Comparison

VirtualPhoneSystem vs String

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

Head to head
About

VirtualPhoneSystem

This mobile application transforms your smartphone into a portable office. It allows you to make and receive calls, manage voicemails, and view faxes using your business number, ensuring your personal contact information remains private.

Highlights
  • Use business number as caller ID
  • Return calls from messages
  • Separate business and personal messages
  • Receive push notifications
  • Read voicemails
  • View faxes
Read full description

Download the Virtual Phone System app for iPhone – the mobile companion to your virtual phone system. Turns your mobile phone into your mobile office – take calls, read your voicemail, view faxes – make calls via Virtual Phone System and keep your mobile number private. Use the Virtual Phone System app on your iPhone to: -Make calls using your Virtual Phone System number as caller ID – keep your personal number private! -Return calls just by tapping the call back button on a message -Keep your business messages and faxes separate from your personal ones -Receive Push notifications for messages and faxes -Read your Voicemail -Receive and View Faxes Get the Virtual Phone System that includes: -Local, Vanity, 1 800 or other Toll Free Numbers -Multiple Extensions -Call Forwarding -Call Transfer -Call Recording -Send/Receive Faxes Online -Auto-Attendant -Music on hold -Instant Message/Fax Notification -Read your Voicemail -Professionally Recorded Greetings -Dial by Name directory Please note:You must have an active Virtual Phone System service plan in order to use the Virtual Phone System app on your iPhone.

About

String

Enhance customer engagement with a business SMS and voice platform. Organize your inbox, automate responses, and manage contacts efficiently. Send personalized messages to individuals or groups, and access your workflow from any device.

Highlights
  • Use existing or new phone numbers
  • Organize inbox with sales funnel view
  • Automated responses and auto-replies
  • Contact management and CRM integrations
  • 1-1, group, and mass messaging
  • Templates and voicemail transcription
  • Browser and mobile app access
Features
Read full description

Boost your brand engagement with String’s intuitive business SMS marketing, text and voice. ANY PHONE NUMBER, EVEN LANDLINES Use your existing mobile or landline number with String. Select a new local number or upgrade to a vanity or toll free number of your choice. ORGANIZE YOUR INBOX Transform your inbox into a sales funnel or kanban board with various viewing, filtering and tagging options — Stay on top of your conversations and never miss a message again. POWERFUL MESSAGE MANAGEMENT Mark Unread and Archive — You love it for your emails, you’ll love it for your texts. STAY RESPONSIVE, 24/7 Amplify your interaction with automations and Auto-Replies — Respond to texts and missed calls on time, every time. TAP INTO ENDLESS POSSIBILITIES Contact Management & Integrations — Save important contact notes directly from the message thread. Capture contacts, import from your phone or computer,, automate workflows, integrate with tools you love (like your CRM, etc). REACH THE MASSES, OR JUST ONE Conversational, Groups or Mass Messaging — Respond directly with 1-1 messaging, message with a group,r or send personalized Mass Messages to multiple people at once, individually. BUILD A LOYAL CUSTOMER BASE Send promos, reminders and confirmations and never miss a lead, client or customer with Elite features like triggered Keyword Responses, and Auto-Replies. SAVE TIME Templates — No more copy-pasting the same message over and over. No time to listen to voicemail? View voicemail transcriptions in your inbox with visual voicemail. USE IT ANYWHERE Browser & Mobile Apps — Increase your workflow efficiency with access to String from your computer and mobile device. CALL FORWARDING & VOICE Separate your personal and professional calls with call forwarding and flexible voice settings. GOT QUESTIONS? Email our stellar support at support@joinstring.com. Find helpful articles, join our customer community and create tickets in our Help Center: https://help.joinstring.com/hc/en-us Terms of Service: https://www.joinstring.com/terms Privacy Policy: https://www.joinstring.com/privacy

Screenshots

VirtualPhoneSystem4 screens
String4 screens

Verdict

The call

The clearest difference is review sentiment: String at 69% against VirtualPhoneSystem's 0%. String also leads on update cadence (every 2 months vs every 5 months) and ratings volume (62 vs 9). VirtualPhoneSystem's advantage is rating (4.0 vs 3.5) and monetization model (free vs free with in-app purchases). On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

VirtualPhoneSystem holds the better App Store score, 4.0 against 3.5. That said, the two scores are not equally well evidenced: String has 62 ratings behind it against 9, so its average is the more settled of the two. Written reviews complicate that: 0% of VirtualPhoneSystem's written reviews are positive against 69% of String's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

VirtualPhoneSystem ships an update every 5 months, String every 2 months. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.

Scorecard6 real differences · 4 level
VirtualPhoneSystem versus String: the parameters behind the verdict, then further details
ParameterVirtualPhoneSystemString
PriceFreeFree
Rating4.0 (9 ratings) — better3.5 (62 ratings)
Positive reviews0.0% of reviews68.6% of reviews — better
Number of ratings962 — better
Update frequencyEvery 5 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS9.3 — better15.0
Further details — not scored
Size3 MB68 MB
Age rating4+4+
DeveloperCOA NetworkNumberBarn, LLC

Customer experience

VirtualPhoneSystem

All ratings9 ratings
Positive77.8%
Neutral0.0%
Negative22.2%
Written reviews2 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

String

All ratings62 ratings
Positive64.5%
Neutral1.6%
Negative33.9%
Written reviews35 reviews
Positive68.6%
Neutral2.9%
Negative28.6%

In-app purchases

None

VirtualPhoneSystem

No in-app purchases

None

String

No in-app purchases

Questions

Is VirtualPhoneSystem free?
VirtualPhoneSystem is free to download, with no in-app purchases.
Is String free?
String is free to download, with no in-app purchases.
Which has better reviews, VirtualPhoneSystem or String?
VirtualPhoneSystem is rated higher. VirtualPhoneSystem averages 4.0 out of 5 from 9 ratings, while String averages 3.5 from 62 ratings.
Do VirtualPhoneSystem or String have ads?
Neither VirtualPhoneSystem nor String shows ads.
Which is updated more often, VirtualPhoneSystem or String?
VirtualPhoneSystem ships an update every 5 months, and String every 2 months. Most recently, VirtualPhoneSystem was updated on October 23, 2026 and String on October 24, 2026.

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