Send Automatic Follow-ups & Log Calls the Second a Phone Call Ends.
Turn any Android phone into an automatic trigger for n8n, Make, WhatsApp, and your CRM. Instant webhooks for answered and missed calls. Zero audio recording. 100% free.
Most businesses just want two simple things:
- 1.Automatically log customer calls (phone number, talk time, and timestamp) directly into their CRM or Google Sheets.
- 2.Send instant follow-up WhatsApp or SMS messages the moment a call ends or when a call is missed.
Cloud telephony providers (like Twilio, Exotel, or Aircall) charge \$50 to \$200/month per user plus per-minute fees and force you to port your phone numbers. ACN runs right on your Android phone using your existing SIM card and streams every call event straight to your automation tools.
Never records or hears conversations
Works with your carrier phone number
Webhook fires in <1 second
Zero subscriptions or credit card
What Can You Automate with ACN?
Everything businesses and agency builders use ACN for every day.
Instant WhatsApp Follow-ups
As soon as you hang up with a customer, automatically send them a WhatsApp message with your calendar booking link, product catalog, or meeting summary.
Missed Call Recovery
Never lose a client when you miss a call. Automatically text them back: "Hey, sorry I missed your call! How can I help?" and send an alert to your team Slack channel.
Google Sheets & CRM Call Logging
Stop manually typing call notes. Automatically log every incoming and outgoing call duration, timestamp, and caller ID into Google Sheets, HubSpot, or Salesforce.
Get Started in 3 Simple Steps.
Set it up once in under 2 minutes. It runs quietly in the background forever.
Install & Paste Webhook
Download the ACN APK, generate your free activation key, and paste your webhook URL (from n8n, Make, Zapier, or your server).
Make & Receive Calls Normally
Use your phone as usual. ACN quietly listens for when calls end with zero background battery drain and without touching any call audio.
Automations Trigger Instantly
The exact second a call concludes, your webhook receives the phone number, duration, and timestamp to run your automated workflow.
Clean JSON Webhook Payload.
Every call event is sent as standard JSON. Ready to map directly into n8n, Make, Zapier, or your database.
{
"eventId": "18f4a7c8-e320-41da-a750-f8ec0034a781",
"eventType": "incoming_answered",
"direction": "inbound",
"remotePhoneNumber": "+1 (555) 382-9014",
"phoneNumber": "+1 (555) 382-9014",
"monitoredPhoneNumber": "+1 (555) 900-1122",
"simSlot": 0,
"simCarrier": "Verizon",
"simDisplayName": "SIM 1",
"timestamp": "2026-09-20T04:55:12.000Z",
"durationSeconds": 134,
"source": "android"
}incoming_answered, incoming_missed, incoming_rejected, outgoing_answered, or outgoing_cancelled.inbound or outbound.phoneNumber).0 for SIM 1, 1 for SIM 2) for dual-SIM filtering.0 for missed, cancelled, or rejected calls).2026-09-20T04:55:12.000Z).android).Works with All Your Favorite Tools.
ACN sends standard webhooks compatible with every automation app and custom server.
Trigger automated self-hosted workflows and WhatsApp bots.
Connect phone call triggers to 1,500+ apps with zero code.
Catch Hook triggers to update contacts and send automated SMS.
Send immediate booking links, brochures, or thank you notes.
Build an automated real-time phone call log spreadsheet for free.
Log customer conversation times on contact timelines automatically.
Send instant missed call alerts so your sales team responds immediately.
Receive direct JSON POST requests on your Node.js, Python, or Go API.
Zero Audio Recording Guarantee.
ACN is strictly a call event trigger. It is technically incapable of listening to or recording conversations.
No Microphone Permission
ACN does not request Android microphone access (RECORD_AUDIO). Android security ensures the app cannot capture any sound.
Secure On-Device Storage
Call timestamps and durations are saved in an encrypted local database on your phone. You can set them to auto-delete after 7 or 30 days.
Direct to Your Webhook
Call triggers go straight from your phone to your designated webhook endpoint over secure HTTPS. No third-party data broker sees your logs.
Frequently Asked Questions
How do I send an automatic WhatsApp or text message after a phone call?▼
Install ACN on your Android phone and paste your n8n, Make.com, or Zapier webhook URL. When any call ends (answered or missed), ACN instantly sends the caller phone number, call duration, and timestamp to your webhook, which automatically triggers a WhatsApp or SMS message to the customer.
Does ACN record or listen to my phone calls?▼
No, never. ACN has a strict Zero-Audio Warranty. The app does not request Android microphone permission (RECORD_AUDIO). It only captures call length, timestamp, caller ID, and SIM slot details, making voice recording technically impossible.
Can ACN log incoming and outgoing calls into Google Sheets or CRMs?▼
Yes. ACN sends standard HTTPS JSON webhooks that easily connect to Google Sheets, HubSpot, Salesforce, Pipedrive, Notion, and Airtable via n8n, Make, or custom webhooks.
Does ACN support Dual-SIM Android phones?▼
Yes. ACN detects whether a call occurred on SIM 1 or SIM 2. You can set up your automations to only trigger for business SIM calls and completely ignore personal SIM calls.
What happens if my phone loses internet connection during a call?▼
ACN stores call events locally in a secure database on your phone. As soon as your internet connection is restored, it automatically sends all queued call events to your webhook with zero lost data.
Is ACN free to use?▼
Yes, ACN is 100% free for both personal and business use. There are no monthly subscriptions, per-minute charges, or credit card requirements.
Ready to Automate Your After-Call Follow-ups?
Download the free APK, get your activation key, and start triggering webhooks from your phone calls in under 2 minutes.