Report updated May 11, 2026
SmartLine Second Phone Number
For small business owners and professionals requiring a dedicated business line to separate work communications from personal mobile activity.
SmartLine Second Phone Number is a struggling business app that is available. With a 4.6/5 rating from 50K reviews, it struggles with user retention. Users particularly appreciate core communication functionality provided reliable business connectivity for long-term users prior to recent migration, though forced migration to the new messaging product causes total loss of access to business numbers remains a common concern.
What is SmartLine Second Phone Number?
SmartLine is a business communication app that provides a dedicated second phone number for professional calls and texts on iOS and Android.
Users hire SmartLine to maintain professional boundaries and call reliability by separating work communications from personal mobile activity without requiring extra hardware.
Current Momentum
v4.51
- Mandated business number registration for texts.
- Initiated service migration to GoDaddy Conversations.
Active Nemesis
Burner: Second Phone Number
By Ad Hoc Labs
Other Rivals
7-Day Rank Pulse 🇺🇸
BusinessNo ranking data
Rating Pulse 🇺🇸
Recent User Mood
What makes this app unique?
What Does It Look Like?
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What Are The Key Features?
Routes business calls through the cellular network rather than VOIP to maintain call clarity.
Automatically redirects suspected spam calls to voicemail.
Transcribes business voicemail messages into text format.
How much does it cost?
- Local number at $9.99/month
- Toll-free number at $19.99/month
Subscription model anchored at $9.99/month, with a 7-day free trial used as the primary acquisition funnel.
Who Built It?
GoDaddy Mobile
Empowering entrepreneurs to manage their digital presence and customer interactions through a unified mobile business suite.
Portfolio
8
Apps
What other apps does GoDaddy Mobile make?
GoDaddy: Websites & Marketing
GoDaddy Conversations - Inbox
GoDaddy Investor
GoDaddy Commerce: POS Payments
GoDaddy Commerce: Payments POS
FreedomVoice
Explore the full GoDaddy Mobile report
Portfolio breakdown, audience, momentum, and every app published by GoDaddy Mobile.
What do users think recently?
High confidence · Latest 82 of 99 total reviews analyzed · Based on 99 reviews. Signal may be noisy.
How did the latest release land?
What is the recent mood?
Recent user voice shows a upset sentiment. Users appreciate core communication functionality provided reliable business connectivity for long-term users prior to recent migration, but report forced migration to the new messaging product causes total loss of access to business numbers.
What Users Love
What Frustrates Users
What Users Want
View the full user-sentiment analysis
Mood gauge, ratings & review-volume history, every praise / complaint / request, and sentiment over time.
What is the competitive landscape for SmartLine Second Phone Number?
How's The Business Market?
Market outlook for this category
Available very soon
Which niche is SmartLine Second Phone Number in?
to manage a separate business phone number
Explore the full Business Communication Loggers niche
Every app in this space — 1 tracked, the niche's live rankings, and Marlvel's editorial take on the job-to-be-done.
The rivals identified
Nemeses(1)
With over 92,000 reviews and a high release velocity of 17 updates in six months, Burner is the dominant, active market leader in the consumer-focused second phone number space.
Differentiators
- Offers advanced auto-reply and custom voicemail greetings for specific lines, unlike SmartLine's basic routing.
- Provides granular control over line expiration and deletion, catering to temporary and privacy-focused use cases.
- Maintains a high-frequency release cadence that consistently introduces new privacy-centric communication features.
Head to head
SmartLine must pivot toward deeper business-process automation to differentiate from Burner's superior privacy and consumer-utility feature set.
Contenders(4)
Google Voice remains a massive, high-utility competitor with deep integration into the Google Workspace ecosystem.
Differentiators
- Seamlessly syncs with Google Contacts and Calendar, creating a unified communication hub for power users.
- Offers robust, free-to-use transcription services for voicemails that outperform most paid third-party alternatives.
A massive user base and long-standing presence make this a significant alternative for users prioritizing free, ad-supported access.
Differentiators
- Ad-supported monetization model allows for a completely free entry point that undercuts subscription-based business apps.
- Optimized for high-volume text messaging and social interaction rather than formal business telephony workflows.
Hushed competes directly on the 'second number' value proposition with a focus on flexible, non-contract pricing.
Differentiators
- Supports international numbers across multiple countries, providing a global reach that SmartLine currently lacks.
- Offers a wide variety of disposable number options for short-term projects or classified ad interactions.
Grasshopper is a direct business-focused competitor that targets the same professional demographic as SmartLine.
Differentiators
- Includes professional-grade virtual receptionist and extension routing features specifically designed for small business teams.
- Focuses on multi-user management, allowing businesses to scale beyond a single-user second number model.
Same space(3)
A professional-grade business communication suite that competes on reliability and enterprise-level service.
Differentiators
- Focuses on unified communications as a service (UCaaS), integrating CRM data directly into the calling interface.
- Provides dedicated 24/7 customer support, a key differentiator for businesses requiring high-uptime communication tools.
An enterprise-grade communication platform that serves as an adjacent, high-end alternative for growing businesses.
Differentiators
- Provides full-featured VoIP, video conferencing, and team messaging in a single enterprise-ready mobile application.
- Offers advanced administrative controls and analytics that are overkill for solo entrepreneurs but essential for teams.
Focuses on the conferencing aspect of business communication, serving as an adjacent tool for professional meetings.
Differentiators
- Features AI-powered meeting summaries and transcription that provide actionable insights post-call.
- Prioritizes browser-based, no-download meeting access, reducing friction for external clients joining calls.
Compare SmartLine Second Phone Number against every rival
All rivals in one side-by-side table — identity, store metrics, ratings & sentiment, and strategic intel — plus a head-to-head page for each.
The outtake for SmartLine Second Phone Number
Strengths to defend, gaps to attack
Core Strengths
- Cellular-based calling ensures professional audio quality
- GoDaddy ecosystem integration provides a clear onboarding path for existing business customers
Critical Frictions
- Forced service migration causing total account lockout
- Technical instability and frequent app crashes
- Opaque subscription management and billing practices
Growth Levers
- Transparent communication regarding migration timelines to restore trust
- Expansion of automated business-process tools to differentiate from consumer-focused rivals
Market Threats
- Burner's high-frequency release cadence siphoning privacy-focused users
- Google Voice's free transcription and Workspace integration undercutting paid utility
What are the next best moves?
Ship emergency account recovery flow because migration lockouts are the #1 churn driver → restore access for long-term users
Migration-related account lockouts are the top complaint theme in recent sentiment data.
Trade-off: Pause the GoDaddy Conversations integration sprint — account recovery is critical to preventing total user loss.
Audit billing transparency because unauthorized charge complaints are rising → reduce refund surge
Users report continued billing after cancellation, creating significant friction.
Trade-off: Same-quarter capacity available — no major lever displaced.
A counter-intuitive read
The forced migration to GoDaddy Conversations is not just a technical hurdle but a strategic error that treats a high-utility business tool as a commodity, inviting churn to more stable, privacy-focused competitors.
Feature Gaps vs Competitors
- Virtual receptionist and extension routing (available in Grasshopper but missing here)
- International number support (available in Hushed but missing here)
Key Takeaways
SmartLine provides reliable cellular-based business calling, but the current migration-related account lockouts are destroying user trust, so the PM must prioritize immediate account recovery to prevent a total collapse of the subscriber base.
Where Is It Heading?
Declining
The business-communication market is consolidating around platforms that offer stable, multi-user management and deep CRM integration. SmartLine's current focus on a disruptive service migration leaves it exposed to competitors like Burner and Grasshopper, which are actively capturing the professional demographic through superior stability and feature depth.
Forced migration lockouts are driving high churn, which compounds the existing rating drag on the Android platform.
Persistent technical instability in the latest version prevents consistent usage, further eroding the daily active habit for business users.