Comparison

Fixed Line vs FusionSIP

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

Head to head
About

Fixed Line

Transform your smartphone into a mobile extension of your virtual PBX. Make and receive calls worldwide using your landline number, accessing all your PBX features on the go. This app requires an active Fixed Line System account to function.

Highlights
  • Mobile PBX extension
  • Worldwide landline calls
  • Account management
  • Full telephony features
  • Contact list integration
  • Call journal
  • Team view & presence
  • Chat and group chat
Features
Read full description

The mobile fixed line is a modern communication service from the pioneer and technology leader in the field of unified communication - UNICOPE. Get your telephone system to your phone. With this app you can use your smartphone as a mobile extension of your virtual PBX. Start and receive worldwide calls with your landline number so that you can telephone cost-efficient and mobile with UNICOPE. Take advantage of the functions of your PBX and all the features of Fixed Line. ++ Note: The Fixed Line-app only works in combination with an active account on the Fixed Line System. ++ TOP-Features: Account management - Accounts are automatically created by autoprovisioning - Add, edit and delete accounts All telephony features - Answer, hang up, consultation, hold, transfer, and connect - Phone-conference - Dial by number - Dial from contact list - Dial from call journal - Dial from team view - Dial from chat - Dial with Mobile Network (GSM) - Call mute, switch to speaker - Call signaling by sound and vibration - Number resolution incl. contact image from local contacts - Number resolution from PBX contacts Contact list - Displaying local contacts - Call and email from contact details - Access to server address book - search function Call journal - Display all calls (combined with landline) - Contacts resolution - Call and contact details - Filter for all or only missed calls Team View - Favorites - All employees sorted by departments - call option in detail-view - possibility to send e-mails Messages (Chat) - Conversation overview - Send and receive chat messages - Group Chat Presence - See the presence of all your colleagues General - Copy-Feature for almost data - Diverse DND Modes - GSM Mode - Callthrough-Mode

About

FusionSIP

Features
Read full description

FusionSIP: The Mobile SIP Client for FusionPBX FusionSIP is the ideal mobile solution for users of the open-source FusionPBX phone system. Simple, flexible, and powerful - FusionSIP keeps you perfectly connected on the go. Highlights: Easy Setup: Configure via QR code or manual SIP data entry. Seamless Integration: Direct connection to FusionPBX via the EDNT Softphone API, which provides all necessary data. Cutting-Edge Technology: Supports push notifications, IPv4, and IPv6. Powerful Features: Extension selection Hold, call switching, and call forwarding (unattended & attended) Conference calling BLF and status display for colleagues Public and private phonebooks (local and server-based) Server-based call history, notes, and scheduling (private & public) Integrated chat (requires XMPP server) FusionPBX voicemail management Full fax support (send & receive) Manage call forwarding and block lists Customizable codecs, volume control, and Bluetooth support User-friendly design with Light & Dark Mode For Businesses & Offices: FusionSIP is also available in a desktop version, including interfaces to ERP and CRM systems. On request, the app can be custom-branded and tailored to your needs. Who is FusionSIP for? FusionSIP is specifically designed for businesses that use FusionPBX, providing a reliable, user-friendly solution for efficient communication—anytime, anywhere. For Resellers: Upon request, the softphone can be branded, customized, and discounted. Download now and experience the full power of FusionPBX in the palm of your hand! Important Note: The FusionSIP soft client can only be used in combination with the EDNT SoftPhone API and FusionPBX. For a generic softphone solution, EDNT offers the Smart-SIP-Phone, which works as a SIP client immediately with any PBX or phone system.

Screenshots

Fixed Line4 screens
FusionSIP4 screens

Verdict

The call

The clearest difference is update cadence: FusionSIP at every 2 weeks against Fixed Line's every 2 months. Fixed Line's advantage is iOS requirement (13.0 vs 15.0). 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

Fixed Line ships an update every 2 months, FusionSIP every 2 weeks. The most recent releases landed on June 24, 2026 and September 15, 2026 respectively.

Scorecard2 real differences · 8 level
Fixed Line versus FusionSIP: the parameters behind the verdict, then further details
ParameterFixed LineFusionSIP
PriceFreeFree
Rating5.0 (1 ratings) — better—
Positive reviews40.0% of reviews—
Number of ratings1 — better—
Update frequencyEvery 2 monthsEvery 2 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS13.0 — better15.0
Further details — not scored
Size34 MB11 MB
Age rating4+4+
DeveloperUNICOPE GmbHEDNT GmbH

In-app purchases

None

Fixed Line

No in-app purchases

None

FusionSIP

No in-app purchases

Questions

Is Fixed Line free?
Fixed Line is free to download, with no in-app purchases.
Is FusionSIP free?
FusionSIP is free to download, with no in-app purchases.
Do Fixed Line or FusionSIP have ads?
Neither Fixed Line nor FusionSIP shows ads.
Which is updated more often, Fixed Line or FusionSIP?
Fixed Line ships an update every 2 months, and FusionSIP every 2 weeks. Most recently, Fixed Line was updated on June 24, 2026 and FusionSIP on September 15, 2026.

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