Horizon Smartphone App vs CallSwitch One
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Horizon Smartphone App
Make and receive calls using your IP telephony service from your smartphone. Stay connected with colleagues through presence and instant messaging, perfect for remote or mobile workers.
- Make and receive IP calls
- Instant messaging
- User presence indicators
- Remote work solution
- Business communication
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The Horizon Smartphone App allows you to make and receive calls using the Horizon IP telephony service from your iOS device. This is ideal for people who often work remotely or work from different locations where it is not practical to install a handset. In addition, the app also provides presence and instant messaging between users, keeping you connected to work colleagues no matter where you are. ******************************************** Note: A Horizon account enabled for the iOS soft-client is required to use the app. Please contact your Horizon Service Provider for more information. *********************************************
CallSwitch One
This app allows users to manage all their business communications on any device. It offers features like making and receiving calls from a landline number, voice and video conferencing, and team chat with file sharing.
- Business calls from landline number
- Voice and video conferencing
- Team chat with file sharing
- Group and individual conversations
- Business directory access
- Conversation threads
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CallSwitch One allows users to take their communications channels with them wherever they go, however they work, and on whatever device they choose. When used in conjunction with a CallSwitch One subscription, the app offers a host of communication and collaboration features within a single, intuitive pane. Make and receive business calls from your landline number, from anywhere, enjoy voice and video conferencing tools, chat with colleagues individually or in groups, with file sharing, voice notes, conversation threads and more, and take your business directory on the road, wherever work takes you. Whatever your business needs, CallSwitch One is built for modern working.
Screenshots
Verdict
The clearest difference is update cadence: CallSwitch One at every 8 days against Horizon Smartphone App's every 9 months. CallSwitch One also leads on review sentiment (40% vs 12%). Horizon Smartphone App's advantage is iOS requirement (12.1 vs 15.0). On price, ads, in-app purchases and monetization model 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Horizon Smartphone App ships an update every 9 months, CallSwitch One every 8 days. The most recent releases landed on October 18, 2026 and October 20, 2026 respectively.
| Parameter | Horizon Smartphone App | CallSwitch One |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 11.5% of reviews | 40.0% of reviews — better |
| Update frequency | Every 9 months | Every 8 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.1 — better | 15.0 |
| Further details — not scored | ||
| Size | 62 MB | 57 MB |
| Age rating | 4+ | 4+ |
| Developer | Gamma | NEBULA CLOUD LIMITED |
Customer experience
Horizon Smartphone App
CallSwitch One
Bugs and requests
Horizon Smartphone App
Reported bugs
89 issues- App stops and freezes
- Lost ability to assess menu on call
- Cannot transfer, speaker, or end calls
- History screen does not allow deletion
- Screen does not automatically refresh
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- Missed calls not displayed
- Does not work with AirPod earbuds
- Delay before call connects
- Speakerphone option does not always work
- Password needed for voicemails
- Do not disturb function does not always work
- Does not allow answering calls on time
- Hangs up calls randomly
- Voicemail password not accepted
- Cannot clear call log
- Harder to navigate
- Cannot always find speaker option
- Receiving internal calls - no sound
- Calls constantly drop
- Cannot use AirPods
- Zero audio with AirPods
- Calls pushing through DND
- Calls drop and not received
- Needs re-downloading weekly
- Passwords are too long
- Doesn't let you log in
- No support from company
- Crashing and locking up
- Massive delays between desktop and mobile ringing
- Finished call on desktop, mobile rang afterwards
- Stops working after turning off VOIP
- Constantly states missed call without allowing pickup
- Login is completely unreliable
- Consistently ignores phone settings (DND, driving)
- Rings through while driving and DND is on
- Rings through regardless of notification settings
- 0 voicemail notifications every hour
- Voicemail notifications turned off, still rings
- Rarely gets updates to fix bugs
- Poorly designed
- Needs to be reinstalled regularly
- Recent update hasn’t improved it
- Latest update makes dialling difficult
- Buttons too small and close together
- Colours too similar
- Doesn't respect iPhone system-wide DND settings
- Requires manual DND setting in app
- Requires constant deleting and re-downloading
- Faulty, temperamental
- Delays between calls
- Audio drops in and out
- Half the time calls aren’t received
- Massive delays in calls ringing
- Calls constantly drop when trying to transfer
- Cannot use desktop app to dial out from phone book
- Drops calls all the time
- App will not let you answer calls
- Calls ring out even after answered
- 0 voicemails notifications constantly
- Voicemail turned off, still notified
- 0 pending voicemail message updates regularly
- Outgoing calls usually work
- 50/50 chance of call connecting when answering
- Caller disconnected if call doesn't connect
- Irritating notifications that there are 0 voicemails
- Notifications every minute
- Disconnects Bluetooth audio and reverts to phone
- Notification every 30 mins saying 0 pending voicemails
- Notification every 2 hours informing 0 voicemails
- Notifications throughout the night
- Notification started again after listening to voicemail
- Notification of having 0 voicemails every half an hour
- Call quality very poor
- Delay while calls diverted from desk phone to app
- People hang up by the time it goes through
- Quality of call is poor, can't hear each other
- Recent update results in reminders of zero voicemails
- Latest update keeps telling me zero voicemails
- Latest update tells me zero voicemails every minute
- App was fine until latest update
- Latest update causes 0 pending voicemails notification
- Latest release has irritating notifications for 0 voicemails
- App completely broken after login
- Unable to click on any features after login
- Intermittently take calls if app doesn't cancel
- App requires serious testing
- iOS bugs when selecting previous caller
- Selecting contact from iPhone contacts defaults to first alphabetical
- No Apple Watch support
Requested features
8 requests- Allow deletion of call history
- Automatic screen refresh for missed calls
- Ability to add work contacts to app directory
- Direct access to iPhone contacts
- Ability to switch on do not disturb
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- Improve user interface for larger buttons
- Block nuisance numbers
- Apple Watch support
CallSwitch One
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Horizon Smartphone App
No in-app purchases
CallSwitch One
No in-app purchases
Questions
Is Horizon Smartphone App free?
Is CallSwitch One free?
Do Horizon Smartphone App or CallSwitch One have ads?
Which is updated more often, Horizon Smartphone App or CallSwitch One?
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