Comparison

AustenTel ACS vs MTX Softphone

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

Head to head
About

AustenTel ACS

Manage your business phone system from your mobile device. Make and receive calls with your work extension, access transcribed voicemails, and message colleagues. Stay connected and productive wherever you are.

Highlights
  • Work extension on mobile
  • HD voice calls
  • Visual voicemail with transcription
  • Team messaging
  • Company directory
  • Call history sync
Read full description

AustenTel ACS puts your organization's phone system in your pocket. Make and receive calls with your work extension, check voicemail with automatic transcription, message teammates, and stay reachable wherever work takes you. ACS is the AustenTel Advanced Communication System — a carrier-grade, cloud-hosted business phone platform. The ACS app connects to your organization's ACS service, so your business extension rings your iPhone like a native call. FEATURES • Your work extension on your iPhone — incoming calls arrive like any other call, even when the app is closed • HD voice with secure signaling and media (TLS + SRTP) • Visual voicemail with automatic transcription • Team messaging with photo attachments • Company directory with live presence • Call history synced across your devices • Hold, transfer, and conference controls • Organization-wide instant alerts (where enabled by your admin) GETTING STARTED The ACS app is for organizations using AustenTel ACS phone service. Your administrator provisions your extension and sends you a setup code or QR — enter or scan it and you're connected. There is no self-serve account setup. Don't have ACS yet? Learn more at austentel.com or call 800.817.7845. The ACS app requires an active AustenTel ACS extension.

About

MTX Softphone

Read full description

Experience high-quality, reliable, and feature-rich communication with the MTX.Cloud VoIP Softphone app. Designed to enhance your calling experience, this app is your all-in-one solution for making and receiving calls over the internet. Apart from the typical functionalities, we're thrilled to introduce our free VOIP application that allows excellent free app-to-app calls. Enjoy high-definition conversations, secure chats —all at no charge. Key Features: Crystal-Clear Audio: Enjoy superior voice quality with HD audio technology, ensuring your conversations are always clear and understandable. Intuitive Interface: Our user-friendly interface makes it effortless to navigate through the app's features, enabling you to manage calls, contacts, and settings with ease. Seamless Integration: Connect with popular VoIP service providers and effortlessly sync your contacts for hassle-free calling. Our app seamlessly integrates with leading platforms such as MTX.Cloud, enabling you to stay connected wherever you are. Advanced Call Management: Take full control of your calls with a wide range of features, including call transfer, call waiting, and call hold. Never miss an important call again. Multi-Device Support: Access your VoIP softphone from multiple devices, including smartphones, tablets, and desktop computers, ensuring you're always reachable, regardless of your location. Secure and Private: Rest assured that your conversations are protected with state-of-the-art encryption protocols, ensuring the privacy and confidentiality of your calls. Customization Options: Personalize your softphone app with various themes and settings, allowing you to tailor the app to your preferences and enhance your user experience. Discover a new level of communication efficiency with the MTX.Cloud VoIP Softphone app. Download now and unlock a world of seamless calling experiences for both your personal and professional needs.

Screenshots

AustenTel ACS4 screens
MTX Softphone4 screens

Verdict

The call

The clearest difference is update cadence: AustenTel ACS at monthly against MTX Softphone's every 12 months. On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

AustenTel ACS ships an update monthly, MTX Softphone every 12 months. The most recent releases landed on November 12, 2026 and November 7, 2026 respectively.

Scorecard1 real difference · 9 level
AustenTel ACS versus MTX Softphone: the parameters behind the verdict, then further details
ParameterAustenTel ACSMTX Softphone
PriceFreeFree
Rating5.0 (3 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings3 — better—
Update frequencyMonthly — betterEvery 12 months
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhoneiPhone
Requires iOS17.016.0 — better
Further details — not scored
Size5 MB97 MB
Age rating4+4+
DeveloperAusten Consultants, LLCMTX CLOUD SERVICES LIMITED

In-app purchases

None

AustenTel ACS

No in-app purchases

None

MTX Softphone

No in-app purchases

Questions

Is AustenTel ACS free?
AustenTel ACS is free to download, with no in-app purchases.
Is MTX Softphone free?
MTX Softphone is free to download, with no in-app purchases.
Do AustenTel ACS or MTX Softphone have ads?
Neither AustenTel ACS nor MTX Softphone shows ads.
Which is updated more often, AustenTel ACS or MTX Softphone?
AustenTel ACS ships an update monthly, and MTX Softphone every 12 months. Most recently, AustenTel ACS was updated on November 12, 2026 and MTX Softphone on November 7, 2026.

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