DiffMate ‑ Asset Compare Tool vs Theme Upgrade Buddy
Two Shopify apps, side by side: detected stores, momentum, reviews, plans, listed features and who runs each. Store counts as of Sep 3, 2026 for DiffMate, Feb 19, 2026 for Theme Upgrade Buddy.
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.
Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.
See every featureDiffMate is a convenient way to see the asset differences between different versions of your theme. Filter to see only assets that have changed, all assets, or if they exists on one but not both. Our diff-editor allows you to copy specific changes (or entire files) from one theme to another.
When you upgrade your Shopify theme version, custom code and styles may differ between versions. This app compares your current theme with a new version and shows every difference. Works with ANY theme, not just specific vendors. Files are grouped by risk level so you know what needs attention first. Review changes in a side-by-side diff viewer, copy custom code with one click, and download a report.
- See all your themes including hidden developer themes created by developer tools
- Easily generate an overview of all the asset changes between themes
- Compare assets line-by-line to see any differences using our diff-editor
- Using the diff-editor you can copy files or specific changes between themes
- Compare any two themes and instantly see every difference between them
- Side-by-side code viewer highlights exactly what changed in each file
- Files sorted by risk level so you tackle critical changes first
- Download a full report to track progress and share with your team
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 |  DiffMate |  Theme Upgrade Buddy |
|---|---|---|
| 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 | DiffMate | Theme Upgrade Buddy |
|---|---|---|
| App Store rating | 4.3 ★ | Not published |
| App Store reviews | 14 | Not published |
| New reviews, 28 days | 0 | Not enough data |
| Reviewers a year or more in | Not enough data | Not enough data |
Pricing
| Measure | DiffMate | Theme Upgrade Buddy |
|---|---|---|
| Free plan | Not listed | Not listed |
| Lowest paid monthly plan | No monthly plan listed | No monthly plan listed |
| Longest free trial | Not listed | Not listed |
| Plans listed | Not published | Not published |
Listing
| Measure | DiffMate | Theme Upgrade Buddy |
|---|---|---|
| Shopify category rank | #57(ahead) | #120 |
| Shopify App Charts | Not on this week’s charts | Not on this week’s charts |
| Built for Shopify | No | No |
| Launched | Dec 6, 2023 | Jan 1, 2026 |
| Languages | 1 | 1 |
| Developer | 84Labs | HASAN ARMSTRONG LLC |
FAQ
DiffMate and Theme Upgrade Buddy: 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 Sep 3, 2026 for DiffMate, Feb 19, 2026 for Theme Upgrade Buddy; 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 Sep 3, 2026 for DiffMate, Feb 19, 2026 for Theme Upgrade Buddy. 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.