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Software · head to head

Apollo.io vs ClickHouse

Apollo.io logo

Apollo.io

Software

Revenue intelligence platform

From
Free
Rated
-
Full reviewWebsite
ClickHouse logo

ClickHouse

Software

Fast open-source column-oriented database for real-time analytics

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Apollo.io everything is metered in credits, and the free Starter plan runs on them too, so prospecting volume is capped rather than the feature set; ClickHouse limited multi-row atomic transactions and expensive UPDATE/DELETE operations unsuitable for transactional systems
  • They diverge on capability: Apollo.io covers Contact database, ClickHouse covers Column-oriented Storage.

Where they differ

Only the attributes on which Apollo.io and ClickHouse actually diverge.

Attributes where Apollo.io and ClickHouse differ
AttributeApollo.ioClickHouse
Pricing modelsubscriptionUnknown
PlatformsWebLinux, macOS, Windows (via Docker)
Founded20202021

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated), category (Unknown).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Apollo.io

  • Contact database
  • Email finder
  • Lead search
  • Automation
  • Engagement tracking
  • Reporting
  • Salesforce
  • HubSpot

Only in ClickHouse

  • Column-oriented Storage
  • Real-time Analytics
  • SQL Support
  • Linear Scalability
  • Data Compression
  • Vectorized Query Execution
  • Approximate Calculations
  • Kafka

Both cover

  • Web support

What people use each for

The jobs each tool is most often brought in to do.

Apollo.io

  • Lead generationnot ClickHouse
  • Prospect researchnot ClickHouse
  • Sales automationnot ClickHouse

ClickHouse

  • Business intelligencenot Apollo.io
  • Data warehousingnot Apollo.io
  • Real-time analyticsnot Apollo.io
  • Reportingnot Apollo.io
  • Machine learningnot Apollo.io

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Apollo.io

  • Everything is metered in credits, and the free Starter plan runs on them too, so prospecting volume is capped rather than the feature set
  • Plans described as unlimited are capped in the fair use policy at 10,000 credits a month for non-paying accounts
  • Connecting a mailbox that is not Gmail or Microsoft requires a paid plan
  • How many records can be selected at once varies by tier
  • Running out of credits means buying more rather than waiting for a reset

ClickHouse

  • Limited multi-row atomic transactions and expensive UPDATE/DELETE operations unsuitable for transactional systems
  • Requires upfront schema design discipline with MergeTree engine choices and sort/partition keys
  • Experimental vector search support, not production-ready for vector operations
  • Different query syntax from standard SQL requiring migration planning
  • Limited JOIN capabilities compared to traditional relational databases
  • Migration complexity with 2-4 weeks estimated for data type mapping and query translation

Pricing, plan by plan

Apollo.io

Free
  • FreeFree
    • Basic contact search
    • Limited searches
  • Starter$49/month
    • Everything in Free
    • Advanced search
    • Email finder
  • Professional$149/month
    • Everything in Starter
    • Automation
    • Advanced analytics

ClickHouse

Free

No published plan breakdown. See the ClickHouse review.

Which should you pick?

Choose Apollo.io if

  • You need contact database.
  • You want to start without paying.
  • You also want email finder.
Apollo.io review

Choose ClickHouse if

  • You need column-oriented storage.
  • You want to start without paying.
  • You work on Linux, macOS, Windows (via Docker).
  • You also want real-time analytics.
ClickHouse review

Questions people ask

Is Apollo.io or ClickHouse better?
Neither clearly leads. Apollo.io starts at Free and ClickHouse at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Apollo.io or ClickHouse?
Apollo.io starts at Free and ClickHouse at Free.
Does Apollo.io or ClickHouse run on more platforms?
Apollo.io runs on Web. ClickHouse runs on Linux, macOS, Windows (via Docker).
Can I use Apollo.io for free?
Both have a free tier, so you can try either at no cost before committing.
What is Apollo.io best used for?
Apollo.io is most often used for lead generation, prospect research, sales automation. Of those, lead generation and prospect research are not what ClickHouse is typically brought in for.
What can Apollo.io do that ClickHouse cannot?
Apollo.io covers Contact database, Email finder, Lead search, Automation. ClickHouse covers Column-oriented Storage, Real-time Analytics, SQL Support, Linear Scalability. Both handle Web support.

Answered from the vendors’ own pages

ClickHouse: What is ClickHouse best used for?

ClickHouse is optimized for analytical workloads on large datasets. It excels at fast aggregations and queries, being 10-100x faster than PostgreSQL on large aggregations.

Source
ClickHouse: Does ClickHouse support transactions?

ClickHouse has limited transaction support and expensive UPDATE/DELETE operations. It is not suitable for transactional workloads requiring strict ACID guarantees.

Source
ClickHouse: How does ClickHouse compare to PostgreSQL?

ClickHouse is 10-100x faster for analytics but PostgreSQL is better for transactional workloads. Many teams use both: PostgreSQL for writes via MaterializedPostgreSQL replication to ClickHouse for analytics.

Source
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Related pages

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