Real-time
Two-way sync
Changes in Apollo.io or Firebase instantly reflect in both systems. No stale data, no manual imports.
CRM ⇄ Database
Apollo.io to Firebase integration — real-time, two-way sync
Keep Apollo.io and Firebase in sync without custom scripts. Cut weeks of integration work, eliminate silent data drift, and give your team a single, reliable source of truth.
- SOC 2 and 6 other compliance frameworks
- POC with real engineers in minutes
Adopted by fast-scaling companies moving mission-critical data in real time
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Case study
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Why teams connect Apollo.io and Firebase
Treat Apollo.io like part of your database: its records live in Firebase as real tables, and writes in either place sync to the other in seconds.
Product and engineering teams constantly need CRM data, and the CRM API is a poor way to get it: rate limits, pagination, custom objects, and integration code that breaks when an admin renames a field. What they actually want is the data in Firebase, where it can be queried and joined like everything else.
Stacksync mirrors Contacts, Accounts, People (database records), Sequences from Apollo.io into Firestore Collections, Firestore Documents, Subcollections, Realtime Database Nodes in Firebase with real-time, bi-directional sync. Read CRM records with plain queries; write updates from your application and they appear in Apollo.io with validation intact. Go-to-market teams keep working in the CRM, engineers keep working in the database, and neither has to think about the other.
Common use cases
- Deduplicate contacts across Apollo and the CRM by syncing on email as the match key.
- Push CRM opportunity stages back into Apollo so reps see pipeline context while sequencing.
- Combine Firebase Authentication users with billing and CRM records into one customer table.
- Replace one-off Cloud Functions export code with managed, continuous sync.
Product events onto CRM records
Signup, usage, or lifecycle changes written to Firebase sync onto the matching records in Apollo.io, giving go-to-market teams live product context.
Internal tools without API code
Back-office apps read and write the synced tables; Stacksync handles the Apollo.io API, limits, and retries.
Trigger workflows from CRM changes
Field and stage updates in Apollo.io arrive as row changes in Firebase, ready to drive jobs and notifications.
What you can sync between Apollo.io and Firebase
Representative objects on each side — any object or custom field can map to any target. Schemas are auto-detected; types are converted between the two systems.
| Apollo.io objects | Firebase objects | |
|---|---|---|
| Accounts Company records with firmographic attributes, matched to CRM accounts during sync. | Authentication Users User accounts read into CRMs and warehouses for customer records. | |
| People (database records) Prospects from Apollo's global database, pulled into downstream systems once enriched or saved. | Cloud Storage Objects Files referenced from documents; usually synced as metadata plus URLs. | |
| Sequences Outreach cadences (emailer campaigns in the API); enrollment status is read to track which contacts are being worked. | Cloud Functions Triggers Server-side hooks that fire on document changes and can push updates outward. | |
| Deals (Opportunities) Pipeline records that can be read and written to keep Apollo aligned with the CRM of record. | Firestore Collections Top-level groupings of documents that a sync maps to tables or SaaS objects. | |
| Tasks and calls Rep activity records synced for activity reporting and coaching workflows. | Firestore Documents Schemaless JSON-like records, the primary unit synced to and from external systems. | |
| Custom fields Account- and contact-level custom attributes mapped field-by-field in a sync. | Subcollections Nested collections under documents, typically flattened into related tables during sync. |
What ships with Apollo.io ⇄ Firebase
Connect Apollo.io and Firebase for flexible, real-time data sync.
Real-time sync, workflow automation, event queues, EDI, and monitoring, for every Apollo.io–Firebase connection.
No-code + pro-code
Workflow automation
Trigger automated workflows whenever Apollo.io or Firebase data changes, update records, fire webhooks, or kick off sequences without brittle API scripts.
At scale
Event queues
Handle millions of events per minute without losing a single Apollo.io or Firebase record.
Observability
Monitoring
Track your Apollo.io ⇄ Firebase sync health, view errors, and replay failed events in one click.
Trading partners
EDI
Transform legacy EDI complexity into simple database interactions between Apollo.io and Firebase.
How the Apollo.io and Firebase connectors work
Apollo.io
- Integration surface
- REST API
- Authentication
- API key (passed in request headers); master keys unlock account-wide endpoints
- Change detection
- Polling on updated-at timestamps; webhook callbacks exist only for delivering asynchronous enrichment results, not as a general change-event stream
- Capabilities
- read · write
- Rate limits
- Rate limits and enrichment credits vary by plan; bulk endpoints are throttled separately from single-record calls
Firebase
- Integration surface
- REST and gRPC APIs, typically accessed through the Firebase Admin SDK
- Authentication
- Google service account credentials (IAM) for server-side access; Firebase Auth tokens for client contexts
- Change detection
- Real-time snapshot listeners on Firestore queries and Cloud Functions triggers on document changes
- Capabilities
- read · write
- Rate limits
- Subject to Firestore's documented operation quotas and per-document write throughput limits
How it works
How to connect Apollo.io to Firebase — three steps, no code
Configure and sync within minutes, no code. Whether you sync 50k or 100M+ records, Stacksync handles the queues, infra, and plumbing. Integrations are non-invasive and need zero setup on your systems.
- 01
Connect your apps
Authenticate Apollo.io and Firebase with each platform's native method — OAuth, API keys, or service accounts — plus secure options like SSH tunneling, IP whitelisting, and VPC peering.
Apollo.io
connected
Firebase
connected
OAuth 2.0SSH tunnelSSL certificateVPC peering - 02
Choose tables
Pick the Apollo.io and Firebase objects to sync — Stacksync auto-detects both schemas, including custom fields where the platform exposes them. Sync to existing tables, or let Stacksync create new ones with ideal data types.
objects · Apollo.io ⇄ FirebaseCustomers 12,480Sales Orders 8,213Invoices 5,902Items 1,344 - 03
Map fields
Fields map automatically even when names and types differ. Stacksync handles transformation and type casting for you, zero configuration required.
Apollo.io FirebaseCompany company_name textEmail email textAmount amount numericCreated created_at timestamp
FAQ
Apollo.io and Firebase integration FAQ
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Yes. Stacksync provides a managed, real-time two-way integration between Apollo.io and Firebase: authenticate both systems, choose the objects to sync (such as Apollo.io's Accounts and People (database records)), map fields visually, and changes propagate both ways in milliseconds — no code required.
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Yes. Each object mapping can be bidirectional or restricted to a single direction (both systems accept writes). Read-only mirrors, one-way pushes, and full two-way sync can be mixed in the same integration.
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Common patterns for Apollo.io and Firebase: Product events onto CRM records; Internal tools without API code; Trigger workflows from CRM changes. Signup, usage, or lifecycle changes written to Firebase sync onto the matching records in Apollo.io, giving go-to-market teams live product context.
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Apollo.io: REST API. Authentication: API key (passed in request headers); master keys unlock account-wide endpoints. Firebase: REST and gRPC APIs, typically accessed through the Firebase Admin SDK. Authentication: Google service account credentials (IAM) for server-side access; Firebase Auth tokens for client contexts. Stacksync manages authentication, retries, and rate limits on both sides.
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Apollo.io: Apollo distinguishes between people in its global database and contacts saved to your account; only saved contacts carry your custom fields and sequence history. Firebase: Firestore documents are schemaless and support nested maps and arrays, so syncs define field mappings per document path rather than from a fixed schema. Stacksync's field mapping accounts for these differences between Apollo.io and Firebase without custom code.
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Stacksync is SOC 2 Type II and ISO 27001 certified with HIPAA BAA support. Data is encrypted in transit, and a zero-persistent-storage architecture means Apollo.io and Firebase records are not retained after a sync operation.
SECURITY
Security teams love Stacksync
As a data company, we understand the importance of keeping your data secure. Stacksync is built with security best practices to keep your data safe at every layer, and is DPF-certified for US, EU, UK and CH data transfers.
SOC 2 type II
ISO 27001
HIPAA BAA
GDPR
CCPA
CSA STAR
DPF US-EU-UK-CH
→ SECURITY WITH BENEFITS
SSO & SCIM
Let your users access Stacksync from your centralized user management systems. Works with Okta, Azure, Google SSO and more.
Alerts
Immediately get alerted about record syncing issues over email, Slack, PagerDuty and WhatsApp. Resolve issues from a centralized dashboard with retry and revert options.
Secure connection options
Securely connects to your systems with:
Related integrations
Every pair below is a real-time, two-way sync. Search all 386 integrations available for Apollo.io and Firebase.
Popular · 8 of 386
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Apollo.io ⇄ IBM AS/400 -
Apollo.io ⇄ IBM Informix -
Apollo.io ⇄ InfluxDB -
Apollo.io ⇄ InterSystems IRIS -
Firebase ⇄ Drift -
Firebase ⇄ Folk CRM -
Firebase ⇄ Freshsales -
Firebase ⇄ Freshworks CRM
No integrations match .
