Diatome — Resale & Buyback vs Tern Trade‑in
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 Tern Trade‑in.
The short answer
- On the Shopify App Store: Diatome 5.0 from 2 reviews and Tern Trade‑in 5.0 from 10 reviews.
- Tern Trade‑in lists 5 features Diatome’s listing doesn’t mention, including Discount codes, Email notifications, Return portal.
Head to head
Launch your own trade-in programme in just a few short steps
Momentum
New reviews each month
Review pace is the clearest public read on how fast an app is winning new merchants.
Standard: Trade-in
- · 100 Trade-in orders per month + 5 users
- · Auto-generate shipping labels & rewards
- · Build custom trade-in catalog
- · Calculate dynamic values by condition
- · Capture data + validate w/ image upload
- · Customise design + translate/edit copy
Pro: Resale
- · 200 Trade-in orders per month + 10 users
- · ALL Standard tier features, plus...
- · Advanced Trade-in Offers service
- · Automated Shopify resale relisting
- · Restock items against original SKU
- · Run scheduled reports
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.
Enable customers to trade-in products bought directly from you or somewhere else, then relist them for resale directly on your site. You define the trade-in rules and set the trade-in value, Tern automates the process, making it easy for your customers – and your team.
- 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
- Full control over trade-in credit pricing and eligibility criteria
- Flexible logistics make it easy to send back (or drop-off) trade-in items
- Automatically issue trackable credit for goods that are received
- Relist products for resale, reusing the data associated with every trade-in
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 |  Tern Trade‑in |
|---|---|---|
| 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 | Tern Trade‑in |
|---|---|---|
| App Store rating | 5.0 ★ | 5.0 ★ |
| App Store reviews | 2 | 10(ahead) |
| New reviews, 28 days | 0 | 0 |
| Reviewers a year or more in | Not enough data | Not enough data |
Pricing
| Measure | Diatome | Tern Trade‑in |
|---|---|---|
| Free plan | Not listed | Not listed |
| Lowest paid monthly plan | No monthly plan listed | $299/month |
| Longest free trial | Not listed | 30 days |
| Plans listed | Not published | 2 |
Listing
| Measure | Diatome | Tern Trade‑in |
|---|---|---|
| Shopify category rank | #107 | #84 |
| Shopify App Charts | Not on this week’s charts | Not on this week’s charts |
| Built for Shopify | No | No |
| Launched | Dec 13, 2023 | Aug 6, 2021 |
| Languages | 1 | 1 |
| Developer | Diatome | Tern Eco Ltd |
FAQ
Diatome and Tern Trade‑in: common questions
- Which has better reviews, Diatome or Tern Trade‑in?
- On the Shopify App Store: Diatome 5.0 from 2 reviews and Tern Trade‑in 5.0 from 10 reviews.
- What features does each app list that the other doesn’t?
- Tern Trade‑in lists 5 the others don’t mention, such as Discount codes, Email notifications, Return portal, Return tracking. 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 Mar 13, 2026 for Diatome, Oct 13, 2026 for Tern Trade‑in; 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 Tern Trade‑in. 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.