Harmonic Review: Tracking Companies Before They Are Obvious
Harmonic fits teams that track startups through hiring and funding signalsIn this Harmonic review, no plan publishes a price, read on Oct 3, 2026, and no tagged review counts back its 7.7 score.
Every score on this page validated by the site owner · latest validation Oct 16, 2026 · How we score
Harmonic in three sentences
This Harmonic review covers harmonic.ai, the startup data platform, not the video-hardware company of the same name. It lists 40M companies, 200M people and 250K investors on its pricing page, read on Oct 3, 2026. No tagged review counts exist for it, so this page states the vendor's facts and sets no sentiment claim.
See it before you read on
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What it costs
Three plans. Every figure read on the vendor's pricing page on Sep 26, 2026.
Pricing page read: Console access, API access and Bulk data show Get pricing and no figure.
Scores set with no tagged review counts; global score 7.7.
What you get, what you don't
Six things Harmonic does. None of the six is missing on the vendor's pages.
- AffinityNative
- SlackNative
- ZapierNative
- PolytomicNative
- n8nNative
- Data hostedNot published
- GDPR data processing agreementNot published
- SOC 2 reportCompliant (Type II)
- Single sign-onAvailable
- ChannelsChat, email
- HoursNot published
- PhoneNot published
- Tagged reviewsNone discuss support
The data behind the score
Our five scores against the average of the tools we score.
Should you buy it?
Name your dealbreaker. No profile is scored on its own yet: too few tagged reviews per profile, so the page shows the overall score.
Buy it if You want to follow 40M companies through hiring and funding signals, with Scout alerts and a weekly bulk feed. Skip it if You need a published price, or a refund right that is not left to the vendor's discretion.
No plan shows a price Console access, API access and Bulk data each show Get pricing and no figure, read on Oct 3, 2026. We hold no published fact that shows another tool here does better.
Refunds are left to the vendor's discretion The terms state refunds are issued only at Harmonic's discretion or if legally required, read on Sep 26, 2026. Tomba covers it
CRM sync is sold as an add-on A no-code CRM sync is listed as an add-on on API access, read on Oct 3, 2026; native integrations are Affinity, Slack and Polytomic. Zeliq covers it
Questions to ask the vendor
- What does each plan cost, and is there a minimum term?Console access, API access and Bulk data each show Get pricing and no figure, read on Oct 3, 2026.
- What does the CRM sync add-on cost, and which tier carries it?A no-code CRM sync is listed as an add-on on API access, read on Oct 3, 2026.
- Can a refund be requested outside the vendor's discretion?Refunds are issued only at Harmonic's discretion or if legally required, read on Sep 26, 2026.
- How often is data refreshed outside the Bulk data plan?Bulk data lists a weekly refresh, read on Sep 27, 2026; this page holds no refresh rate for the other plans.
If Harmonic isn't it
Three tools we score in this category. Each card names where the tool is weaker. The highest-scored tool that covers a dealbreaker above is always among them. Price on request has no card: we hold no published fact that shows another tool here does better. Click a card, or a name below, to put it next to Harmonic.
- HubSpot sync included in the Starter plan
- Speed and performance draws 4 negative mentions in its reviews
- 14-day money-back guarantee on a first subscription
- Free plan and trial draws 3 negative mentions in its reviews
- Email Finder, Domain Search and Email Verifier in one product
- Price level draws 18 negative mentions in its reviews
Harmonic vs Zeliqthe three alternatives
 Harmonic |
Zeliq |
Tomba |
Hunter |
|
|---|---|---|---|---|
| Our score | 7.7* | 8.6 | 8.6 | 8.5 |
| Price and plan | ||||
| Entry price | Quote | $59 /seat /mo | $89 /mo | $49 /mo |
| Free plan | No free plan stated | Free plan | Free plan | Free plan |
| Free trial | No free trial stated | 14-day free trial | No free trial stated | No free trial |
| Four dimensions, same grid | ||||
| Ease of setup | 8.4 | 8.1 | 9.3 | 9.3 |
| Feature depth | 7.5 | 8.2 | 8.6 | 7.5 |
| Value for money | 8.3 | 9.2 | 7.6 | 7.8 |
| Support quality | 7.3 | 8.6 | 7.9 | 9.1 |
| Fit | ||||
| Integrations | Affinity, Slack, Zapier | HubSpot, Salesforce, Pipedrive | HubSpot, Pipedrive, Airtable | HubSpot, Salesforce, Pipedrive |
| Support channels | Chat, email | Email and chatbot | Chat, email | Chat, email |
| Main strength | Company and people database | Multi-provider contact enrichment | Email finder with verification | Email finder and domain search |
Zeliq lists an AI prospecting agent and automated lead scoring, read on Oct 3, 2026.
Tomba lists AI company search from a plain-language description, read on Oct 3, 2026.
Hunter lists Sequences and Signals as features, read on Oct 3, 2026.
Prices read on Oct 3, 2026: Harmonic shows none; Zeliq Starter $59 per user a month; Tomba Growth $89 a month; Hunter Starter $49 a month.
Same five-dimension grid for every tool; the fifth dimension changes with the category and stays out of this table. Prices and integrations read on each vendor's public pages between Sep 26 and Oct 3, 2026. * Under 10 tagged reviews: the score is weighted toward the site average; with none, it is the site average. Some of these prices have not been read again for 6 months. Check the vendors' pages before you buy.
What the vendor's pages say, in depth
The database lists 40M companies, 200M people and 250K investors
The pricing page lists 40M companies, 200M people and 250K investors, read on Oct 3, 2026. The vendor describes tracking companies and people as they grow, hire, fundraise and launch products, read on Sep 26, 2026.
The Bulk data plan lists data refreshed weekly and delivered to S3, BigQuery or Snowflake, read on Sep 27, 2026. This page holds no accuracy figure for the data, and no tagged review counts to draw one from.
Scouts run recurring searches and alert when a trigger fires
The vendor lists scheduled AI agents, called Scouts, that run recurring searches and alert on triggers, read on Sep 27, 2026. Slack is a native integration for pushing alerts, read on Oct 3, 2026.
A Chrome extension shows company and team data on a company's website and on third-party profile pages, read on Sep 26, 2026. Network mapping is listed on the pricing page, read on Oct 3, 2026.
Console access, API access and Bulk data each say Get pricing
Console access, API access and Bulk data each show a Get pricing button and no figure on the pricing page, read on Oct 3, 2026. This page holds no minimum term or contract length for any of them.
Full MCP access for agents or LLMs is listed on API access, read on Sep 26, 2026, and a no-code CRM sync is an add-on on that tier, read on Oct 3, 2026.
SOC 2 Type II and ISO 27001 sit beside chat and email support
The pricing page lists SOC 2 Type II compliance and ISO 27001 certification, read on Sep 26, 2026. Single sign-on is available, read on Oct 3, 2026.
Support is reached by chat or email, read on Oct 3, 2026. This page holds no data hosting location and no data processing addendum for Harmonic.
Before you commit
Harmonic publishes no price: Console access, API access and Bulk data each show Get pricing, read on Oct 3, 2026. This page holds no annual minimum or contract length, and no tagged review counts to draw a price complaint from.
The Bulk data plan lists data refreshed weekly and delivered to S3, BigQuery or Snowflake, read on Sep 27, 2026. This page holds no refresh rate for the other plans, and no comparison with older databases.
The vendor lists investors, corporate development and GTM teams as its audiences, read on Oct 3, 2026, and describes tracking startup hiring and funding signals for sales, read on Oct 3, 2026. This page holds no fact on recruiting teams, so it makes no claim on them.
The vendor lists a no-code CRM sync as an add-on, an Affinity integration and Zapier and n8n automations, read between Sep 26 and Oct 3, 2026. This page holds no fact that Harmonic stores deals or pipeline, so it makes no claim that it replaces a CRM.
The vendor lists Scouts as scheduled AI agents that run recurring searches and alert on triggers, read on Sep 27, 2026. This page holds no test against a saved search, so it makes no claim on which finds more.
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