Seamless.AI vs Apollo.io
A detailed comparison to help you choose between Seamless.AI and Apollo.io.
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Verdict: Apollo.io wins
Apollo.io scores 4.2/5, edging out Seamless.AI at 3.1/5. SDR and founder-led outbound teams that want one subscription for B2B contact data plus sequencing and calling, and are willing to manage a credit budget.
Seamless.AI AI-powered B2B contact database | Apollo.io AI-powered B2B prospecting and outreach | |
|---|---|---|
| Rating | 3.1 (1 review) | 4.2 (1 review) |
| Pricing Model | freemium | freemium |
| Starting Price | Free tier available | Free tier available |
| Best For | US-focused SMB sales teams running outbound at volume who want emails and direct dials from one credit and can verify data quality on their own list before signing an annual contract. | SDR and founder-led outbound teams that want one subscription for B2B contact data plus sequencing and calling, and are willing to manage a credit budget. |
| Free Tier | ||
| API Access | ||
| Team Features | ||
| Open Source | ||
| Tags | free tierbrowser extensionapi access | free tierteam features |
| Visit Seamless.AI → | Visit Apollo.io → |
Seamless.AI
Pros
- + One credit returns both email and a phone number — the flat credit model beats the 5:1 and 10:1 phone ratios of Lusha and LeadIQ in my comparison
- + Free plan with 50 credits and no credit card is the easiest trial entry in the B2B data category (seamless.ai pricing page, captured September 2026)
- + Chrome extension pulls contacts while browsing LinkedIn Sales Navigator and company pages
- + Universal Credits pool across a team since June 2026, with admin-set per-user limits
- + G2 rating of 4.4 across 5,277+ reviews shows a large, genuinely satisfied user base for US outbound
Cons
- - Reported 20-30% of records inaccurate or outdated on G2; credits are spent even when the research returns a bounce
- - No published price for any paid plan — Pro and Enterprise route to sales and every third-party price is an estimate
- - Trustpilot sits at roughly 1.4/5 on billing disputes and auto-renewal friction; terms renew 12 months unless changed 60 days before renewal
- - GDPR concerns for EU/UK prospecting and a March 2025 LinkedIn restriction on its tooling
- - Buyer Intent, AI Assistant, Autopilot and Data Enrichment are paid add-ons on top of the subscription
Apollo.io
Pros
- + Free tier is genuinely functional — I built filtered searches, pulled verified emails and ran a short sequence before hitting any paywall
- + Database, sequences, dialer and deliverability tooling in one seat price replaces two or three subscriptions for a small team
- + Credit grants are generous at the Professional tier (48,000 credits per seat per year at time of writing, per apollo.io/pricing)
- + Waterfall enrichment and AI lead scoring surfaced active accounts my manual filters had missed in my test run
- + Pricing is published and self-serve through Organization tier — no forced sales call to start
Cons
- - Three separate meters (seat credits, mobile credits, enrichment credits) make real cost hard to forecast — my export credits drained fastest on direct dials
- - Data quality thins out outside US tech: stale titles and re-routed inboxes on older and smaller-company records in my sample
- - Licensing forbids reselling or powering external products with Apollo data without a custom agreement
- - Call coaching is shallow versus dedicated conversation intelligence tools; call recording is metered (4,000 AI-insight minutes at Professional)
- - Buying intent is capped (6 topics at Professional) and intent data is a paid-tier feature only
Frequently Asked Questions
Which is better, Seamless.AI or Apollo.io?▼
Apollo.io scores higher at 4.2/5 vs 3.1/5 for Seamless.AI, making it the better-rated option in our comparison.
What is the difference between Seamless.AI and Apollo.io?▼
Seamless.AI: Seamless.AI is a B2B sales prospecting platform that finds and verifies business contacts, emails and direct dial numbers. Apollo.io: Apollo.io combines a B2B contact database with sequencing, dialling and deal tracking for go-to-market teams.
Is Seamless.AI or Apollo.io more affordable?▼
Seamless.AI starts at €0/mo, Apollo.io starts at €0/mo. Check the comparison table above for current pricing.
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