Comparison

Second Line Calling/Texting vs Insta Caller

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

Insta Caller

This app provides a secondary phone number for enhanced privacy, allowing you to separate personal and professional communications. It enables high-definition, stable calls and texts to over 100 countries worldwide without needing a physical SIM card.

Highlights
  • Protect real phone number
  • Add a second phone number
  • Unlimited calls and texting
  • Low-cost international calls
  • High-definition sound quality
  • Works on iPod, iPad, and iPhone
Features
Read full description

Call hundreds of countries around the world, high-definition sound quality, stable call and text. ADD 2nd PHNOE NUMBER as your personal number so taht you can separate your work and life. It integrates global calls, domestic calls, voice callings, international SMS etc. Take the front-end technology, the call quality is high-definition, the other party no need to install, and immediately make a global call. It’s fast, reliable and convenient. ==========Features========== ◆ Protect your real phone number ◆ Unlimited calls & texting ◆ Low cost international call- support to make 100+ global country calls ◆ Support dialing quickly, chat for a whole day ========== Advantage ========== -GLOBAL PHONE Call hundreds of countries around the world, high-definition sound quality, stable call and text. -PROECT YOUR REAL NUMBER We will add 2nd number for you so that you can protect your real phone number if you don’t want to show it to others. Moreover, you can completely separate your work and life . -CHEAP INTERNATIONAL CALLS Calling and texting by WIFI. You can send messages as many as you want! And you don't have to worry about the phone line and suddenly disconnect. It will be fine for chatting a whole day. -NO NEED TO INSERT A TELEPHONE CARD International calls have no network restrictions and support 3G/4G/5G/WIFI -SAFE AND RELIABLE Protect your private calls and encrypt your personal information. -SUPPORT FAST DIAL Create your private address book,quickly make online calls worldwide. -TURN YOUR IPOD OR IPAD INTO A PHONE Works on your iPod Touch, iPad, and iPhone. Title of Service:Phone Number Premium Subscription. Length of Subscription: 1 week. You will be a Premium user with the auto-renewing subscription. You can cancel the subscription at anytime if you don’t want to subscribe. $9.99 for 1 month. and it will auto renew after trial. Payment will be charged to iTunes Account at confirmation of purchase. Subscription will automatically renew unless it is turned off at least 24 hours before the end of the current billing period. Account will be charged for renewal within 24-hours prior to the end of the current period. You can edit your subscriptions and auto-renewal may be turned off by going to “Account Settings”. 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. Privacy Policy: https://arescrowd.com/InstaCaller/html/privacy_policy.html Terms of Service: https://arescrowd.com/InstaCaller/html/terms_of_service.html

Screenshots

Second Line Calling/Texting4 screens
Insta Caller4 screens

Verdict

The call

The clearest difference is ads: Second Line Calling/Texting at none against Insta Caller's shown. Insta Caller's advantage is rating (4.4 vs 4.2) and review sentiment (80% vs 68%). 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 Insta Caller sells 10 in-app purchases, starting at $2.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Insta Caller holds the better App Store score, 4.4 against 4.2. Both are backed by a comparable volume of ratings — 2.2K and 948 respectively. Written reviews point the same way: 68% of Second Line Calling/Texting's written reviews are positive against 80% of Insta Caller's.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on November 6, 2026 and November 11, 2026 respectively.

Scorecard3 real differences · 7 level
Second Line Calling/Texting versus Insta Caller: the parameters behind the verdict, then further details
ParameterSecond Line Calling/TextingInsta Caller
PriceFreeFree
Rating4.2 (2.2K ratings)4.4 (948 ratings) — better
Positive reviews67.6% of reviews80.3% of reviews — better
Number of ratings2.2K — better948
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 iOS15.615.0 — better
Further details — not scored
Size11 MB60 MB
Age rating4+4+
DeveloperBinaryPatternChuangbohui (Shenzhen) Technology Service Co., Ltd.

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%

Insta Caller

All ratings951 ratings
Positive84.9%
Neutral3.8%
Negative11.4%
Written reviews71 reviews
Positive80.3%
Neutral1.4%
Negative18.3%

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

Insta Caller

From 948 App Store ratings

What we love

  • ⭐ Awesome app
  • 🙌 Great free texting and calling
  • 💰 Saves money on communication costs
  • 📱 Useful for having a second number

Room to improve

  • 💰 Excessive charges and in-app purchases
  • 🚫 Incoming calls and SMS don't work
  • 🐛 Buggy and unreliable
  • 🤔 Questionable business practices

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

Insta Caller

Reported bugs

3 issues
  • Frequent crashes and app failures
  • Inability to send/receive messages and calls as advertised
  • Accounts being disabled or deactivated without explanation

Requested features

3 requests
  • Improve reliability of calling and texting features
  • Provide more transparent pricing and subscription options
  • Implement better customer support and issue resolution

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
10 purchases

Insta Caller

Subscriptions5
  • InstaCaller First Week Deal7 Days trial$2.997 Days
  • InstaCaller monthly plan3 Days trial$7.997 Days
  • The Monthly Deal (+100coins)1 Month trial$9.991 Month
Show 2 more
  • One month vip (free trial)1 Month trial$9.991 Month
  • Three month vip7 Days trial$19.993 Months
One-time5
  • Reselect a new number$2.99
  • 200 Coins$3.89
  • 500 Coins$5.99
Show 2 more
  • 1200 Coins$9.99
  • 2500 Coins$16.99

Questions

Is Second Line Calling/Texting free?
Second Line Calling/Texting is free to download, with in-app purchases available.
Is Insta Caller free?
Insta Caller is free to download, with in-app purchases available.
Which has better reviews, Second Line Calling/Texting or Insta Caller?
Insta Caller is rated higher. Second Line Calling/Texting averages 4.2 out of 5 from 2.2K ratings, while Insta Caller averages 4.4 from 948 ratings.
Do Second Line Calling/Texting or Insta Caller have ads?
Insta Caller shows ads; Second Line Calling/Texting does not.
Which is updated more often, Second Line Calling/Texting or Insta Caller?
Second Line Calling/Texting ships an update every 2 months, and Insta Caller every 2 months. Most recently, Second Line Calling/Texting was updated on November 6, 2026 and Insta Caller on November 11, 2026.

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