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2Checkout Customer Success Stories
Mondly Languages - Language Learning Tools & Experiences
Revenue Uplift through Upgraded Cart and Affiliate Marketing
Patxi Gadanon, Audience Engagement Team Lead, Mondly

"We partnered with 2Checkout because we needed a payment platform that could support our global business while helping us continuously improve the checkout experience. 2Checkout gave us both: solid payment infrastructure and a team genuinely invested in optimization.
Like most subscription businesses, we were looking for ways to reduce checkout friction, improve conversion rates, and better understand where customers were dropping off in the purchase journey. Collaborating on A/B testing and cart improvements has helped us make data-driven decisions and improve conversion. The team consistently brings new ideas and insights, so it feels like an ongoing partnership rather than a one-off project. What we value most is the collaborative approach. Everyone has been proactive, responsive, and genuinely invested in our results. It feels more like working with a partner than a vendor.", Patxi Gadanon, Audience Engagement Team Lead, Mondly.About Mondly Languages
As part of Pearson, the world’s leading learning company, Mondly is one of the world's most popular language learning platforms, with over 150 million users across 190 countries. The app offers courses in 41 languages and is the first-ever to make language learning with speech recognition possible in virtual and augmented reality. Mondly was named "Best New App" by Apple, "App of the Year" by Facebook, and is consistently ranked among the top educational apps globally.
Find out more about Mondly Languages on: www.mondly.com.
Project: Mondly Boosts Cart Conversions with 2Checkout’s ConvertPlus
Context
Mondly's goal was to offer shoppers a faster, more modern checkout experience while driving measurable conversion and revenue growth. The solution: migrate from the Legacy 3-column checkout to ConvertPlus, 2Checkout's latest single-page checkout technology. To validate the business case, a controlled A/B test was run comparing the existing Legacy layout against a custom-built ConvertPlus 2-column template designed around Mondly's brand.
Solution & Results
Custom ConvertPlus 2-column template, A/B tested against the Legacy checkout:
- +7.62% uplift in Conversion Rate;
- +12.96% uplift in Revenue per Visitor;
- 31x Return on Investment.
Project: Mondly Achieves Global Growth with Checkout Optimization and Exit Modal Implementation
Context
The primary goal was to improve the checkout conversion rate and increase revenue. To achieve this, different cart layouts were tested across key markets, including the U.S. and Germany. Additionally, an exit modal strategy was implemented to capture potentially lost sales by offering a 10% discount to users about to leave the checkout process.
Solution & Results
Optimized 3-column template with local implementation:
- 22.91% Annual Revenue Growth;
- 21.70% increase in global Conversion Rate;
10% discount Exit Pop-Up global implementation:
- 10.57% Annual Revenue Growth;
- 5.04% increase in Revenue Per Visitor;
Project: Mondly Increases Revenue Per Visitor by 13% with InLine Cart
Context
The learning platform was aiming to improve Revenue Per Visitor (RVP) and Conversion Rate (CR), among others. The Verifone CRO team recommended making the switch from their existing shopping cart to a one-step checkout experience, the InLine Cart.
Solution & Results
The InLine cart implementation run has shown improved performance in specific markets, at per country level, and generated a 13% boost in Revenue Per Visitor and up to 5% increase in Conversion Rate.
The team working on this project recommended a split implementation for a global strategy, meaning that the new template should be used depending on the country preferences and specificities to maximize overall performance.
Project: Mondly Grows Affiliate Sales to 90% of Business During Avangate Affiliate Sales Wars Contest
Context and Objectives
A very ambitious startup aiming to scale fast at global level, Mondly was looking for a way to increase sales through partners and affiliates.
Solution & Results
2Checkout’s Avangate Affiliate Network provided a global affiliate network, powerful affiliate management tools, a great affiliate portal and special incentives to help affiliates promote Mondly products Mondly grew its revenue two-fold MoM by boosting affiliate sales to more than 90% of overall sales.