Comparison

FusionSIP vs Infinity

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

Head to head
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.

About

Infinity

This app provides Unified Communications by extending VoIP functionality to mobile devices. Users can maintain a consistent identity for calls, manage contacts, voicemail, and call history from one place. It also allows for efficient communication through answering rules, greetings, and presence management.

Highlights
  • Unified Communications solution
  • VoIP functionality on mobile
  • Maintain same identity across devices
  • Contact management
  • Voicemail and call history
  • Answering rules and presence management
Features
Read full description

Infinity - 1st Call is a SIP softclient that extends VoIP functionality beyond the land line or desktop, bringing features of the platform directly to end user's mobile devices as a Unified Communications solution. With Infinity, users are able to maintain the same identity when making or receiving calls from any location, regardless of device. Infinity also grants users the ability to manage contacts, voicemail, call history and configurations in a single location. This includes the management of answering rules, greetings and presence which all contribute to more efficient communication.

Screenshots

FusionSIP4 screens
Infinity3 screens

Verdict

The call

The clearest difference is update cadence: FusionSIP at every 2 weeks against Infinity's every 29 months. FusionSIP also leads on iOS requirement (15.0 vs 17.0). 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

FusionSIP ships an update every 2 weeks, Infinity every 29 months. The most recent releases landed on September 15, 2026 and June 5, 2026 respectively.

Scorecard2 real differences · 7 level
FusionSIP versus Infinity: the parameters behind the verdict, then further details
ParameterFusionSIPInfinity
PriceFreeFree
Rating—5.0 (1 ratings) — better
Number of ratings—1 — better
Update frequencyEvery 2 weeks — betterEvery 29 months
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better17.0
Further details — not scored
Size11 MB121 MB
Age rating4+17+
DeveloperEDNT GmbH1st Call

In-app purchases

None

FusionSIP

No in-app purchases

None

Infinity

No in-app purchases

Questions

Is FusionSIP free?
FusionSIP is free to download, with no in-app purchases.
Is Infinity free?
Infinity is free to download, with no in-app purchases.
Do FusionSIP or Infinity have ads?
Neither FusionSIP nor Infinity shows ads.
Which is updated more often, FusionSIP or Infinity?
FusionSIP ships an update every 2 weeks, and Infinity every 29 months. Most recently, FusionSIP was updated on September 15, 2026 and Infinity on June 5, 2026.

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