Get started Grow your Shopify store,
one app at a time.
Practical guides to the apps in the Seny library: what they do, when to use them, and how to set them up so they actually grow revenue.
How to show an upsell popup after add to cart on Shopify
The moment after “Add to cart” is when a shopper has just decided to buy, which makes it a good time to suggest a small add-on. Here’s how to set up a popup with the right products, show it at the right frequency, and keep it from getting in the way.
Read the guideMore posts
How to increase average order value on Shopify: 8 offers and how to pick one
Getting a shopper to add one more item is usually cheaper than finding a new shopper. Here are eight ways Shopify stores raise their average order value, which kind of store each one suits, and how to check that the higher basket really means more money for you.
Read the guideHow to add a rotating announcement bar to Shopify
The thin bar at the top of a store is the first thing every visitor sees. Here’s how to rotate several messages in it, link each one, show it only where it matters, and avoid the two-bars-on-top problem many themes end up with.
Read the guidePayment methods for a Shopify store in Lithuania: cards, bank links and the fees in between
Lithuanian shoppers are used to paying by bank link: pick your bank, confirm in its app, done. Shopify Payments has been available in Lithuania since 2025, but it doesn’t offer Lithuanian bank links. Here’s how to add them, how each provider looks at checkout and the Shopify fee that catches many stores out.
Read the guideTrust badges and payment icons on Shopify: what actually builds trust
A row of icons under the Add to cart button can answer a shopper’s last doubts: delivery, returns, payment. Generic badges like “100% Secure” or “Money-Back” say little, and some are illegal in the EU. Here’s how to write badges that hold up, and how to show the payment methods you really accept.
Read the guideThe 30-day lowest price rule: how to run honest sales on Shopify in the EU
When you sell to people in the EU and show a crossed-out price, that price has to be the lowest one you charged in the 30 days before the sale. Here’s how the rule works, which offers it covers and doesn’t, and how to set Shopify’s compare-at price so every sale badge tells the truth.
Read the guideEU packaging rules for online stores: what to register when you ship abroad
The EU Packaging Regulation (PPWR) has applied since 12 August 2026. If your Shopify store sends parcels to shoppers in other EU countries, you may now count as a packaging producer in each of them. Here’s what that means and where to start.
Read the guideHow to add a free gift with purchase on Shopify (added to the cart automatically)
“Spend $80, get a free gift” is easy to set up in Shopify, with one catch: shoppers have to find the gift and add it to the cart themselves. Here’s how to set up the discount, add the gift automatically and show shoppers how close they are.
Read the guideThe EU withdrawal button on Shopify: what the rule asks for and how to set it up
Since 19 June 2026, online stores selling to EU consumers need a clearly labelled “withdraw from contract” function. Shopify’s return and cancellation rules cover part of it. Here’s what the rule asks for, what Shopify gives you and what to check yourself.
Read the guideShopify discount not showing in the cart? 9 reasons and how to fix them
You created a discount, the shopper qualifies, and the cart still shows full price. Or two discounts should stack and only one applies. It’s rarely a bug: Shopify follows a handful of rules that the discount page doesn’t spell out. Here are the nine we see most.
Read the guideThe EU ban on vague green claims: what your online store can still say
Since 27 September 2026, vague claims such as “eco-friendly” or “climate neutral” are treated as misleading across the EU unless you can prove them. Here’s what changed, where such claims hide in a Shopify store and how to rewrite them.
Read the guideHow to build a custom Shopify feature with AI, without a developer
Not every idea has an app. Some are too small to hire a developer for, others too specific for any app in the store. Here’s how to describe a feature in plain words and get it working on your Shopify store, with a real example from start to finish.
Read the guideGPSR on Shopify: how to show manufacturer details and safety warnings on product pages
Since 13 December 2024, every online offer to EU consumers must show who made the product, how to contact them, and its safety warnings. Here’s what to show and how to add it to every Shopify product page with metafields, without an app.
Read the guideShopify’s “Buy it now” skips the cart: what it breaks and how to fix it
“Buy it now” and express checkout buttons send shoppers straight to checkout. That’s fast, but everything that happens in the cart is skipped: upsells, free gifts, gift messages and some discount codes. Here’s what breaks, what still works and how to decide.
Read the guideHow to set up tiered pricing on Shopify for a whole collection or tag
Tiered pricing rewards shoppers who buy more of the same product: 5% off two, 10% off three, 15% off five. Here’s how to set it up for a whole collection or tag at once, show a clear pricing table on the product page, and check what the cart really charges.
Read the guideHow to add a countdown timer to Shopify (without fake urgency)
A countdown timer works because a deadline is real. Fake ones that restart for every visitor are banned in the EU and quickly noticed by shoppers. Here’s how to add a timer for a real sale or a real cut-off, and which settings to avoid.
Read the guideHow to set a free shipping threshold on Shopify (and get more shoppers to reach it)
“Free shipping over $50” is one of the simplest ways to grow average order value, but only if shoppers know the offer exists and how close they are. Here’s how to pick the number, set it up in Shopify, and help shoppers reach it.
Read the guideHow to add a free shipping progress bar to Shopify without coding
A free shipping progress bar tells every shopper how far they are from free delivery and updates as they add products. Here’s how to set one up on a real Shopify store, step by step, with screenshots.
Read the guideHow to create mix-and-match bundles on Shopify
A mix-and-match bundle lets shoppers pick any products from a collection and get a discount for buying several. Here’s how to build a “choose any 3, save 20%” offer on a real Shopify store, step by step, with screenshots.
Read the guideHow to set up Shopify quantity discounts: buy 2, buy 3, save more
Quantity discounts reward shoppers for buying more of the same product. Here’s how to set up “buy 2, save 15%, buy 3, save 20%” on a real Shopify store, show the tiers on the product page, and see exactly how the discount behaves in the cart.
Read the guideHow to add frequently bought together products on Shopify
A “frequently bought together” section shows the products that go with the one a shopper is looking at, right next to the buy button. Here’s how to set one up on a real Shopify store, choose the pairings, and check what lands in the cart.
Read the guideHow to create a build-your-own box on Shopify
A build-your-own box gives shoppers a page where they fill a box with products they choose and save more the more they add. Here’s how to create one on a real Shopify store, from the product list to the discount in the cart.
Read the guideHow to add upsells to your Shopify cart drawer
The cart drawer is the last thing shoppers see before checkout, and the best moment to suggest one more product. Here’s how to put upsells inside a slide-out cart on a real Shopify store and test the whole experience as a shopper.
Read the guideHow to create Buy One, Get One offers on Shopify
“Buy one, get one free” is one of the easiest offers for shoppers to understand. Here’s how to show BOGO offers on your product pages, add the free item to the cart in one click, and check that Shopify actually charges $0 for it.
Read the guideHow to add a sticky Add-to-Cart button on Shopify
On a phone, the Add to cart button disappears as soon as shoppers scroll to read reviews or the description. A sticky bar keeps it in reach. Here’s how to add one to your Shopify product pages and check it works.
Read the guideOne home for all your revenue apps.
Start with what your store needs today, then add more when you’re ready.
Get started for free