Comparison

CrazyPhone vs Second Phone Number

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

Head to head
About

CrazyPhone

Communicate with your existing account using this app. It offers free calling and texting between users, along with free file sharing capabilities. Enjoy seamless communication without additional costs.

Highlights
  • Free calling between app users
  • Free texting
  • Free file sharing
  • Utilizes existing account
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Make and Receive calls with Crazytel with your existing account. Our Application supports the existing Crazytel features in addition of: • Free Calling between App users • Free texting • Free file sharing

About

Second Phone Number

Features
Read full description

You can have up to 4 real additional phone numbers on your mobile. For both incoming and outgoing Calls & SMS. Choose from UK, US, Canada, Poland & France virtual numbers. Make high-quality international calls to both mobiles and landlines for next to nothing. We offer low cost calling rates for calls or text SMS. 2nd SIM allows you to choose your connection type and set up your call via either local access, mobile data or WIFI. This means you never have to worry about bad reception or your call dropping. A second phone number for freelancer, Dating, Business, Online, Gumtree, & other use Free text chat between Apple phones worldwide while using WIFI or data, share pictures. No matter where you or your contacts live! You’ll get these multiple numbers without any additional or roaming charges. ======================================================================== KEY FEATURES • Get a 2nd number without changing your SIM card, device, or mobile network provider • Low-cost International Calls & SMS • Free Calls & Texts • Use multiple international virtual numbers at a time • Receive texts and calls to your new number • Send SMS and make calls from your dedicated number • Easy to make and switch between virtual number profiles when calling • Dedicated voicemail for each separate mobile number • Complete control of your mobile identity • In-app purchases and secret messaging feature available • 2nd SIM is free to download Now it’s easy for you to have multiple numbers with '2nd SIM' app. You can keep your primary contact private and use these low costs, roaming free virtual numbers for dating or selling on eBay or any kind of business purpose where you want to hide your own number. With “2nd SIM”, you can call or text chat with other 2nd SIM users and low-cost text SMS or calls to anyone worldwide. Take advantage of in-app purchases and buy multiple virtual numbers (up to 4). In short, 2nd SIM app can deliver: A disposable number A temporary/permanent number A second phone number for travel A second mobile phone number for business use Disposable phone numbers for online ad listings Make low cost, roaming free calls Call landlines and mobiles in the United States, the United Kingdom, Canada, France, Nigeria, the United Arab Emirates, Saudi Arabia, Egypt, Oman, India, Philippines, Australia, New Zealand, and 200 more countries and territories. “2nd SIM - is a must-have app on your Apple device if you want to make free & cheap international calls. 2nd SIM App gives a perfect international roaming free calling and SMS experience. Have fun! Please leave us a review and rating to let us know what you think about 2nd SIM - Second Phone Number. We’ll use your feedback to make your experience better next time. Thanks!

Screenshots

CrazyPhone4 screens
Second Phone Number4 screens

Verdict

The call

The clearest difference is in-app purchases: CrazyPhone at none against Second Phone Number's 10. Second Phone Number's advantage is update cadence (weekly vs every 4 months) and iOS requirement (13.4 vs 16.0). 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 Number sells 10 one-off in-app purchases. CrazyPhone asks for nothing beyond the download.

UpkeepUpdate frequency

CrazyPhone ships an update every 4 months, Second Phone Number weekly. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

Scorecard3 real differences · 7 level
CrazyPhone versus Second Phone Number: the parameters behind the verdict, then further details
ParameterCrazyPhoneSecond Phone Number
PriceFreeFree
Rating2.0 (1 ratings) — better—
Positive reviews52.9% of reviews—
Number of ratings1 — better—
Update frequencyEvery 4 monthsWeekly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhoneiPhone, iPod — better
Requires iOS16.013.4 — better
Further details — not scored
Size115 MB28 MB
Age rating17+4+
DeveloperCRAZY TELECOMMUNICATIONS PTY LTD2ND SIM Limited

In-app purchases

None

CrazyPhone

No in-app purchases

10 purchases

Second Phone Number

One-time10
  • €1.69$1.99
  • €1.99$1.99
  • $1.49$1.99
Show 7 more
  • €2.49$2.99
  • €4.49$4.99
  • $4.99$4.99
  • Virtual Number$4.99
  • $5.00$5.00
  • €7.49$7.99
  • €10.49$9.99

Questions

Is CrazyPhone free?
CrazyPhone is free to download, with no in-app purchases.
Is Second Phone Number free?
Second Phone Number is free to download, with in-app purchases available.
Do CrazyPhone or Second Phone Number have ads?
Neither CrazyPhone nor Second Phone Number shows ads.
Which is updated more often, CrazyPhone or Second Phone Number?
CrazyPhone ships an update every 4 months, and Second Phone Number weekly. Most recently, CrazyPhone was updated on November 3, 2026 and Second Phone Number on October 30, 2026.

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