Diatome — Resale & Buyback vs PostCo Resale
Two Shopify apps, side by side: detected stores, momentum, reviews, plans, listed features and who runs each. Store counts as of Mar 13, 2026 for Diatome, Oct 13, 2026 for PostCo Resale.
The short answer
Head to head
Momentum
New reviews each month
Review pace is the clearest public read on how fast an app is winning new merchants.
Standard
- · Automated cash and store credit payout
- · Automated shipping labels
- · Branded seller portal
- · Product listing image audit and approvals
Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.
See every featureOne platform. Three ways to resell. Sell your unsold stock (returns, end-of-line, overstock) as pre-owned. Accept trade-ins from customers via an embedded form, pay them in store credit or cashback. Enable C2C so customers resell to each other on your store. All-in-one: mixed basket with new + second-hand, single checkout, automated payouts, full dashboard. White-label, no code required.
Tap into a growing market of eco-conscious and sustainable consumers with your own fully-integrated and branded resale platform on your Shopify store, while continuing to retain your customers beyond your return window. Set up your own peer-to-peer resale initiative that allows customers to buy and sell from each other for cash or store credit.
- Diatome makes integrating second-hand product resale easy, flexible and quick
- Let customers combine new and second-hand items in one basket, one payment
- Complete logistics: Diatome manages orders to payment in gift cards in Europe
- Manage all your second-hand products, clients and orders from a single interface
- Customers can opt for brand new and pre-owned items in the same checkout
- Customers can list items for resale from their purchase history
- Automated cash and store credit payout for every successful transaction
- Automated shipment labels for sellers (USPS, Auspost, Royal Mail & more)
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 |  Diatome |  PostCo Resale |
|---|---|---|
| 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 | Diatome | PostCo Resale |
|---|---|---|
| App Store rating | 5.0 ★ | Not published |
| App Store reviews | 2 | Not published |
| New reviews, 28 days | 0 | Not enough data |
| Reviewers a year or more in | Not enough data | Not enough data |
Pricing
| Measure | Diatome | PostCo Resale |
|---|---|---|
| Free plan | Not listed | Not listed |
| Lowest paid monthly plan | No monthly plan listed | $89/month |
| Longest free trial | Not listed | 14 days |
| Plans listed | Not published | 1 |
Listing
| Measure | Diatome | PostCo Resale |
|---|---|---|
| Shopify category rank | #107 | #60 |
| Shopify App Charts | Not on this week’s charts | Not on this week’s charts |
| Built for Shopify | No | No |
| Launched | Dec 13, 2023 | Oct 14, 2024 |
| Languages | 1 | 1 |
| Developer | Diatome | PostCo |
FAQ
Diatome and PostCo Resale: common questions
- 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 Mar 13, 2026 for Diatome, Oct 13, 2026 for PostCo Resale; 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 Mar 13, 2026 for Diatome, Oct 13, 2026 for PostCo Resale. 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.