Plain-English glossary

The words behind the software you buy

Every term you bump into while comparing tools, defined in one clear sentence or two. No acronyms left hanging, no marketing spin.

28
Terms defined
Pricing

Annual Discount

A lower effective price for paying a year up front instead of monthly. Most tools offer roughly two months free for committing annually.

Metrics

Annual Recurring Revenue

ARR

The predictable revenue a subscription business expects over a year. It is monthly recurring revenue multiplied by twelve, and it is the number investors care about most.

Product

Application Programming Interface

API

A defined way for two pieces of software to talk to each other. A good API lets you connect a tool to the rest of your stack.

SEO

Backlink

A link from one website to another. Search engines treat quality backlinks as votes of confidence, which makes them a core ranking signal.

See it in our Ahrefs review
Metrics

Churn Rate

The percentage of customers who cancel in a given period. Low churn is the quiet engine behind every healthy subscription product.

Metrics

Conversion Rate

The share of visitors who take the action you want, such as starting a trial or buying a plan. Small improvements here compound across an entire funnel.

Metrics

Customer Acquisition Cost

CAC

The average amount you spend on marketing and sales to win one paying customer. A healthy business earns far more from a customer than it spent to acquire them.

Sales

Customer Relationship Management

CRM

Software that stores every contact, conversation, and deal in one place so a team can sell without losing track. It is the memory of a sales team.

See it in our Pipedrive review
Email

Deliverability

The likelihood that an email lands in the inbox rather than spam. It depends on sender reputation, authentication, and how recipients engage with your mail.

See it in our Kit review
SEO

Domain Authority

A score that predicts how well a whole website can rank in search. It is built from the size and quality of a site's backlink profile.

Email

Drip Campaign

A series of emails sent automatically on a schedule or trigger, such as a welcome sequence. Drips nurture new subscribers without manual sending.

See it in our ActiveCampaign review
Metrics

Earnings Per Click

EPC

An affiliate metric showing the average commission earned for every click sent to a partner. It helps publishers compare offers fairly regardless of traffic size.

Pricing

Free Tier

A permanently free plan, distinct from a trial that expires. A genuine free tier lets you learn a tool before paying anything.

See it in our Notion review
Pricing

Freemium

A model that offers a useful free plan to attract users, then charges for advanced features or higher limits. The free tier is the top of the funnel.

Product

Integration

A ready-made connection between two tools that lets data flow without code. A rich integration library reduces the need to switch between apps.

See it in our Asana review
SEO

Keyword Difficulty

An estimate of how hard it is to rank on the first page for a given search term. Higher scores usually mean stronger, more established competitors.

See it in our Semrush review
Sales

Lead

A person or company that has shown interest in what you sell. Leads sit at the top of the sales pipeline before they become customers.

See it in our HubSpot CRM review
Metrics

Lifetime Value

LTV

The total revenue you expect from a single customer across the whole time they stay with you. Compared against CAC, it tells you if growth is sustainable.

Metrics

Monthly Recurring Revenue

MRR

The total predictable income a business earns from subscriptions in a single month. Tracking MRR shows whether a product is growing, flat, or shrinking.

SEO

On-Page SEO

Everything you control on a page to help it rank, including headings, content depth, internal links, and how well it answers the search intent.

See it in our Surfer SEO review
Product

Onboarding

The guided first experience that helps a new user reach value quickly. Strong onboarding is often the difference between a trial that sticks and one that lapses.

Email

Open Rate

The percentage of recipients who open an email. It is a rough signal of subject-line strength and list health, not a perfect measure of interest.

Pricing

Per-Seat Pricing

A pricing model that charges for each user, or seat, on the account. Costs scale directly with team size, which matters as you grow.

See it in our ClickUp review
Sales

Sales Pipeline

A visual map of every deal and the stage it has reached, from first contact to closed. A clear pipeline shows where revenue is likely to land.

See it in our Pipedrive review
SEO

Search Engine Results Page

SERP

The page of results a search engine returns for a query. Ranking higher on the SERP is the goal of almost every SEO effort.

See it in our Ahrefs review
Email

Segmentation

Splitting an audience into smaller groups based on behavior or traits so you can send more relevant messages. Relevance is what lifts engagement.

See it in our ActiveCampaign review
Product

Software as a Service

SaaS

Software you access over the internet and pay for by subscription, rather than installing and owning. Nearly every tool we review is SaaS.

Product

Webhook

An automatic message a tool sends to another service the moment an event happens, such as a new signup. Webhooks power real-time automation.

Came here from a review and still unsure which tool fits? Let our short quiz point you to a tested pick.

Build my stack