Word of mouth
Word of mouth

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

Trusted by high-growth companies
and millions of users

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


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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.

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

Sven Lackinger, CEO

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

Veronika Riederle, CEO

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

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, Business Angel & VP Sales

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

Customer Stories

Discover how other businesses use Cello to boost their referral program

A frictionless sharing experience, perfectly integrated into your product with conversion rates of +50%

Read customer success stories
Gabriel Kaufmann SevDesk

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.


How to get started with B2B Referral programs?

Interested in growing word-of-mouth but unsure where to start? Check out our step-by-step referral program best-practices guide we crafted with Kyle Poyar (Open View)

Read your guide to B2B referrals
Header Image Kyle Poyar

Let the results speak for themselves

High performer on G2 and Capterra