Apollo vs SignalHire

Apollo is a data intelligence and sales engagement platform for go-to-market teams. It describes a prospecting database with more than 240 million contacts and 30 million accounts, alongside email sequencing, automated outreach, dialing, call recording and pipeline tools. Apollo’s agents can research accounts, prioritize leads, write outreach, follow up and book meetings. The platform lists more than 200 integrations, including Salesforce, HubSpot, Outreach, SalesLoft, Marketo, Sendgrid, LinkedIn and major email providers. Its free Chrome extension provides contact and account insights, email finding and dialing, and can add prospects to lists or sequences. The Free plan is free and includes 900 credits per seat per year, granted monthly, two sequences, API access and one intent topic. Basic costs $49 a month billed annually, with 30,000 credits per seat per year granted upfront, email sequencing and core integrations. Trial credits and features are subject to limits; unused credits expire at the end of each billing cycle.

SignalHire is a contact search and enrichment service for recruiters, sales professionals, and marketers. It provides professional email addresses and phone numbers, including direct-dial data, and lets users filter profiles by name, title, company, and location. Its database page describes more than 900 million professional profiles and more than 30 million companies. Users can enrich up to 1,000 profiles at a time, and SignalHire says it checks emails with third-party verification tools before displaying contact details. The service also offers multi-step email sequences with tracking, reply pauses, send windows, and analytics, using Outlook/Microsoft 365 or a company-domain mailbox. Its API has Person and Search endpoints; Company API access is available on request through support. The browser extension can find contact details on social and professional sites, with downloads linked for Chrome, Firefox, Edge, and Opera. Integrations include ATS and CRM tools such as Salesforce, HubSpot, Zoho Recruit, Pipedrive, Recruitee, and Ashby. The Free plan is free and provides 5 credits; installing the extension provides 10 free credits each month. The listed monthly paid plans are $69 a month.