
Quick answer: customer retention software for SaaS falls into four groups, and the best choice depends on where you lose customers. For account-level retention run by a customer success team, look at Gainsight, ChurnZero, Vitally or Planhat, all priced by quote. For users who drift away inside the product, Userpilot (from $299 a month), Appcues and PLG OS (our own product, from $49 a month) add in-app guidance and surveys. For lifecycle messages, Customer.io starts at $100 a month. For cancellations and failed payments, Churnkey starts at $250 a month. Prices are as of November 2026, checked on each vendor's own site.
Retention software helps you notice that a customer is at risk and act before they leave. Most churn has one of a few causes, and each tool group addresses a different one:
Measure before you buy. Our guide to customer retention metrics shows what to track, so you can see which of the four groups is your real problem. If you already know you need a churn-focused shortlist, see our older comparison of churn management software.
| Tool | Group | Best for | Pricing (as of November 2026) |
|---|---|---|---|
| Gainsight | Customer success | Large CS teams with renewal programs | By demo |
| ChurnZero | Customer success | B2B CS teams wanting AI agents | By demo |
| Vitally | Customer success | PLG and tech-touch CS models | Request pricing, three plans |
| Planhat | Customer success and CRM | Teams combining CS and account management | By enquiry |
| Userpilot | In-app engagement | Product teams wanting analytics and guides together | Starter $299/mo; Growth from $849/mo |
| Appcues | In-app engagement | Teams publishing in-app messages and guides | By MAU, via a call |
| PLG OS (ours) | In-app components | Small SaaS teams adding surveys, help and rewards | Free tier; Starter $49/mo; Growth $149/mo |
| Customer.io | Lifecycle messaging | Behavior-triggered email, push and in-app | Essentials from $100/mo; Premium from $1,000/mo |
| Churnkey | Cancel and payment recovery | Subscription businesses with billing churn | From $250/mo under $5k monthly churn |
Who it is for: larger B2B companies with a dedicated customer success team and a formal renewal process.
Pricing: Gainsight's pricing page routes to a demo and showed no dollar prices when we checked.
Strengths: Gainsight positions itself as a retention platform covering customer health, churn risk detection, renewals and journeys, with AI agents and a service that runs renewals for long-tail accounts. Its product family also includes Staircase AI and the Skilljar customer education product.
Limits: built for teams with the staff and data to run it, so it is more than an early-stage product needs. If it is on your shortlist, compare it with our list of Gainsight alternatives.
Who it is for: B2B subscription companies whose CS team wants AI help prioritizing accounts.
Pricing: no public price page was available when we checked, so plan on a demo.
Strengths: ChurnZero centers on AI agents and an assistant called Kit, which answers questions about accounts and can build segments and automated plays. It covers customer health, upcoming renewals and expansion, with a ChurnScore for each account and playbooks for tasks such as business reviews.
Limits: its focus is the CS team's work, not the in-product experience that end users see.
Who it is for: customer success teams at product-led or usage-driven companies.
Pricing: Vitally has three plans, Tech-Touch, Hybrid-Touch and High-Touch, each by request. All include core features, unlimited automations, unlimited observer seats, single sign-on and the full integration library.
Strengths: dynamic health scores by lifecycle stage or segment, playbooks that automate tasks such as CSM assignment, and an AI assistant called Quin that draws on customer history, product usage and conversations. The Tech-Touch plan is aimed at one-to-many and PLG customer success.
Limits: no public prices, and its value depends on feeding it good product usage data.
Who it is for: companies that want customer success and account management in one customer system.
Pricing: Planhat's pricing page lists CRM, CSP and PSA packages and asks you to enquire.
Strengths: Planhat describes itself as a new generation of CRM, with a customer agent called Pi that uses conversations, tickets, product usage, sales and revenue data across your systems, and one view of every customer.
Limits: adopting it as a CRM is a larger decision than adding a retention tool.
Who it is for: product and growth teams that want in-app guidance and product analytics in one tool.
Pricing: Userpilot lists Starter at $299 a month for up to 2,000 monthly active users, Growth from $849 a month and a custom Enterprise plan.
Strengths: Starter includes in-app engagement, user segmentation, usage trends and NPS surveys. Growth adds advanced product analytics, event autocapture, a resource center, advanced in-app surveys, 100k emails and 5k session replays a month. Mobile engagement is on Enterprise.
Limits: the entry price is high for a very small product, and mobile sits on the top plan. Our list of Userpilot alternatives has cheaper options.
Who it is for: teams that want to publish in-app messages, surveys, offers and guides.
Pricing: Appcues prices by monthly active users, installations and published experiences. Start covers up to 3,000 MAUs with 10 published experiences, Grow starts at 3,000 MAUs with 25, and Enterprise is custom with 100. Prices come through a call, and there is a free trial with no card.
Strengths: every plan includes every experience type, feature and integration, so you do not lose capabilities on the smaller tier.
Limits: it needs a sales call to get a price, and a cap on published experiences applies to each plan.
Who it is for: small SaaS teams that want ready-made in-app retention components. This is our own product, so weigh that when you read this section.
Pricing: PLG OS has a free tier with 100 MTUs and 1 component, Starter at $49 a month with 1,000 MTUs and 2 components, Growth at $149 a month with 3,000 MTUs and 5 components, and a custom Scale plan.
Strengths: the component library marks these for retention: Help Hub, feedback workflow, onboarding and feature usage surveys, Net Promoter Score, streaks, badges, leaderboard, spin the wheel, scratch card, alerts and modals.
Limits: it is not a customer success platform. Its pages do not list account health scoring or renewal management, and component counts are capped by plan.
Who it is for: teams that want behavior-triggered lifecycle messaging driven by product data.
Pricing: Customer.io Essentials starts at $100 a month, Premium starts at $1,000 a month billed yearly, and Enterprise is custom. Extra email is $0.12 per 1,000. Early-stage companies that have raised under $10M can apply for a free year through its startup program.
Strengths: a visual workflow builder, an AI agent with execution skills, and unlimited push and in-app messages listed across plans.
Limits: it sends messages rather than diagnosing accounts, so it needs clean event data and someone who owns the campaigns.
Who it is for: subscription businesses losing revenue at the cancel button or to failed payments.
Pricing: Churnkey prices by monthly churned revenue: $250 a month for teams with under $5k a month of churn volume, with a 14-day trial. Core and Intelligence are for teams with $10k or more in monthly churn, and Intelligence is by quote.
Strengths: in-app cancel flows and payment recovery on the entry plan. Core adds A/B testing, segmentation and precision retries, and Intelligence adds adaptive offers and AI feedback analysis. An open-source SDK is free on every plan.
Limits: it acts at the end of the customer journey. It cannot fix a customer who never adopted the product. For ideas on the flow itself, see our cancellation flow examples.
Start with who will run it. If you have CSMs managing named accounts, a customer success platform helps only when someone acts on its signals every week. If you have no CS team and thousands of self-serve users, in-app and lifecycle tools fit better, since they work without a person in the loop.
Next, look at where accounts actually leave. Cancellations soon after signup often point to onboarding, so strengthen your first-session flow and bring in data quickly with a tool from our Flatfile alternatives list if imports are a blocker. Exits at renewal point to customer success, and exits at billing point to a tool like Churnkey.
Finally, buy one group at a time. Pick the tool that addresses your largest cause of churn, run it for a full renewal cycle, and only then add another. Our guide to retention strategies for SaaS has tactics to pair with whichever tool you choose.
It is software that helps a business keep existing customers by spotting churn risk and acting on it. In SaaS, that covers customer success platforms, in-app engagement tools, lifecycle messaging and cancel or payment recovery tools.
Small teams without a customer success function usually get more from in-app and lifecycle tools. PLG OS has a free tier and starts at $49 a month, Customer.io starts at $100 a month, and Churnkey starts at $250 a month if billing churn is the main issue.
They overlap. Churn management usually means detecting and saving at-risk accounts, while retention software is the wider set of tools that also build habits and value inside the product, before anyone is at risk.
Some do. Userpilot, Customer.io, Churnkey and PLG OS publish entry prices. Gainsight, ChurnZero, Vitally, Planhat and Appcues share pricing through a demo or a request.