Comparison

SmartLine Second Phone Number vs Second Phone Number²

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

SmartLine Second Phone Number

Get a dedicated second phone number for your business to maintain privacy and professionalism. This app ensures calls are business-related, offers a spam filter, custom voicemail, and voicemail-to-text transcription. Manage your business communications efficiently with organized history and timely notifications.

Highlights
  • Dedicated business phone number
  • Professional call quality (not VoIP)
  • Spam call filtering
  • Customizable voicemail greetings
  • Voicemail to text transcription
  • Set business hours for calls
  • Organized call and text history
Read full description

SmartLine is a second phone number for your business. When you receive a call through SmartLine, you know it’s for business so you can answer professionally. When you call or text through SmartLine, customers see your new business phone number so your personal number stays private. - Professional Quality. Calls use your cellular connection – NOT VOIP – to give you the call clarity and reliability you need to sound professional. - Spam Call Filter. Answer calls with confidence because spam calls are sent directly to voicemail. - Custom Voicemail. Record a custom voicemail greeting to prompt callers to leave a message. - Voicemail to Text. Get your business voicemail automatically transcribed to text to save you time. - Set Business Hours. Choose when you’re available for business calls and send callers to voicemail after hours. - Stay Organized. See your conversation history of calls, texts, pictures, and voicemail, organized by contact. - Stay Notified. Be notified and follow up quickly whenever you have missed calls, voicemail messages, or texts. -- Terms -- An existing SmartLine subscription is required to use this app. Currently available in the US only. SmartLine will automatically renew via iTunes, unless you cancel 24 hours before the the end of the current billing period. Easily manage and cancel your SmartLine 2nd phone number at any time through your iTunes subscription settings. If you didn't purchase SmartLine through iTunes, you can manage your subscription through the GoDaddy website. Terms of use: https://www.godaddy.com/legal-agreements.aspx Privacy policy: https://www.godaddy.com/Agreements/Privacy.aspx

About

Second Phone Number²

Obtain real, functional phone numbers with unlimited calling and texting. Ideal for an additional line, it offers numbers across 300+ US area codes and in over 20 countries globally, ensuring privacy for your primary number.

Highlights
  • Acquire local numbers globally
  • Unlimited calling and texting
  • Integrate with existing contacts
  • Call forwarding
  • WiFi or data access
  • No contracts or hidden fees
Features
Read full description

Second Phone Number² Free Text & Calls Elevate Your Communication Globally. Say goodbye to the inconvenience of carrying extra devices or changing SIM cards. With Second Phone Number², experience the freedom of obtaining real, fully-functional phone numbers endowed with unlimited call and text capabilities. Ideal for those seeking an additional line, our service extends across more than 300 area codes within the US and now proudly offers local numbers in over 20 countries worldwide. Second Phone Number² is dedicated to ensuring your communications are kept private and distinct from your primary line. Whether for personal or business purposes, the numbers you acquire through our app operate independently, guaranteeing the privacy of your main number. This invaluable feature makes Second Phone Number² indispensable for secure online dating, confidential shopping, safe travel, and more, providing a dependable and private communication channel wherever you are in the world. Core Features: - Acquire local numbers from over 300 area codes across the US and in over 20 countries globally. - Unlimited calling and texting to local and mobile numbers, ensuring you stay connected without boundaries. - Integrate seamlessly with your current contacts for effortless communication. - Convenient call forwarding to your primary number. - Access Second Phone Number² on any connected device, be it over WiFi or data. Second Phone Number² is designed for ease and simplicity, requiring no contracts, hidden fees, or verification processes. Focused on privacy, it allows you to manage and discard numbers as needed securely. Whether you need a secondary number for international business dealings, online transactions, or maintaining anonymity across borders, Second Phone Number² is your premier choice for a secure, private, and comprehensive telecommunication solution. Information About Subscription You can cancel your subscription or free trial anytime by cancelling your subscription through your iTunes account settings, or it will automatically renew. This must be done 24 hours before the end of the free trial or any subscription period to avoid being charged. Subscription with a free trial period will automatically renew to a paid subscription. Please note: any unused portion of a free trial period (if offered) will be forfeited when you purchase a premium subscription during the free trial period. Subscription payments will be charged to your iTunes account at confirmation of your purchase and upon commencement of each renewal term. For more information, please see our Privacy Policy and Terms of Use. Privacy Policy: https://2ndsecond.xyz/privacy Terms of Use : https://2ndsecond.xyz/terms

Screenshots

SmartLine Second Phone Number4 screens
Second Phone Number²4 screens

Verdict

The call

The clearest difference is in-app purchases: SmartLine Second Phone Number at none against Second Phone Number²'s 10. SmartLine Second Phone Number also leads on ratings volume (44K vs 7) and rating (4.7 vs 4.4). Second Phone Number²'s advantage is update cadence (weekly vs every 2 months). On price, ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Second Phone Number² sells 10 in-app purchases, starting at $5.99 per month. SmartLine Second Phone Number asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

SmartLine Second Phone Number holds the better App Store score, 4.7 against 4.4. That said, the two scores are not equally well evidenced: SmartLine Second Phone Number has 44K ratings behind it against 7, so its average is the more settled of the two. Written reviews point the same way: 15% of SmartLine Second Phone Number's written reviews are positive against 0% of Second Phone Number²'s.

UpkeepUpdate frequency

SmartLine Second Phone Number ships an update every 2 months, Second Phone Number² weekly. The most recent releases landed on November 4, 2026 and October 30, 2026 respectively.

Scorecard7 real differences · 3 level
SmartLine Second Phone Number versus Second Phone Number²: the parameters behind the verdict, then further details
ParameterSmartLine Second Phone NumberSecond Phone Number²
PriceFreeFree
Rating4.7 (44K ratings) — better4.4 (7 ratings)
Positive reviews15.5% of reviews — better0.0% of reviews
Number of ratings44K — better7
Update frequencyEvery 2 monthsWeekly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationSubscriptionFree with in-app purchases — better
DevicesiPhone, iPodiPhone, iPad
Requires iOS12.1 — better16.0
Further details — not scored
Size75 MB19 MB
Age rating4+4+
DeveloperGoDaddy.com, LLCAppios Bilisim

Customer experience

SmartLine Second Phone Number

All ratings44,037 ratings
Positive94.0%
Neutral3.3%
Negative2.7%
Written reviews110 reviews
Positive15.5%
Neutral13.6%
Negative70.9%

Second Phone Number²

All ratings6 ratings
Positive83.3%
Neutral0.0%
Negative16.7%
Written reviews2 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

Bugs and requests

SmartLine Second Phone Number

Reported bugs

3 issues
  • Disappearing call/text history
  • Incorrect number display on outgoing calls
  • Failure to sync across devices

Requested features

4 requests
  • Ability to send multiple photos/files
  • Improved caller ID display
  • Option to have multiple voicemail greetings
  • Compatibility with VPNs and older devices

Second Phone Number²

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

SmartLine Second Phone Number

No in-app purchases

10 purchases

Second Phone Number²

Subscriptions8
  • 1st Phone Number Monthly$5.991 Month
  • 2st Phone Number Monthly$5.991 Month
  • 2st Phone Number Monthly$9.991 Month
Show 5 more
  • 1st Phone Number Monthly$9.991 Month
  • 1st Phone Number Monthly$14.991 Month
  • 2st Phone Number Monthly$14.991 Month
  • 1st Phone Number Monthly$19.991 Month
  • 2st Phone Number Monthly$19.991 Month
One-time2
  • 100 Credits$2.99
  • 500 Credits$9.99

Questions

Is SmartLine Second Phone Number free?
SmartLine Second Phone Number is free to download, with no in-app purchases.
Is Second Phone Number² free?
Second Phone Number² is free to download, with in-app purchases available.
Which has better reviews, SmartLine Second Phone Number or Second Phone Number²?
SmartLine Second Phone Number is rated higher. SmartLine Second Phone Number averages 4.7 out of 5 from 44K ratings, while Second Phone Number² averages 4.4 from 7 ratings.
Do SmartLine Second Phone Number or Second Phone Number² have ads?
Neither SmartLine Second Phone Number nor Second Phone Number² shows ads.
Which is updated more often, SmartLine Second Phone Number or Second Phone Number²?
SmartLine Second Phone Number ships an update every 2 months, and Second Phone Number² weekly. Most recently, SmartLine Second Phone Number was updated on November 4, 2026 and Second Phone Number² on October 30, 2026.

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