# What pairs well with PromoteKit > PromoteKit is a referrals tool, and a team running it still has 6 neighbouring categories to staff. The pick in each is Polar for subscription billing, beehiiv for email service providers, Lovable for landing page builders, HockeyStack for GTM analytics, Senja for testimonials & social proof and Collabstr for influencer & creator marketing, each the leading tool in that category on published criteria. - Profile: https://saastracker.org/products/promotekit - Category: Affiliate & Referral Programs (https://saastracker.org/categories/affiliate-referral) - Web version: https://saastracker.org/products/promotekit/stack ## The stack, category by category | Category | Ideal pairing | Because | Benefit | | --- | --- | --- | --- | | Subscription Billing | [Polar](https://saastracker.org/products/polar) (Momentum) | PromoteKit sends buyers elsewhere for the platform to run payouts as a service or handle US. Polar adds only merchant of record with genuinely first-class usage-based billing. | Recurring revenue bills, retries and reconciles itself, including the tax nobody wants to calculate. | | Email Service Providers | [beehiiv](https://saastracker.org/products/beehiiv) (Momentum) | PromoteKit is built for referrals, not ESPs. beehiiv adds monetization depth no ESP rival. | An opt-in audience is owned rather than rented, and reaching it costs nothing per send. | | Landing Page Builders | [Lovable](https://saastracker.org/products/lovable) (Momentum) | PromoteKit lists no affiliate marketplace or partner discovery among its limits. Lovable adds unlimited team members on every plan including free. | A campaign page ships the same afternoon without waiting on an engineer. | | GTM Analytics | [HockeyStack](https://saastracker.org/products/hockeystack) (Momentum) | PromoteKit is built for referrals, not analytics. HockeyStack adds odin and Nova. | Spend gets attributed to revenue, so the channel that works is the one that gets funded. | | Testimonials & Social Proof | [Senja](https://saastracker.org/products/senja) (Momentum) | PromoteKit lists payouts are calculated but not executed as a service among its limits. Senja adds imports from around 30 platforms plus a Chrome extension. | Real customer proof sits on the pages where people decide, not only on a review site. | | Influencer & Creator Marketing | [Collabstr](https://saastracker.org/products/collabstr) (Ease of Use) | PromoteKit lists the Enterprise gate at roughly $10,000 of monthly affiliate revenue means among its limits. Collabstr adds you can hire for real on the free plan. | Creators get found, briefed and paid on performance, rather than on a flat fee and hope. | ### Polar for Subscription Billing PromoteKit sends buyers elsewhere for the platform to run payouts as a service or handle US. Polar adds only merchant of record with genuinely first-class usage-based billing. Recurring revenue bills, retries and reconciles itself, including the tax nobody wants to calculate. A startup program giving qualifying early-stage AI companies twelve months of the Scale plan free, worth $4,800 and dropping them straight to 3.4 percent plus 30 cents. Paddle holds Category Leader here, and is worth weighing if that is closer to the problem PromoteKit leaves open. ### beehiiv for Email Service Providers PromoteKit is built for referrals, not ESPs. beehiiv adds monetization depth no ESP rival. An opt-in audience is owned rather than rented, and reaching it costs nothing per send. Growth mechanics are first-party features, productized from the Morning Brew playbook by the people who built it. Mailchimp holds Category Leader here, and is worth weighing if that is closer to the problem PromoteKit leaves open. ### Lovable for Landing Page Builders PromoteKit lists no affiliate marketplace or partner discovery among its limits. Lovable adds unlimited team members on every plan including free. A campaign page ships the same afternoon without waiting on an engineer. Speed is genuinely different in kind, not degree. A working marketing site with a functioning backend in an afternoon is not something a canvas builder can match. Unbounce holds Category Leader here, and is worth weighing if that is closer to the problem PromoteKit leaves open. ### HockeyStack for GTM Analytics PromoteKit is built for referrals, not analytics. HockeyStack adds odin and Nova. Spend gets attributed to revenue, so the channel that works is the one that gets funded. No-code report builder lets marketing self-serve custom dashboards instead of queueing behind analysts. Google Analytics 4 holds Category Leader here, and is worth weighing if that is closer to the problem PromoteKit leaves open. ### Senja for Testimonials & Social Proof PromoteKit lists payouts are calculated but not executed as a service among its limits. Senja adds imports from around 30 platforms plus a Chrome extension. Real customer proof sits on the pages where people decide, not only on a review site. The free tier is a real product: unlimited widgets, unlimited walls, imports, reels, and analytics, capped only at 15 testimonials, which lets you prove value before spending anything. Trustpilot holds Category Leader here, and is worth weighing if that is closer to the problem PromoteKit leaves open. ### Collabstr for Influencer & Creator Marketing PromoteKit lists the Enterprise gate at roughly $10,000 of monthly affiliate revenue means among its limits. Collabstr adds you can hire for real on the free plan. Creators get found, briefed and paid on performance, rather than on a flat fee and hope. Published creator pricing removes the rate negotiation that stalls most first influencer campaigns, and makes budgeting possible before any conversation happens. ## FAQ ### What is the best stack to run with PromoteKit? PromoteKit is a referrals tool, and a team running it still has 6 neighbouring categories to staff. The pick in each is Polar for subscription billing, beehiiv for email service providers, Lovable for landing page builders, HockeyStack for GTM analytics, Senja for testimonials & social proof and Collabstr for influencer & creator marketing, each the leading tool in that category on published criteria. ### What do I pair with PromoteKit for Subscription Billing? Polar. PromoteKit sends buyers elsewhere for the platform to run payouts as a service or handle US. Polar adds only merchant of record with genuinely first-class usage-based billing. Recurring revenue bills, retries and reconciles itself, including the tax nobody wants to calculate. ### How many tools do I need alongside PromoteKit? PromoteKit sits next to 6 other categories in a working referrals stack, and its own profile names the gap each one fills. Most teams staff the first two or three and add the rest as the motion grows. ### Is Collabstr worth adding alongside PromoteKit? PromoteKit lists the Enterprise gate at roughly $10,000 of monthly affiliate revenue means among its limits. Collabstr adds you can hire for real on the free plan. Creators get found, briefed and paid on performance, rather than on a flat fee and hope. --- Source: SaaSTracker (https://saastracker.org), an independent editorial project. Pairings are the leading tool in each complementary category, chosen on published criteria: https://saastracker.org/methodology. Placement cannot be purchased.