Comparison

Fixed Line vs FastCaller

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

FastCaller

This app offers a smart T9 dialer for instant contact search. Quickly find and call contacts with minimal taps by typing any part of their name or number. It features a clean interface and supports multiple languages for efficient communication.

Highlights
  • Smart T9 keyboard for contact search
  • Search by name or number (partial)
  • Multi-language support
  • Quick call via long-press
  • Recent calls prioritized
  • Clean and simple interface
Features
Read full description

FastCaller Smart T9 Dialer for Instant Contact Search FastCaller helps you find and call contacts quickly with fewer taps. Just start typing — you don't need the full name or number. The built-in T9 keyboard matches results instantly using any part of the name, surname, or phone number. The search engine is fast and accurate, designed to get you to the right contact with minimal effort. - T9 keyboard with smart contact search - Works with both names and numbers, even partial ones - Supports multiple languages with matching character sets - Long-press to quickly call a contact - Recent calls stay on top for faster redial - Taptic feedback when the call connects (when dialing from the app) - Simple, clean interface with no clutter FastCaller is made for users who want speed and efficiency in everyday calling.

Screenshots

Fixed Line4 screens
FastCaller4 screens

Verdict

The call

The clearest difference is in-app purchases: Fixed Line at none against FastCaller's 4. Fixed Line also leads on ads (none vs shown) and rating (5.0 vs 4.7). FastCaller's advantage is ratings volume (15 vs 1). On price, update cadence 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. FastCaller sells 4 in-app purchases, starting at $0.99 per month. Fixed Line asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Fixed Line holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: FastCaller has 15 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on June 24, 2026 and July 17, 2026 respectively.

Scorecard6 real differences · 4 level
Fixed Line versus FastCaller: the parameters behind the verdict, then further details
ParameterFixed LineFastCaller
PriceFreeFree
Rating5.0 (1 ratings) — better4.7 (15 ratings)
Positive reviews40.0% of reviews—
Number of ratings115 — better
Update frequencyEvery 2 monthsEvery 2 months
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPodiPhone, iPod
Requires iOS13.0 — better15.6
Further details — not scored
Size34 MB40 MB
Age rating4+4+
DeveloperUNICOPE GmbHRoman Bekas

Customer experience

Fixed Line

Written reviews5 reviews
Positive40.0%
Neutral20.0%
Negative40.0%

FastCaller

All ratings15 ratings
Positive93.3%
Neutral0.0%
Negative6.7%

In-app purchases

None

Fixed Line

No in-app purchases

4 purchases

FastCaller

Subscriptions2
  • No ADs & Quick Dial monthly$0.991 Month
  • No ADs & Speed Dial yearly$9.991 Year
One-time2
  • Remove Ads$0.99
  • Unlock Quick Dial$0.99

Questions

Is Fixed Line free?
Fixed Line is free to download, with no in-app purchases.
Is FastCaller free?
FastCaller is free to download, with in-app purchases available.
Which has better reviews, Fixed Line or FastCaller?
Fixed Line is rated higher. Fixed Line averages 5.0 out of 5 from 1 ratings, while FastCaller averages 4.7 from 15 ratings.
Do Fixed Line or FastCaller have ads?
FastCaller shows ads; Fixed Line does not.
Which is updated more often, Fixed Line or FastCaller?
Fixed Line ships an update every 2 months, and FastCaller every 2 months. Most recently, Fixed Line was updated on June 24, 2026 and FastCaller on July 17, 2026.

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