Comparison

Second Line Calling/Texting vs Contact Groups

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

Head to head
About

Second Line Calling/Texting

Add a second phone number to your device for private texting and calling. Protect your personal number from spam and unwanted calls when dating, selling online, or for any project. Easily manage multiple numbers and contacts within the app.

Highlights
  • Add a second phone number
  • Keep personal number private
  • Unlimited texts and calls (premium)
  • Create multiple numbers
  • Separate contacts
  • Burn temporary numbers
  • Mask caller ID
Features
Read full description

Flexible Numbers - Add another phone number on your existing device Keep your personal phone number private Instead of giving out your personal number, create a new one and never worry about privacy or receiving spam calls. Use it for dating, online ads or anything else! Get a number in seconds Getting started is simple! Just download the app and start texting or calling right away Unlimited Texts & Calls With the premium plan, get unlimited texting and calling in the US and Canada Create multiple numbers Stay in control by creating multiple numbers on the same device Unlimited calling, texting and picture messaging Make calls and send and receive messages right from the app, using any of your numbers. Easily switch between your numbers at any time Separate contacts Manage your contacts separately from your phone's contacts Protect your privacy Protect your app with a passcode, Touch ID or Face ID Temporary numbers When you are done with a phone number, simply burn it Mask your caller ID with a new, private, flexible and reliable phone number Flexible Numbers Phone is a second phone number for everyday situations such as dating, relationships and more The best number changer app for private texting and calling! It's just like any other phone number but it protects your carrier number and safeguards your identity. A layer of security between you and the ones you are texting and calling. Flexible Numbers Phone is the perfect temporary number for: • buying things online (like craigslist, ebay, etc) • online dating (stay safe!) • applying for jobs • hosting airbnbs • any other kind of project! Avoid giving out your real carrier number to strangers and give out your Flexible Numbers Phone number instead! To get started download the app and get your new number now! Premium Number Plan: - We offer a monthly premium subscription plan that offers unlimited calls, texts and MMS messages within North America - We also offer a monthly basic subscription plan that offers a phone number for texting and calling within North America - Payment will be charged to iTunes Account at confirmation of purchase and at the end of each month - Your subscription automatically renews unless auto-renewal is turned off at least 24 hours before the end of the current monthly subscription - You can manage your subscription and switch off the auto-renewal by going to your account settings after purchase - You cannot cancel the current subscription during the active subscription period - Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable - Privacy Policy: https://flexiblenumbers.com/privacy/ - Terms: https://flexiblenumbers.com/terms/ You may not use the service for sending fake texts, prank texts, spoof texts or for anonymous texting or anonymous calling. The recipient you text or call will not know who you are (unless you tell them), however you are never completely anonymous when texting or making calls. If you break these terms, your device will be banned and your identity might be revealed to the authorities upon request. You must be at least 13 years old to use the service. Not for 911 emergency services. Have questions, problems, or feedback? Contact us at contact@flexiblenumbers.com

About

Contact Groups

Organize contacts into groups for efficient communication. Send mass texts and emails with customizable templates. Manage contacts easily with features like bulk deletion and preferred contact details.

Highlights
  • Create and manage contact groups
  • Send group texts and emails
  • Reusable templates for messages
  • Choose contact number/email
  • Share contact groups
  • Delete multiple contacts
Features
Read full description

Quickly create and manage contact groups, send group emails, and group texts at the touch of a button! Easily create groups for work, friends, family, activities, and more, and easily keep in touch via email or SMS. Save time by creating reusable templates for group emails and group texts you frequently send. 10 reasons to download the Contact Groups app: - Easily create and manage contact groups - Send group texts and group emails - Create reusable templates for frequently sent group emails and SMS - Choose what number or email address to use for each contact - Have the app remember preferred phone numbers or email addresses - Share groups of contacts by text, email, and more - Delete multiple contacts at the same time - A simple, intuitive, and beautiful design - Your contacts are 100% safe and never uploaded to a server - Highly rated with an average of 4.5 stars Download it now and give it a try! REAL REVIEWS FROM REAL USERS "Very clean and easy to use app. Up and running in no time. I upgraded to the paid option as I often have groups larger than 10, but the free option is a no brainer. Highly recommend." "I highly recommend this app to anyone. Great tool!" "Probably the best app out there for saving groups." "I had about 600 contacts to delete and this app saved me so much time which is why I’ve given it 5 stars." "The best part of app is the customer service. They were incredible." Contact Groups Pro: The Pro version of Contact Groups can be purchased via an annual subscription to remove ads, create unlimited groups, select unlimited contacts, create unlimited templates, add more than 10 contacts per group, and remember group preferences. Payment will be charged to your Apple ID account at the confirmation of purchase. The subscription automatically renews every year unless it is canceled at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours prior to the end of the current period. You can manage and cancel your subscriptions by going to your App Store account settings after purchase. Terms of use: https://www.sixstarapps.com/terms/ Privacy policy: https://www.sixstarapps.com/privacy/ HAVE QUESTIONS OR NEED HELP? If you have any question about the app, or need help about something, please do not hesitate to contact us at www.SixStarApps.com. We’ll be happy to help!

Screenshots

Second Line Calling/Texting4 screens
Contact Groups4 screens

Verdict

The call

The clearest difference is ads: Second Line Calling/Texting at none against Contact Groups's shown. Second Line Calling/Texting also leads on review sentiment (68% vs 49%). Contact Groups's advantage is rating (4.6 vs 4.2) and iOS requirement (13.0 vs 15.6). On price, ratings volume, update cadence and in-app purchases 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 Line Calling/Texting sells 8 in-app purchases, starting at $9.99 per month and Contact Groups sells 3 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Contact Groups holds the better App Store score, 4.6 against 4.2. Both are backed by a comparable volume of ratings — 2.2K and 4.2K respectively. Written reviews complicate that: 68% of Second Line Calling/Texting's written reviews are positive against 49% of Contact Groups's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 21, 2026 and October 23, 2026 respectively.

Scorecard4 real differences · 6 level
Second Line Calling/Texting versus Contact Groups: the parameters behind the verdict, then further details
ParameterSecond Line Calling/TextingContact Groups
PriceFreeFree
Rating4.2 (2.2K ratings)4.6 (4.2K ratings) — better
Positive reviews67.6% of reviews — better49.1% of reviews
Number of ratings2.2K4.2K — better
Update frequencyEvery 2 monthsEvery 2 months
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.613.0 — better
Further details — not scored
Size11 MB8 MB
Age rating4+4+
DeveloperBinaryPatternNew Marketing Lab, Inc

Customer experience

Second Line Calling/Texting

All ratings2,047 ratings
Positive77.6%
Neutral8.1%
Negative14.3%
Written reviews111 reviews
Positive67.6%
Neutral6.3%
Negative26.1%

Contact Groups

All ratings4,201 ratings
Positive90.4%
Neutral4.0%
Negative5.6%
Written reviews167 reviews
Positive49.1%
Neutral6.6%
Negative44.3%

User reviews

Second Line Calling/Texting

From 2.2K App Store ratings

What we love

  • 👍 Easy and convenient
  • 🚀 Fast setup
  • 🔒 Flexible and secure
  • 💰 Good value for money
  • 📱 User-friendly interface

Room to improve

  • 🐛 Occasional technical issues
  • 🔍 Limited customer support
  • 💸 Expensive premium plans
  • 🔌 Unreliable call/text functionality

Contact Groups

From 4.2K App Store ratings

What we love

  • 👍 Easy to use
  • 🚀 Convenient for group messaging
  • 💡 Helpful for deleting contacts
  • 🚀 Effective for sending group texts/emails
  • 👍 Clean and intuitive interface

Room to improve

  • 🐛 Crashes and glitches
  • 🔒 Concerns about data privacy
  • 🔒 Deleted contacts not recoverable
  • 🔒 Unreliable group messaging functionality
  • 💰 Expensive subscription model

Bugs and requests

Second Line Calling/Texting

Reported bugs

4 issues
  • Dropped calls
  • Failed message deliveries
  • Disappearing contacts
  • Billing/subscription problems

Requested features

4 requests
  • Ability to send images/videos
  • More free credits/minutes
  • Improved customer support channels
  • Compatibility with newer OS versions

Contact Groups

Reported bugs

4 issues
  • Contacts randomly disappearing from groups
  • Inability to send messages to full group
  • Contacts being deleted from device and iCloud
  • App freezing and crashing during use

Requested features

5 requests
  • Allow editing of contact groups
  • Sync groups across devices
  • Ability to attach photos/files in group messages
  • Option to sort contacts by last name
  • Improve contact selection and deletion process

In-app purchases

8 purchases

Second Line Calling/Texting

Subscriptions3
  • Premium Line$9.991 Month
  • Premium Number Plan3 Days trial$9.991 Month
  • Premium Number Plan Upgrade$9.991 Month
One-time5
  • 3 Coin Pack$2.99
  • 8 Coin Pack$5.99
  • 15 Coin Pack$9.99
Show 2 more
  • 25 Coin Pack$13.99
  • 60 Coin Pack$27.99
3 purchases

Contact Groups

Subscriptions2
  • Contact Groups Pro (monthly)$4.991 Month
  • Contact Groups Pro (annual)$7.991 Year
One-time1
  • Contact Groups Pro (lifetime)$14.99

Questions

Is Second Line Calling/Texting free?
Second Line Calling/Texting is free to download, with in-app purchases available.
Is Contact Groups free?
Contact Groups is free to download, with in-app purchases available.
Which has better reviews, Second Line Calling/Texting or Contact Groups?
Contact Groups is rated higher. Second Line Calling/Texting averages 4.2 out of 5 from 2.2K ratings, while Contact Groups averages 4.6 from 4.2K ratings.
Do Second Line Calling/Texting or Contact Groups have ads?
Contact Groups shows ads; Second Line Calling/Texting does not.
Which is updated more often, Second Line Calling/Texting or Contact Groups?
Second Line Calling/Texting ships an update every 2 months, and Contact Groups every 2 months. Most recently, Second Line Calling/Texting was updated on October 21, 2026 and Contact Groups on October 23, 2026.

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