Comparison

Flash 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

Flash Number

Create disposable phone numbers to protect your personal number for business, online sales, or dating. Enjoy secure, encrypted communication with features like call rerouting, texting with images, and voicemail. Offers a free trial with flexible subscription and credit plans.

Highlights
  • Disposable phone numbers
  • Call rerouting
  • Texting with images
  • Voicemail support
  • Block/unblock numbers
  • Flexible notification control
Features
Read full description

Do you want to have an alternative to protect your personal phone number? Would you like to have a business that needs multiple phone numbers to work with? Then, Flash Number is here for you.  You may create one or multiple disposable phone numbers for business, dating, or buying and selling items on second-hand marketplaces like Craigslist, Offerup, Letgo, and Facebook Marketplace. Unlike other apps that use fake numbers with spamming calls, showing you ads and selling your data, we treat your privacy and security as our #1 priority. All texts are encrypted and secured on the server-side. The numbers may be deleted at any time.   Flash Number starts with a free-to-use number for 7 days. After that, you may continue to use the number by choosing a plan that suits you. You may also purchase multiple numbers at the same time.   FEATURES Flash Number is a fully-featured second phone number app the followings: • Incoming calls to Flash Number is rerouted to your cell phone without exposing your real personal number. • Sending and receiving texts with images. • Voicemail support. • Block & unblock incoming numbers. • Mute and unmute. When the Flash number is muted, it no longer rings. • Flexible notification control for incoming text and phone numbers. • Recycle the number at any time.   PLANS There are two types of plans, Credits and Subscriptions. Both have an unlimited number of texts and calls. The Credit plan has an expiration time while the Subscription plan does not as long it is active. Subscriptions automatically billed monthly or annually to your iTunes Account and auto-renew, unless you turn off auto-renew at least 24-hours before the end of the current period.  Payment will be charged to iTunes Account at confirmation of purchase. Here are the variations: • Monthly Subscription - $4.49/month • Yearly Subscription - $47.99/year (Huge discount with original price $59.88) • Credit - $4.99 for 30 days. The number will be recycled if it is not manually renewed.     IMPORTANT INFORMATION: Not for 911 emergency services. May not work with SMS shortcode services. Works in the US and Canada only.   Terms & Conditions: http://www.flashnumberapp.com/terms-conditions.html Privacy Policy: http://www.flashnumberapp.com/privacy-policy.html COPYRIGHT © 2020 Lubap LLC. All rights reserved. The Flash Number name, associated trademarks, and logos are trademarks of Lubap LLC or related entities.

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

Flash Number4 screens
Second Phone Number²4 screens

Verdict

The call

The clearest difference is review sentiment: Flash Number at 51% against Second Phone Number²'s 0%. Flash Number also leads on ratings volume (173 vs 7) and iOS requirement (10.3 vs 16.0). Second Phone Number²'s advantage is update cadence (weekly vs every 3 months) and rating (4.4 vs 4.1). On price, ads, in-app purchases and monetization model 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. Flash Number sells 4 in-app purchases, starting at $4.49 per month and Second Phone Number² sells 10 in-app purchases, starting at $5.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Second Phone Number² holds the better App Store score, 4.4 against 4.1. That said, the two scores are not equally well evidenced: Flash Number has 173 ratings behind it against 7, so its average is the more settled of the two. Written reviews complicate that: 51% of Flash Number's written reviews are positive against 0% of Second Phone Number²'s, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Flash Number ships an update every 3 months, Second Phone Number² weekly. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.

Scorecard5 real differences · 5 level
Flash Number versus Second Phone Number²: the parameters behind the verdict, then further details
ParameterFlash NumberSecond Phone Number²
PriceFreeFree
Rating4.1 (173 ratings)4.4 (7 ratings) — better
Positive reviews51.4% of reviews — better0.0% of reviews
Number of ratings173 — better7
Update frequencyEvery 3 monthsWeekly — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPodiPhone, iPad
Requires iOS10.3 — better16.0
Further details — not scored
Size69 MB19 MB
Age rating4+4+
DeveloperPATRICKGOLD MICROFINANCE BANK LIMITEDAppios Bilisim

Customer experience

Flash Number

All ratings180 ratings
Positive78.9%
Neutral2.8%
Negative18.3%
Written reviews74 reviews
Positive51.4%
Neutral4.1%
Negative44.6%

Second Phone Number²

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

Bugs and requests

Flash Number

Reported bugs

12 issues
  • App crashes immediately upon launch
  • Outgoing calls non-functional despite incoming calls working
  • Request failed with status code 429 errors
  • Cannot create account or number despite valid phone number
  • Login failures after app reinstallation
Show 7 more
  • Call disconnections and dropped calls mid-conversation
  • Missing or non-functional notifications for texts and calls
  • Texts not sending despite appearing to be composed
  • Service stops working after iOS updates
  • Subscription expires unexpectedly without user cancellation
  • Cannot receive videos from contacts
  • Accepts non-10-digit phone numbers causing issues

Requested features

5 requests
  • Extended trial period before requiring payment
  • Points or rewards system for service usage
  • Video message support
  • Improved notification system for incoming messages
  • Better compatibility with latest iOS versions

Second Phone Number²

Not enough reviews yet to summarise bugs or requests.

In-app purchases

4 purchases

Flash Number

Subscriptions3
  • Unlimited calls & SMS3 variants$4.491 Month
  • Unlimited calls & SMS$4.991 Month
  • Unlimited calls & SMS4 variants$47.991 Year
One-time1
  • Unlimited calls & SMS$4.99
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 Flash Number free?
Flash Number is free to download, with in-app purchases available.
Is Second Phone Number² free?
Second Phone Number² is free to download, with in-app purchases available.
Which has better reviews, Flash Number or Second Phone Number²?
Second Phone Number² is rated higher. Flash Number averages 4.1 out of 5 from 173 ratings, while Second Phone Number² averages 4.4 from 7 ratings.
Do Flash Number or Second Phone Number² have ads?
Neither Flash Number nor Second Phone Number² shows ads.
Which is updated more often, Flash Number or Second Phone Number²?
Flash Number ships an update every 3 months, and Second Phone Number² weekly. Most recently, Flash Number was updated on November 3, 2026 and Second Phone Number² on November 4, 2026.

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