Comparison

Call.com vs UUUSIM

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

Head to head
About

Call.com

Get a real virtual phone number on your device without needing a new SIM card. Make calls, send texts, and have HD video calls with a dedicated second line for work, travel, or personal use. Manage multiple numbers and stay connected globally.

Highlights
  • Virtual second phone number
  • Voice and HD video calls
  • SMS messaging
  • Manage multiple numbers
  • Personalized voicemail
  • Call and SMS forwarding
  • Availability controls
Features
Read full description

Your second phone number in an app. A real virtual number you can use on any device — no SIM cards, no extra phones. Call.com gives you a dedicated second line for work, travel, or personal use. Choose a local number in the US, UK, France, Canada, Mexico, Australia, Austria, Belgium, Finland, and Puerto Rico, with more countries coming soon. VOICE CALLS Make crystal-clear calls to mobiles and landlines worldwide at low rates. Call other Call.com users for free. SMS Send affordable SMS messages to any mobile number in the world. VIDEO CALLS One-to-one or group HD video calls with up to 10 participants. Free between Call.com users. CHAT & VOICE MESSAGES Full-featured chat with support for images, files, emojis, and voice messages. WHO IT'S FOR — Freelancers & Small Business: A dedicated work line to separate business and personal communication. Project a professional image with a local number. — Remote Teams: Shared company credit, flexible billing, and the ability to reassign numbers between team members in one click. — Expats & Digital Nomads: Keep a local number in your home country while living abroad. Friends, family, and banks can reach you without international charges. — International Travellers: Connect over Wi-Fi and avoid expensive roaming fees. — International Callers: Stay in touch with friends and family overseas at affordable rates. — Coaches & Teachers: Communicate with students and clients on a dedicated number with flexible availability settings. — Property Managers & Hosts: A separate line for guest and client inquiries across multiple listings. — Tablet & Laptop Users: Turn any device into a fully functioning phone — no physical SIM required. MANAGE MULTIPLE NUMBERS Add more than one virtual number and manage them all from a single app. Each number comes with its own voicemail, availability schedule, and call controls. FEATURES — Personalized voicemail for each number — Call and SMS forwarding — Advanced availability controls and quiet hours — Block unwanted calls and messages — Send SMS to multiple contacts at once — Synchronized contacts across all your devices — Remote logout for account security — Login activity monitoring — Number porting — transfer an existing number to Call.com LOW INTERNATIONAL RATES Affordable calls and SMS to hundreds of destinations. Transparent pricing visible in the app before you call or send a message. USE ON MULTIPLE DEVICES Your calls, messages, and contacts stay synchronized across your devices. Trusted by over 1,000,000 users worldwide. Built in Europe. For support, contact our team directly in the app or email support@call.com

About

UUUSIM

This app utilizes Bluetooth to enable your device to send and receive text messages, make phone calls, and access the internet. It leverages Bluetooth technology for seamless connectivity and functionality.

Highlights
  • Send and receive text messages via Bluetooth
  • Make phone calls through Bluetooth
  • Access 4G internet using Bluetooth
  • Utilizes Bluetooth standard protocol
Features
Read full description

UUU SIM is a Bluetooth standard protocol software that communicates with devices through a mobile phone's Bluetooth connection. You can use the app software to make phone calls and send and receive text messages through the SIM card on the device. UUU SIM devices also provide hotspot connections.

Screenshots

Call.com4 screens
UUUSIM4 screens

Verdict

The call

The clearest difference is rating: Call.com at 4.6 against UUUSIM's 2.1. Call.com also leads on ratings volume (821 vs 17). UUUSIM's advantage is in-app purchases (none vs 33). On price, review sentiment, update cadence and ads 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. Call.com sells 32 one-off in-app purchases. UUUSIM asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Call.com holds the better App Store score, 4.6 against 2.1. That said, the two scores are not equally well evidenced: Call.com has 821 ratings behind it against 17, so its average is the more settled of the two. Written reviews point the same way: 39% of Call.com's written reviews are positive against 33% of UUUSIM's.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 2 weeks. The most recent releases landed on October 27, 2026 and October 22, 2026 respectively.

Scorecard4 real differences · 6 level
Call.com versus UUUSIM: the parameters behind the verdict, then further details
ParameterCall.comUUUSIM
PriceFreeFree
Rating4.6 (821 ratings) — better2.1 (17 ratings)
Positive reviews38.6% of reviews — better33.3% of reviews
Number of ratings821 — better17
Update frequencyEvery 2 weeksEvery 2 weeks
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPadiPhone, iPod
Requires iOS16.415.6 — better
Further details — not scored
Size77 MB8 MB
Age rating4+4+
DeveloperCall.com Telecom卫英 梁

Customer experience

Call.com

All ratings800 ratings
Positive90.3%
Neutral3.9%
Negative5.9%
Written reviews70 reviews
Positive38.6%
Neutral5.7%
Negative55.7%

UUUSIM

All ratings10 ratings
Positive20.0%
Neutral10.0%
Negative70.0%
Written reviews30 reviews
Positive33.3%
Neutral13.3%
Negative53.3%

Bugs and requests

Call.com

Reported bugs

15 issues
  • In-app purchase not available
  • System server very bad, loading time out
  • Cannot log in to account
  • Numbers scramble when making calls
  • Error: 'sorry something went wrong, please try again' when making calls
Show 10 more
  • Logged out and purchased number disappeared after update
  • Fails KYC verification without explanation
  • Error: 'fetch credit products error'
  • App not logging in, says number is wrong
  • Internal server error / unable to fetch payment data
  • App not opening after migration from Cloud SIM
  • Calls cut off after a few seconds
  • Slow connection and calls disconnect after a few minutes
  • Cannot get through to numbers
  • Dropped SMS messages

Requested features

5 requests
  • Add ability to send/receive pictures and video
  • Add more country options for numbers
  • Improve UI for handling multiple numbers
  • Allow default number selection
  • Enable in-app purchases via App Store

UUUSIM

Not enough reviews yet to summarise bugs or requests.

In-app purchases

32 purchases

Call.com

One-time32
  • Add £1.39$1.99
  • Add $1.39$1.99
  • Add €1.39$1.99
Show 29 more
  • Add €3.49$3.99
  • kr 50,00 Credit$3.99
  • €5,00 Credit$4.00
  • $4.99 Credit$4.99
  • Add £3.49$4.99
  • Add $3.49$4.99
  • £5.00 Credit$5.00
  • $5.00 Credit$5.00
  • 3 Month Subscription$5.99
  • $6.99 Credit$6.99
  • 1 Month Subscription$6.99
  • 3 Month Subscription$6.99
  • kr 100,00 Credit$7.99
  • €10,00 Credit$9.00
  • $9.99 Credit$9.99
  • 3 Month Subscription$9.99
  • Add €8.49$9.99
  • $10.00 Credit$10.00
  • Add £8.49$11.99
  • Add $8.49$11.99
  • 3 Month Subscription$15.99
  • 12 Month Subscription$15.99
  • 12 Month Subscription$16.99
  • $19.99 Credit$19.99
  • 3 Month Subscription$19.99
  • $24.99 Credit$24.99
  • 12 Month Subscription$24.99
  • 12 Month Subscription$39.99
  • 12 Month Subscription$49.99
None

UUUSIM

No in-app purchases

Questions

Is Call.com free?
Call.com is free to download, with in-app purchases available.
Is UUUSIM free?
UUUSIM is free to download, with no in-app purchases.
Which has better reviews, Call.com or UUUSIM?
Call.com is rated higher. Call.com averages 4.6 out of 5 from 821 ratings, while UUUSIM averages 2.1 from 17 ratings.
Do Call.com or UUUSIM have ads?
Neither Call.com nor UUUSIM shows ads.
Which is updated more often, Call.com or UUUSIM?
Call.com ships an update every 2 weeks, and UUUSIM every 2 weeks. Most recently, Call.com was updated on October 27, 2026 and UUUSIM on October 22, 2026.

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