Apollo.io review

What users like

• Costs a fraction of ZoomInfo, and users who weigh price against quality call the data good enough for the money^{[1][2][3][4][5]}
• Several users who had both Apollo and ZoomInfo preferred Apollo overall^[1][2][3]
• Database, sequencing and dialing live in one tool, which users find simple for early-stage or low-volume outbound^[1][2][3]
• Works without major issues for some users, particularly when targeting the US^[1][2][3]

What users complain about

• Stale records: users find people who left months or years ago (one found a contact who died 20 years earlier still listed), with bounce rates around 9% even after running lists through a verifier^{[1][2][3][4][5]}
• Phone numbers are a weak spot: inactive, wrong-person or HQ switchboard numbers returned instead of no result, and one user reports half the numbers were unreliable^[1][2][3][4]
• Costs have crept up: a long-time customer's renewal tripled after a credit system change, and others say enrichment is expensive for what it returns^[1][2][3]
• Coverage thins outside the US and in some niches: it lost to ZoomInfo and Cognism in one team's US and EMEA test, and a health tech team found it missed many people after leaving ZoomInfo^[1][2][3]
• The app can feel slow, clunky and complicated, and one user says it fragments work across contact, sequence and notes views^[1][2][3]

Best for

• Budget-conscious teams prospecting into the US
• Small teams that want data and sequencing in one tool
• Building large lists that will be verified separately

Skip it if

• Teams that need reliable direct dials for cold calling
• Senders who cannot run a separate verification step
• Prospecting outside the US or in niche verticals