---
title: "ThemeMerge Shopify App Profile"
description: "When you build a redesign on a copy of your theme, edits made to the live theme in the meantime are lost on publish. ThemeMerge compares both themes against a baseline you record when the copy is made, so it knows what each side changed. Theme editor JSON merges key by key, keeping sections added on either side. Liquid, CSS and JavaScript merge line by line. You decide the remaining conflicts, then download the merged theme to upload and preview. Your live theme is never modified."
canonical_url: "https://shoplist.co/shopify-apps/thememerge"
markdown_url: "https://shoplist.co/shopify-apps/thememerge.md"
last_updated: "2026-11-11"
entity_type: "shopify_app"
slug: "thememerge"
source: "public Shopify app profile allowlist"
---

# ThemeMerge Shopify App Profile

> When you build a redesign on a copy of your theme, edits made to the live theme in the meantime are lost on publish. ThemeMerge compares both themes against a baseline you record when the copy is made, so it knows what each side changed. Theme editor JSON merges key by key, keeping sections added on either side. Liquid, CSS and JavaScript merge line by line. You decide the remaining conflicts, then download the merged theme to upload and preview. Your live theme is never modified.

## Quick answer
ThemeMerge has 0 detected stores in Shoplist. This Markdown profile displays 0 public brand examples; it is not a complete customer list.

## Key facts
- Name: ThemeMerge
- Monitoring status: First-adopter watch
- Developer: LazyDay Labs
- Developer profile: https://shoplist.co/app-developers/lazyday-labs
- Shopify App Store URL: https://apps.shopify.com/thememerge
- Launch date: November 11, 2026
- Shoplist category: Storefronts - Other
- Free plan signal: Yes

## Pricing summary
Free plan: Free; ThemeMerge PRO: $15/month

Shoplist has not yet found reliable public storefront evidence connecting a Shopify store to this app. This does not mean the app has no users. Some apps are new, admin-only, server-side, theme-independent, or otherwise difficult to detect from public storefront signals.


## Public callouts
- Three-way compare of live theme and working copy against a recorded baseline
- Theme editor JSON merged key by key, so sections added on both sides are kept
- Section and block order merged so both sides' additions stay in place
- Resolve conflicts one at a time, per file, or by editing the result directly
- Reads your live theme only and never writes to it
## Shopify App Store categories
- Storefronts - Other

## Data note
Profile updated: November 11, 2026. This is the profile revision date, not a guarantee that every store was checked on that date.
Public snapshot built: 2026-11-12 13:30:28.727696\+00
Public app evidence date: 2026-11-11 17:20:01.710131\+00
This generated Markdown profile intentionally exposes only public, stable app-profile fields and a small public app-stack sample from Shoplist. It excludes private contact data, people data, internal scores, crawl provenance, full datasets, and unstable operational fields.

## Related links
- [HTML app profile](https://shoplist.co/shopify-apps/thememerge)
- [Shopify apps directory](https://shoplist.co/shopify-apps)
- [Shoplist data methodology](https://shoplist.co/data-methodology.md)