Track every offer from impression to revenue, A/B test changes and set different offers per market.
Increase AOV with a progress bar for free shipping, discounts and free gifts. Create multiple reward tiers based on cart value or item count, including Buy X Get Y / BOGO offers. Customize your progress bar with icons, reward labels, fonts and custom CSS for a unique look. Choose automatic discount creation or create your own discounts manually. Display it in your cart, product page or any custom position.
- Offer bulk discounts and see your customers spend more. Boost sales effortlessly
- Unlock free gifts with orders over a set amount or specific products added!
- Dynamic progress bar tracks free shipping and gift goals in real time
- Fully customizable fonts, colors, texts, sticky checkout, multilanguage.
- Show up to five reward tiers, hide bar when empty or show current tier only
- Offer rewards based on cart value or number of items in cart
- Fully customisable design to match your store’s look and feel
- Matches your store's text font and currency
All the numbers
Every figure, side by side
A green dot marks the app ahead on a measured figure. Estimates, gaps and apps that leave no storefront trace never take the lead.
Adoption
| Measure |  Thunder Sliding Cart Upsell |  Hitsy Progress Bar |
|---|---|---|
| Detected stores | Not published | 745 |
| Net store change, 28 days | 0 | −1 |
| Stores added, 28 days | Not enough data | 28 |
| Big-brand share | Not enough data | 15% |
| Top store categories | Not published | Apparel & Accessories, Health & Beauty, Food, Beverages & Tobacco |
| Top store countries | Not published | United States, India, Germany |
Reviews
| Measure | Thunder Sliding Cart Upsell | Hitsy Progress Bar |
|---|---|---|
| App Store rating | 5.0 ★(ahead) | 4.9 ★ |
| App Store reviews | 38 | 96(ahead) |
| New reviews, 28 days | Not enough data | Not enough data |
| Reviewers a year or more in | 4%(ahead) | 0% |
Pricing
| Measure | Thunder Sliding Cart Upsell | Hitsy Progress Bar |
|---|---|---|
| Free plan | Yes | Yes |
| Lowest paid monthly plan | $9.99/month | $5.90/month(ahead) |
| Longest free trial | 14 days | 7 days |
| Plans listed | 4 | 2 |
Listing
| Measure | Thunder Sliding Cart Upsell | Hitsy Progress Bar |
|---|---|---|
| Shopify category rank | #105 | #30 |
| Shopify App Charts | Not on this week’s charts | #9 in Cart customization |
| Built for Shopify | No | Yes |
| Launched | Jul 8, 2022 | Feb 20, 2025 |
| Languages | 1 | 1 |
| Developer | Enigma Apps | Hitsy Apps |
FAQ
Thunder Sliding Cart Upsell and Hitsy Progress Bar: common questions
- Is Thunder Sliding Cart Upsell or Hitsy Progress Bar cheaper?
- Both list a free plan. Paid plans start at $9.99/month for Thunder Sliding Cart Upsell and $5.90/month for Hitsy Progress Bar. Shoplist compares base prices only between monthly plans in the same currency; usage charges and annual plans vary, so check each plan’s limits.
- Which has better reviews, Thunder Sliding Cart Upsell or Hitsy Progress Bar?
- On the Shopify App Store: Thunder Sliding Cart Upsell 5.0 from 38 reviews and Hitsy Progress Bar 4.9 from 96 reviews.
- What features does each app list that the other doesn’t?
- Thunder Sliding Cart Upsell lists 27 the others don’t mention, such as A/B testing, Additional fees, AI recommendations, Bundles. Hitsy Progress Bar lists 2 the others don’t mention, such as Product page upsell, Tiered discounts. A feature missing from a listing may still be supported; this compares what each App Store listing says.
- Where does this comparison’s data come from?
- Shoplist crawls Shopify storefronts to detect which apps each store runs, and reads each app’s Shopify App Store listing for reviews, pricing, features and integrations. Store counts are as of Nov 5, 2026 for Thunder Sliding Cart Upsell, Nov 8, 2026 for Hitsy Progress Bar; estimated figures are labeled.
How Shoplist compares apps
Store counts come from Shoplist’s crawl of Shopify storefronts, which detects the apps each store runs; they are as of Nov 5, 2026 for Thunder Sliding Cart Upsell, Nov 8, 2026 for Hitsy Progress Bar. Reviews, ratings, plans, features and integrations come from each app’s Shopify App Store listing. 28-day figures are labeled when estimated, and a figure that is missing or estimated never decides who leads. Read the methodology.