Word of mouth

Word of mouth

Turn users into your most valuable growth channel. Cello is the easiest way to add a P2P referral program to any SaaS product in hours.

    (We only need you E-mail… that’s it)


    Make sharing your product frictionless & rewarding

    Accelerate viral growth by providing a delightful sharing experience embedded inside your product. Get the ball rolling and your users will do the rest.

    Get started – it’s free

    The power of user-led growth


    dev time needed


    payback period from day one


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    avg. annual user-to-customer
    conversion rate

    How it works

    Setting up a referral program used to be messy—not anymore

    Seamless Integration in a snap

    Make sharing available inside your product fast and hassle-free. We do all the heavy lifting with billing, payouts, and administration.

    Simple frictionless sharing

    Multiple sharing options and auto-generated landing pages make it easy for your users to share in any channel.

    Flexible, automated rewards

    Integrates directly with Stripe and other payment providers—fully automated attribution & success-based payouts.

    Management and performance tools

    A powerful platform to track performance in real-time. It makes proving program ROI a breeze.

    Integrates with your existing tools

    A secure, enterprise-ready platform that integrates with your CRM and RevOps tools.

    Don’t just take our
    word for it

    Hear from our delighted customers about their experience using Cello.

    Customer referrals have always worked great for us. We tried to self-build a referral tool, but it proved too expensive to build and operate. Cello can solve all that out-of-the-box.

    Oliver Manojlovic, VP Sales

    We introduced a new, high LTV/CAC channel with none of the billing headaches we had expected to have to deal with.

    Veronika Riederle, CEO

    Cello made it easy to introduce an additional high ROI, scalable source of topline revenue.

    Sven Lackinger, CEO

    Super fast and easy it is to set it up. Really straightforward to access data and insights, and implement changes to improve the metrics. Also super helpful, kind, and experienced team. A real joy to work with them.

    Raphael Allstadt, Co-Founder & CEO

    The fastest-growing software companies are built on strong word-of-mouth. Cello makes this critical growth driver now accessible to all products.

    Marek Dawidowicz, Director Growth

    How tl;dv went from idea to 550+ monthly referral signups in record time

    tl;dv, an AI-powered meeting recorder, integrated and launched its Cello-powered user referral program within a few days, growing the channel to hundreds of monthly signups soon after.

    Read how they did it

    Frequently asked questions

    Everything about Cello, from programs to channels and pricing.

    How does your pricing work?

    We’ve designed the pricing to be entirely success-based. You only pay us when your program is generating revenue. Our free tier gives you a low-friction way to launch and validate whether user referrals work for your business.

    Can you talk more about user rewards?

    Rewards are designed to be customisable for your individual business needs. We recommend recurring rewards calculated as a % of MRR generated from users they’ve referred. Rewards can be capped by setting a maximum reward limit per referral. Users receive payouts directly to their PayPal or Venmo accounts. Reward options such as gift cards, donations, and product rewards (e.g., discounts) are coming soon.

    What languages and geos are supported?

    We support rewarding users in Austria, Belgium, Brazil, Canada, Czechia, Denmark, Finland, France, Germany, Greece, Hungary, Ireland, Italy, India, Netherlands, Norway, Poland, Philippines, Portugal, Romania, Spain, Sweden, Switzerland, United Kingdom, United States. Cello’s referral experience supports localization for users. We provide English, German, Norwegian, Spanish, French, and Dutch by default, and Cello will help you add additional languages on request.

    How do you deal with compliance, legal, and security?

    Your privacy and that of your users is our top priority. We offer DPAs with all our plans and are GDPR-compliant with servers based in the EU. We collaborate with data protection as a service provider to comply with international regulations for data protection.

    Your guide to B2B referrals

    Interested in growing word-of-mouth but unsure where to start? We collaborated with Kyle Poyer (Growth Unhinged/OpenView) to create the most comprehensive, step-by-step guide to B2B user referrals. Everything you need to make user referrals a cost-efficient growth channel.

    Read here →