Comparison

OpusTel vs GuestCon

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

Head to head
About

OpusTel

This app provides a real Swiss international telephone number for secure VoIP calls on iOS devices. It offers HD audio quality, free global calls between users, and call recording capabilities, all with a focus on user privacy.

Highlights
  • Real Swiss international telephone number
  • Secure VoIP calls
  • HD high-definition audio quality
  • Free global calls between users
  • Call recording
  • Conference calls
  • Automatic language selection
Read full description

OpusTel OpusTel is the mobile phone App for iPhone, iPod and iPad, permitting one to use a real Swiss international telephone number, e.g. 0041 41 520 60 00. It allows one to make and to receive secure VoIP calls from any iOS device using 5G/4G/3G/UMTS or Wi-Fi Internet connectivity. It was developed with the focus on privacy. Features: 1. Secure incoming and outgoing calls 2. Incomming calls are free of charge (no roamingcosts) 2. HD high-definition audio quality with the G722 and Opus codec 3. Free global calls from OpusTel to OpusTel 4. Easy transfer calls to any telephone number 5. Ability to record incoming and outgoing calls 6. Conference calls 7. Automatic language selection based on handy language (15 languages like EN, DE, CN, FR, ES, IT ...)

About

GuestCon

Read full description

This app allows hotel guests to use their iPhones as an extension of their rooms and as a portal to hotel services and promotions. No configuration is required on the part of the guest and the app will be associated with the room automatically: all the guest will need to do is tap on a link that the hotel will send upon check-in. With a simple, consistent, and intuitive interface, compatible with dark mode, the app allows guests to make and receive calls as if they were using their room phone. Even if they are not at the hotel at the time. Additionally to working as an extension of the room, the app also provides many other features like: - receive notice as soon as the room has been disinfected - room door unlocking - bill visualization - one-tap access to all of the hotel's departments - access to the hotel's voice mail - set wake-up calls - special promotions specially designed for GuestCon users such as gift discounts, special meals, etc. - recording of incoming and outgoing calls (depending on the hotel's PBX model), with automatic transcription. All calls made through the app will be charged to the hotel's account so that guests traveling abroad do not need to have a phone data plan on their iPhone. All calls received by the room will also be able to be answered directly on the iPhone.

Screenshots

OpusTel4 screens
GuestCon4 screens

Verdict

The call

The clearest difference is update cadence: GuestCon at every 5 weeks against OpusTel's every 14 months. 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

OpusTel ships an update every 14 months, GuestCon every 5 weeks. The most recent releases landed on September 29, 2026 and October 8, 2026 respectively.

Scorecard1 real difference · 9 level
OpusTel versus GuestCon: the parameters behind the verdict, then further details
ParameterOpusTelGuestCon
PriceFreeFree
Rating5.0 (6 ratings) — better—
Positive reviews80.0% of reviews—
Number of ratings6 — better—
Update frequencyEvery 14 monthsEvery 5 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhoneiPhone, iPod — better
Requires iOS16.015.5 — better
Further details — not scored
Size98 MB21 MB
Age rating4+4+
DeveloperOpusTelGlobal BHS

In-app purchases

None

OpusTel

No in-app purchases

None

GuestCon

No in-app purchases

Questions

Is OpusTel free?
OpusTel is free to download, with no in-app purchases.
Is GuestCon free?
GuestCon is free to download, with no in-app purchases.
Do OpusTel or GuestCon have ads?
Neither OpusTel nor GuestCon shows ads.
Which is updated more often, OpusTel or GuestCon?
OpusTel ships an update every 14 months, and GuestCon every 5 weeks. Most recently, OpusTel was updated on September 29, 2026 and GuestCon on October 8, 2026.

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