Marius
Korbmacher

4-Week Done-for-You Social Proof Setup for €1M+ Shopify Brands

More revenue with social proof

In four weeks, I optimise and implement your social proof along the customer journey, based on existing A/B tests, studies and 8+ years of experience with large German Shopify stores.

Placement and design are tailored individually to your store. Reviews are rendered server-side, load quickly and are readable by Google and AI.

For €1M+ stores only. Implemented in a draft theme. Nothing goes live before you approve it.

Book a free discovery call

Send me your store

In a free, personalised 4-minute Loom video, I show you how to optimise the social proof on your product page.

I only use your address to reply. Privacy policy

8+ years of experience developing and optimising Shopify stores.

Built around your store
Reviews in your store's design, from the product page to the cart drawer.
Advice and implementation
I combine design and psychology with consulting and theme development.
Clear scope, fixed price
Before we start, you know exactly what I will deliver and what it will cost.
Implemented in four weeks
A clear schedule for the audit, development and feedback through to your approval.
1 / 4

Case studies

1 / 3
Giesswein Merino Runners WOMEN product page with an integrated product rating.

Giesswein

Keep REVIEWS.io. Use 85,000 reviews for dynamic size guidance.

For Giesswein, existing REVIEWS.io reviews needed to work within the new Shopify design. Fit responses help customers choose a size while the existing review collection process stays in place.

The implementation combines SKU filtering and product mapping with custom theme components: fit advice, a review slider, searchable reviews and ratings in predictive search and the cart drawer.

Read case study: Giesswein
Tisso product page for Pro EM san, with a star rating directly below the product title.

Tisso

6,000 Trustpilot reviews in a custom Shopify design

For Tisso, the existing reviews needed to match the Figma designs exactly within the Shopify store. The Trustpilot badge and public profile also needed to remain in place.

The implementation covered data sync configuration and custom theme components, from the announcement bar to the product page. The Trustpilot connector in the app I developed provides the data foundation; the design is implemented directly in the theme.

Read case study: Tisso
Landig product page for the W 50 meat grinder, with a star rating next to the price.

Landig

From review requests to the cart drawer

Landig needed its first complete review setup: reviews matching the store design, including dynamically loaded search suggestions and cart content. Review requests also needed to respect internal exclusion rules.

The implementation combines custom theme components with post-purchase requests that exclude specific orders based on their tags, plus Shopify discount codes as review incentives. Embedded PDP forms check login status and purchase history server-side: only customers who bought the product can review it there.

Read case study: Landig
Marius Korbmacher giving a talk

From Shopify developer to social proof specialist

About me

I have been developing and optimising Shopify stores for over eight years. Today, I focus on social proof: putting existing reviews to work, collecting new ones, using live purchase signals, and making it all fit the store's design.

I combine design and psychology with the technology behind them: data integration, theme development, server-side rendering, SEO, GEO and loading times.

The technical foundation is something I developed myself: reviews and purchase signals are stored directly in Shopify and displayed in the theme. This includes syncing existing reviews, aggregating real-time purchase signals, and customisable app blocks for displaying them in the store.

You work directly with me. I analyse your store, plan the improvements and handle the technical implementation.

I write about social proof on Shopify on LinkedIn.

Services

I handle the complete implementation for you: from analysis to approval in four weeks.

4-Week Done-for-You Social Proof Setup€8,000

For Shopify brands that want to hand over the entire analysis and implementation.

Analysis and planning

  • Analysis of the product page, collection page, homepage, one campaign page, header, footer, search, predictive search, cart, cart drawer, checkout and customer account pages
  • Assessment of design, placement and the review process. Prioritised actions backed by research, existing A/B tests and experience
  • Lighthouse testing, HTML, SEO and GEO analysis
  • Detailed technical specifications with Liquid, CSS and JavaScript, including potential issues in the current tech stack and alternatives

Design and technical implementation

  • Set up Shopify-native syncing, import or sync reviews and, where needed, set up the review process. Your existing review app can still be used
  • Integrate purchase signals from real order data, styled to match your store and placed at relevant points along the customer journey
  • Custom sections and blocks in your store's design, including fallbacks, thresholds, translations and markets
  • Server-side rendering directly in the theme, structured data and HTML content readable by Google and AI
  • Complete implementation in a draft theme. The live store remains untouched during development

Approval and handover

  • One revision round, QA and launch only after your approval
  • Handover with before-and-after measurements, a guide and a four-week delivery guarantee*
Book a free discovery call

* For every full week of delay that I am responsible for, you receive €500 credit towards the final payment.

Prefer to implement it yourself? The Audit and Blueprint give you the foundation.

Audit€1,500

A prioritised action list for your store.

You want to know where to start.

Audit + Blueprint€3,000

A technical blueprint for your developers.

Your team or agency handles implementation.

Your implementation in four weeks

From audit to handover. You approve at the key stages; I handle the implementation.

  1. Week 1

    Audit and plan

    I review your store, measure the starting point and recommend improvements, all summarised in a detailed report.

    Your part

    You read the report, consolidate feedback and approve the implementation scope after our call.

  2. Weeks 2–3

    Integration and implementation

    I connect the data and build sections and blocks in your design. Behaviour, fallbacks and testing are handled in the draft theme.

    Your part

    You approve the design.

  3. Week 4

    Feedback and handover

    I incorporate your feedback in one revision round and repeat the measurements. You receive documentation and a guide. The store goes live after your approval.

    Your part

    You consolidate feedback and accept the implementation. You then pay the remaining 50%.

Download the four-week implementation plan as a PDF

Four weeks. With a delivery guarantee.

For every full week of delay that I am responsible for, you receive €500 credit towards the final payment, capped at the amount of the final payment. I will still complete the agreed work.

Frequently asked questions

Can I keep my current review app?

Yes, no problem. My technical implementation works with any mainstream review app and keeps the data synced smoothly in real time. Alternatively, I can set up the new integration to collect new reviews as well. Both systems can run alongside each other during the transition.

How does the technical implementation work?

I integrate reviews and purchase signals as Shopify-native data and build their display directly into your theme using Liquid, CSS and JavaScript. The data comes from the Shopify app FiveOh Reviews on Metaobjects, which I developed specifically for this purpose: syncing existing reviews, collecting new ones and providing app blocks. Review text is rendered server-side and included in the HTML without JavaScript. I adapt the design and behaviour of the sections and blocks to your store, including dynamically loaded areas such as the cart drawer and predictive search. I work in the preview theme; the implementation only goes live after your approval.Explore the app and its features

What additional costs are there?

None for the Audit and Blueprint. For Implementation, the monthly app fees are not included. You can find the current plans on the app website.View app pricing

Can you work with my theme and agency?

I review your theme and customise sections and blocks with Liquid, CSS and JavaScript. If your agency will handle implementation, the Blueprint gives them detailed technical specifications. If your current tech stack has limitations, I explain them and the possible alternatives.

What if I don't have many reviews yet?

Then the focus is on collecting new reviews and making good use of the ones you have. I set up post-purchase emails and review forms, import existing reviews, and enable moderation and replies. Thresholds and fallbacks define what appears on products with few or no reviews.

How are the results measured?

I compare measurements before and after implementation: Lighthouse, delivered HTML, structured data and technical SEO. You measure conversion and revenue in your store's own figures. An increase in those metrics is not part of the delivery guarantee.