Sync.ME
Sync.me is an Israel-based mobile software company (founded 2011) that builds caller ID, spam blocking, and contact sync apps for consumers worldwide, powered by a proprietary database of 5B+ phone numbers across 190+ countries with 20M+ app installs.
- Company typePrivate
- Founded2011
- HeadquartersTel Aviv, Israel
- Headcount11–50
- GTM typeB2C
- OfferingSoftware
What Sync.ME does
Sync.me Technologies Ltd. is an Israel-based, privately held mobile software company founded in 2011 that builds caller identification, spam protection, and contact synchronization applications for individual smartphone users worldwide. The company's core product, the Sync.me app, delivers real-time caller ID by matching incoming numbers against a proprietary global database of more than 5 billion phone numbers across 190+ countries, supplemented by community-driven spam reporting through Name Tag and Call Block features, reverse phone lookup, and contact enrichment from social networks including Facebook, LinkedIn, VK, and formerly Google+. The platform blocks approximately 450 million spam calls per month and has accumulated more than 20 million app installs globally, supported by localization in 11 languages.
The technology stack combines a global phone number database with AI-powered caller identification and behavioral anomaly detection for spam and scam detection. Sync.me distributes exclusively through self-serve digital channels: the Apple App Store, Google Play Store, and direct downloads from sync.me, with growth driven by app store optimization, content marketing (a blog covering caller ID, spam prevention, and contact management), and word-of-mouth. The business model is freemium: the app is free with core caller ID, spam blocking, and contact sync features, with an undisclosed-priced premium tier that removes advertising.
The company also operates two related brands: Livecaller, a focused companion app for real-time caller ID and spam blocking launched in 2026, and Calendar.AI, an adjacent scheduling and AI-powered meeting assistant. Sync.me is led by co-founder and CEO Ken Vinner, CTO Vadim Harnas, and director Shlomo Unger. The company has disclosed only one funding round ($4M in November 2012) and has operated largely bootstrapped for over a decade with a headcount of 11-50 employees, indicating a capital-efficient, product-led organization.
Sync.ME firmographics
Firmographics- Name
- Sync.ME
- Legal name
- Sync.me Technologies Ltd.
- Website
- https://sync.me
- Company type
- Private
- Founded year
- 2011
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- Sync.me is an Israel-based mobile software company (founded 2011) that builds caller ID, spam blocking, and contact sync apps for consumers worldwide, powered by a proprietary database of 5B+ phone numbers across 190+ countries with 20M+ app installs.
- Ownership category
- akta.pro rank
Where Sync.ME is headquartered
LocationHeadquarters
- HQ city
- Tel Aviv
- HQ country
- Israel
- HQ region
- Middle East
Markets served
Sync.ME business model
Business model- GTM type
- B2C
- Offering type
- Software
- Cost components
- Technology or R&D, Personnel, Infrastructure, Marketing or Sales, Operations
Revenue model
- Freemium App with Premium Upgrade: The app is free to download and use with core caller ID and spam detection features. A premium ad-free experience is offered as an upgrade option. Revenue is generated from premium subscriptions while the free tier drives user acquisition and network effects.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Freemium | Monthly | Free tier with core caller ID and spam detection features |
Go-to-market motion1 record
Distribution channels2 records
Marketing channels4 records
Sync.ME product offering
Product offeringCore offering
Sync.me is a freemium mobile application that identifies unknown callers in real time using a global database of 5 billion+ phone numbers, blocks spam calls and robocalls, enables reverse phone number lookups, and synchronizes phone contacts with social network profile photos and information. It is distributed globally across iOS and Android app stores and supported by community-driven Name Tag and Call Block features that improve accuracy through network effects.
Product overview
Sync.me is a single unified mobile application offering caller ID, spam protection, and contact synchronization services. The core Sync.me app provides real-time caller identification, spam detection and blocking, reverse phone lookup, and contact sync with social profiles. Related products include Livecaller (a companion app for real-time caller ID and spam blocking) and Calendar.AI (a related calendar application). The platform operates globally across 190+ countries with a database of over 5 billion phone numbers and blocks approximately 450 million spam calls monthly. Key features include Caller ID, Spam Call Blocker, Reverse Phone Lookup, Contact Sync, Sync.me Search, Name Tag, and Call Block functionalities.
Differentiator
Problem solved
Functional benefit
Brands
- Calendar.AI: Calendar scheduling and AI-powered meeting assistant application
- Livecaller
Products and services
- Sync.me A freemium mobile caller ID and spam protection app for iOS and Android that identifies unknown callers in real time using a global 5B+ phone number database, blocks spam/robocalls, enables reverse phone lookups, and synchronizes phone contacts with social network profile photos.
- Livecaller A companion mobile application from the Sync.me team that delivers real-time caller ID and spam blocking for every incoming call, instantly identifying unknown callers and showing caller information even for numbers not in the user's contacts.
- Calendar.AI A related application from the Sync.me team described as a calendar scheduling and AI-powered meeting assistant, available in the More Apps section of sync.me.
Quantifiable outcome
- 5B+ phone numbers searchable worldwide
- +3 more outcomes
Companies that use Sync.ME
Customer profileSegments1 record
Ideal customer profiles1 record
Sync.ME technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Integration10 records
AI capability3 records
Feature7 records
Sync.ME partnerships and signals
Strategic signalPartnerships
One partnership is on record.
- Social Networks (Facebook, Google+, VK, LinkedIn)corePlatforms from which Sync.me retrieves user profile information and contact data for contact synchronization and enrichment features. Users can connect their social accounts to sync profile photos and details to their phone contacts.
Scale indicators4 records
Recent moves6 records
Expansion highlights5 records
Sync.ME competitors and assessment
Company assessmentDirect peers
- TrapCall: TrapCall focuses on revealing unknown/blocked caller IDs and blocking spam calls, serving the same consumer use cases as Sync.me's reverse phone lookup and call-block features.
- Showcaller: Showcaller is a caller ID and spam-blocking mobile app with a community-reported spam database, closely overlapping Sync.me's core feature set and target audience.
- Tellows: Tellows operates a community-driven spam-number directory and caller ID app, competing with Sync.me on reverse phone lookup and spam reputation data.
- Eyecon: Eyecon is a caller ID app that enriches contacts with photos and social profile pictures, directly mirroring Sync.me's contact sync and visual caller ID value proposition.
- Truecaller: Truecaller is the global leader in consumer caller ID and spam blocking, with a similar community-sourced phone number database and freemium model directly competing with Sync.me across the same use cases and geographies.
- Hiya: Hiya provides caller ID, spam detection, and phone reputation services for both consumer apps and enterprise/telecom customers, competing directly with Sync.me on core caller identification technology.
- Whoscall (Gogolook): Gogolook's Whoscall is a leading caller ID and spam-blocking app popular in Asia, offering nearly identical features (community-reported spam database, reverse lookup) to Sync.me's product.
Broad incumbents
- Apple (iOS Caller ID / Silence Unknown Callers): Apple has progressively built native caller ID, spam labeling, and silence-unknown-callers features into iOS, representing a broad incumbent threat that competes with Sync.me's value proposition at the OS level.
- Mr. Number (Google): Mr. Number (acquired by Google) provided caller ID and call-blocking features; it represents the broader incumbent capability set that Google now integrates natively into its Phone app, competing with Sync.me via OS-level features.
- Google Phone App (Call Screening / Caller ID): Google's Phone app includes built-in caller ID, spam warnings, and Call Screening, making it a broad incumbent competitor that substitutes for Sync.me's offering on Android devices.
Market position
Strengths4 records
Weaknesses4 records
Competitive moat5 records
Key risks5 records
Key highlights6 records
Customer concentration
Sync.ME social profiles
Digital presenceSync.ME financial estimates
Financial estimateRevenue estimate
Valuation estimate
Sync.ME leadership team
Management profileNumber of profiles
Profiles3 records
Sync.ME funding detail
Funding detailFunding overview
Funding rounds1 record
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Sync.ME M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Sync.ME
What does Sync.ME do?
Sync.me is a freemium mobile application that identifies unknown callers in real time using a global database of 5 billion+ phone numbers, blocks spam calls and robocalls, enables reverse phone number lookups, and synchronizes phone contacts with social network profile photos and information. It is distributed globally across iOS and Android app stores and supported by community-driven Name Tag and Call Block features that improve accuracy through network effects.
Is Sync.ME a public or private company?
Sync.ME is a private company. It is classified as venture growth investor backed and is currently operating.
When was Sync.ME founded?
Sync.ME was founded in 2011. It employs 11 to 50 people.
Where is Sync.ME based?
Sync.ME is headquartered in Tel Aviv, Israel, in the Middle East region.
How does Sync.ME make money?
One revenue line is on record: freemium App with Premium Upgrade.
Who are Sync.ME's main competitors?
Direct peers on record are TrapCall, Showcaller, Tellows, Eyecon, Truecaller, Hiya and Whoscall (Gogolook). Broad incumbents are Apple (iOS Caller ID / Silence Unknown Callers), Mr. Number (Google) and Google Phone App (Call Screening / Caller ID).
Does Sync.ME have an API?
No public API is recorded for Sync.ME.