Comparison

frSIP Mobile (Legacy Support) vs Skylar

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

Head to head
About

frSIP Mobile (Legacy Support)

This application allows users to make and receive calls on their office phone line directly from their mobile device. It enables enterprise mobility by pairing your phone with your office extension, allowing you to stay connected anywhere with Wi-Fi or cellular data. The app can run in the background and will ring when your office phone rings.

Highlights
  • Make and receive office calls on mobile
  • Pair mobile with office extension
  • Background call ringing
  • Use office line for outgoing calls
  • Enterprise mobility
Features
Read full description

The frSIP Mobile for iOS is a client software designed to work with any enterprise running frSIP UC 2.9.3 or above. Video calling is only available in frSIP UC 3.1 or above. This app provides enterprise mobility by enabling users to pair their mobile phone with their office extensions. You may make and receive calls on your office line right from your iOS device whenever you are connected to Wifi or 3G, 4G LTE. You may put this app in background mode and it will ring whenever your office phone rings. Outgoing calls placed on this app will be made via your office phone line. Take advantage of our mobility features and stay connected anytime, anywhere!

About

Skylar

This secure, standard-based mobile VoIP softphone offers high-quality calls over various networks. It features advanced call management, multi-account support, and intelligent network sensing for a smooth user experience.

Highlights
  • Advanced security settings
  • Intelligent network quality sensing
  • HD Wideband audio
  • Multi-tasking support
  • Multiple SIP account support
  • Call history and management
  • XMPP Messaging support
Features
Read full description

Skylar is a highly secured, standard-based mobile VoIP softphone that works over 3G, 4G and Wi-Fi networks. Skylar incorporates advanced security settings, which allow for secure calls. Skylar provides superb sound quality and smooth VoIP experience using it’s intelligent network quality sensing capability including Adaptive Jitter Buffer, Packet Lost Concealment, Noise Suppression, Automatic Resampling and Gain Control. Satellite network friendly special audio codec algorithm ensures smooth call experience through low bandwidth channels. Graphical live call statistics including network details helps to provide the best and quick customer support. Skylar is very flexible for branding, customization and licensing for service providers and enterprises. Please contact to sales@brotecs.com. IMPORTANT: Skylar softphone is a standalone SIP based VoIP client application and is not bundled with VoIP service. A SIP server or subscription with a SIP-based VoIP provider is required to make and receive VoIP calls. Key Features: * Multi-tasking support for background operation, such as receive incoming calls while using other applications. * SIP account specific DTMF configurable option: ability to enter numbers and use an auto attendant via RFC 2833 and Inband * Auto NAT type detection and NAT Traversal using STUN, TURN and ICE. * Using the device’s existing contact list, Skylar facilitates easy and effective communication management with an intuitive interface. * Automatically discover the server by using DNS SRV. * VPN Support * Advanced network quality detection for VoIP calls and live graphical statistics for individual call line. * Multiple account support for up to 50 accounts on any SIP-compliant server * Call history with a list of received, missed and dialed calls. * Speakerphone, mute and hold functions. * Dial Plan support for individual SIP account. * Multiple call support – swap between two active calls, merge and split calls, transfer calls (attended and unattended) * HD Wideband audio through G.722 codec. * Enhanced/Optimized OPUS codec support for low bandwidth network. * Audio codecs include G.722 (HD), G.729, G.711A/U (PCMA/PCMU), GSM and OPUS * Automatic codec selection to ensure optimal call quality * XMPP Support for Messaging For Support: skylar.support@brotecs.com

Screenshots

frSIP Mobile (Legacy Support)3 screens
Skylar4 screens

Verdict

The call

The clearest difference is rating: Skylar at 4.0 against frSIP Mobile (Legacy Support)'s 3.0. Skylar also leads on ratings volume (5 vs 1). frSIP Mobile (Legacy Support)'s advantage is in-app purchases (none vs 2) and update cadence (monthly vs every 4 months). On price, ads, monetization model 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. Skylar sells 2 one-off in-app purchases. frSIP Mobile (Legacy Support) asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Skylar holds the better App Store score, 4.0 against 3.0. That said, the two scores are not equally well evidenced: Skylar has 5 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

frSIP Mobile (Legacy Support) ships an update monthly, Skylar every 4 months. Both last shipped on November 1, 2026.

Scorecard5 real differences · 5 level
frSIP Mobile (Legacy Support) versus Skylar: the parameters behind the verdict, then further details
ParameterfrSIP Mobile (Legacy Support)Skylar
PriceFreeFree
Rating3.0 (1 ratings)4.0 (5 ratings) — better
Positive reviews50.0% of reviews—
Number of ratings15 — better
Update frequencyMonthly — betterEvery 4 months
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFreeFree
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS7.0 — better17.0
Further details — not scored
Size91 MB54 MB
Age rating4+4+
DeveloperDeltapath, Inc.BroTecs Technologies, LLC.

Customer experience

frSIP Mobile (Legacy Support)

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

Skylar

All ratings5 ratings
Positive80.0%
Neutral0.0%
Negative20.0%

In-app purchases

None

frSIP Mobile (Legacy Support)

No in-app purchases

2 purchases

Skylar

One-time2
  • G.729 Codec$2.99
  • Full Version$4.99

Questions

Is frSIP Mobile (Legacy Support) free?
frSIP Mobile (Legacy Support) is free to download, with no in-app purchases.
Is Skylar free?
Skylar is free to download, with in-app purchases available.
Which has better reviews, frSIP Mobile (Legacy Support) or Skylar?
Skylar is rated higher. frSIP Mobile (Legacy Support) averages 3.0 out of 5 from 1 ratings, while Skylar averages 4.0 from 5 ratings.
Do frSIP Mobile (Legacy Support) or Skylar have ads?
Neither frSIP Mobile (Legacy Support) nor Skylar shows ads.
Which is updated more often, frSIP Mobile (Legacy Support) or Skylar?
frSIP Mobile (Legacy Support) ships an update monthly, and Skylar every 4 months. Most recently, frSIP Mobile (Legacy Support) was updated on November 1, 2026 and Skylar on November 1, 2026.

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