Comparison

Callback Duocom vs SMSX

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

Head to head
About

Callback Duocom

Features
Read full description

Es una aplicación para realizar llamadas desde cualquier parte del mundo (callback) con las tarifas de llamadas internacionales más económicas (low cost) desde España o desde el extranjero. También puede grabar las llamadas salientes de forma gratuita. Descargue la aplicación Callback Duocom para llamar al extranjero evitando los costes extras del roaming internacional. Aproveche las ventajas de llamar a través de la App Callback Duocom. Realice las llamadas internacionales mostrando el número de teléfono de la empresa y ocultando su número de teléfono personal. Ventajas: * Puede elegir la máscara de llamadas entre los números de teléfonos virtuales activados (Número Virtual, Centralita Virtual, Fax Virtual) que desea mostrar en cada llamada. * Puede grabar las llamadas salientes. * Hacer llamadas al extranjero sin roaming internacional (con la SIM del país donde se encuentre). * Llamadas internacionales a bajo coste. * Compatible con todos los operadores. * Antes de realizar cualquier llamada puede ver el coste de minuto al destino seleccionado. Nos puede encontrar en: https://www.facebook.com/duocom.europe.sl https://twitter.com/duocom_es https://plus.google.com/+DuocomEs https://www.linkedin.com/company/duocom-europe-s-l https://www.youtube.com/user/DuocomEurope Esta es una aplicación solo para clientes de Duocom Europe S.L.

About

SMSX

Easily receive SMS verification codes without revealing your personal phone number. Choose virtual numbers from various countries to securely complete online account verifications and protect your privacy.

Highlights
  • Receive SMS verification codes
  • Use virtual numbers from different countries
  • Keep personal phone number private
  • Secure account verification
  • Simple usage-based pricing
  • Fast SMS delivery
Features
Read full description

Receiving SMS verification codes without sharing your personal phone number is now much easier. With the app, you can choose a virtual number from different countries and easily track the SMS verification code for the platform you need. When you do not want to use your personal number, you can complete account verification processes more securely with a virtual number. Simply select the country and service you want to receive SMS for. Key Features * Use virtual numbers for different services * Receive SMS quickly and view verification codes * A practical solution for SMS verification processes * Keep your real phone number private * Simple usage-based pricing * Activation is not completed if the code is not received How does it work? First, select the service and country you want to verify. Then, use the virtual number created for you to start the verification process on the relevant platform. When the SMS is sent, the SMS verification code will be displayed inside the app. This system provides an easy solution for account verification, temporary number needs, receiving SMS verification codes, and protecting your privacy on online services. It offers a simple, fast, and clear experience for users who want to receive SMS using a virtual number. Privacy Policy, Terms of Use, Eula: https://smsx.co/privacy-terms-eula.html

Screenshots

Callback Duocom4 screens
SMSX4 screens

Verdict

The call

The clearest difference is in-app purchases: Callback Duocom at none against SMSX's 5. Callback Duocom also leads on ads (none vs shown) and iOS requirement (8.0 vs 14). SMSX's advantage is update cadence (every 5 days vs every 5 months). On price 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. SMSX sells 5 one-off in-app purchases. Callback Duocom asks for nothing beyond the download.

UpkeepUpdate frequency

Callback Duocom ships an update every 5 months, SMSX every 5 days. The most recent releases landed on October 26, 2026 and October 31, 2026 respectively.

Scorecard4 real differences · 6 level
Callback Duocom versus SMSX: the parameters behind the verdict, then further details
ParameterCallback DuocomSMSX
PriceFreeFree
Rating—4.7 (7 ratings) — better
Positive reviews—80.0% of reviews
Number of ratings—7 — better
Update frequencyEvery 5 monthsEvery 5 days — better
AdsNo — betterYes
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS8.0 — better14
Further details — not scored
Size3 MB32 MB
Age rating4+4+
DeveloperDuocom Europe, S.L.WHITE CODE TEKNOLOJI LIMITED SIRKETI

In-app purchases

None

Callback Duocom

No in-app purchases

5 purchases

SMSX

One-time5
  • Virtual Number for Receive SMS$0.99
  • Receive Sms Online$4.99
  • Get Receive SMS$9.99
Show 2 more
  • Virtual Number$14.99
  • Get Virtual Number$99.99

Questions

Is Callback Duocom free?
Callback Duocom is free to download, with no in-app purchases.
Is SMSX free?
SMSX is free to download, with in-app purchases available.
Do Callback Duocom or SMSX have ads?
SMSX shows ads; Callback Duocom does not.
Which is updated more often, Callback Duocom or SMSX?
Callback Duocom ships an update every 5 months, and SMSX every 5 days. Most recently, Callback Duocom was updated on October 26, 2026 and SMSX on October 31, 2026.

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