Mergerate: Combined Shipping vs OneKit Shipping
Two Shopify apps, side by side: detected stores, momentum, reviews, plans, listed features and who runs each. Store counts as of Nov 6, 2026 for Mergerate, Oct 28, 2026 for OneKit Shipping.
The short answer
- Paid plans start at $24/month for Mergerate and $8.99/month for OneKit Shipping.
- Mergerate lists 2 features OneKit Shipping’s listing doesn’t mention, including Carrier-based, Multi-origin.
Head to head
Standard
- · Combined rates across locations
- · Rate request log
- · Your own flat rates by country
Early Adopter
- · For the first 100 stores
- · Kit items not charged twice
- · One shipping price per kit
- · Optional kit-only rate
- · Price locked for early stores
- · Weight tiers for other items
Standard
- · Kit items not charged twice
- · One shipping price per kit
- · Optional kit-only rate
- · Weight tiers for other items
Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.
See every featureWhen an order ships from more than one location, Shopify adds each location's app and carrier rates together, so a split cart can be charged shipping twice. Mergerate is a carrier service: it charges your own rates on one shipment and returns the same options at $0 on the others, with a label you choose. Set flat prices, countries and delivery estimates; it works best with flat rates.
Bundle apps often split a kit into its component items, and each item is rated as a small separate parcel. The customer pays a low rate while you pay to ship the whole box. OneKit Shipping adds a checkout rate that charges the one shipping price you set for each kit, without charging again for the items inside it. Other items in the cart are priced together by weight tiers you set.
- Split-cart rate requests answered as one shipping charge per order
- Your own flat rates, by country, with delivery estimates
- The same options at $0 on the other shipments, labelled
- Delivery estimates and your own label on the $0 shipments
- Set one fixed shipping price for each kit or bundle product variant
- Items inside a kit are not charged shipping a second time
- Other cart items are priced together using weight tiers you set
- Optional: show only the kit rate when a kit is in the cart
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 | ||
|---|---|---|
| Detected stores | Not published | Not published |
| Net store change, 28 days | 0 | 0 |
| Stores added, 28 days | Not enough data | Not enough data |
| Big-brand share | Not enough data | Not enough data |
| Top store categories | Not published | Not published |
| Top store countries | Not published | Not published |
Reviews
| Measure | ||
|---|---|---|
| App Store rating | Not published | Not published |
| App Store reviews | Not published | Not published |
| New reviews, 28 days | Not enough data | Not enough data |
| Reviewers a year or more in | Not enough data | Not enough data |
Pricing
| Measure | ||
|---|---|---|
| Free plan | Not listed | Not listed |
| Lowest paid monthly plan | $24/month | $8.99/month(ahead) |
| Longest free trial | 14 days | 7 days |
| Plans listed | 1 | 2 |
Listing
| Measure | ||
|---|---|---|
| Shopify category rank | Not enough data | Not enough data |
| Shopify App Charts | Not on this week’s charts | Not on this week’s charts |
| Built for Shopify | No | No |
| Launched | Nov 5, 2026 | Oct 27, 2026 |
| Languages | 1 | 1 |
| Developer | Sam Bartolotta | Ballena App |
FAQ
Mergerate and OneKit Shipping: common questions
- Is Mergerate or OneKit Shipping cheaper?
- Paid plans start at $24/month for Mergerate and $8.99/month for OneKit Shipping. Shoplist compares base prices only between monthly plans in the same currency; usage charges and annual plans vary, so check each plan’s limits.
- What features does each app list that the other doesn’t?
- Mergerate lists 2 the others don’t mention, such as Carrier-based, Multi-origin. OneKit Shipping lists 2 the others don’t mention, such as Product-based, Weight-based. 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 6, 2026 for Mergerate, Oct 28, 2026 for OneKit Shipping; 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 6, 2026 for Mergerate, Oct 28, 2026 for OneKit Shipping. 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.