Comparison

Rhombus Key vs NocTel Go 2

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

Head to head
About

Rhombus Key

Securely unlock doors using your smartphone, eliminating the need for physical keys or badges. Enjoy fast, seamless access to buildings and manage multiple locations with a single login. Save your favorite doors for quick navigation.

Highlights
  • Secure mobile credentials for building access
  • Wave to unlock functionality
  • Save favorite doors for quick access
  • Multi-location access with one login
  • Centralized visibility and control
  • Seamless remote access
Read full description

Wave Hello to Rhombus Key – to securely unlock doors straight from your Smartphone. Say goodbye to physical keys, keycards, and badges by using Rhombus Key for:  - Fast and secure building access with mobile credentials.  - Seamless badging by simply waving to unlock or by using your phone.  - Quick navigation to your most-used doors by saving your favorites.  - Multi-location access across all your doors with one login.  This app is compatible with Rhombus Access Control – a modern approach to building management with centralized visibility and control, seamless remote access, and unlimited scalability.

About

NocTel Go 2

This business communication app extends your hosted voice services to your mobile device. Make calls, transfer them, access voicemails, and manage your business phone functions from your smartphone or tablet.

Highlights
  • Hosted voice services on mobile
  • Direct extension dialing
  • Call transferring
  • Voicemail access
  • Business phone functionalities
Features
Read full description

Take NocTel hosted voice services with you on your iOS smartphone or tablet! NocTel Go 2 can supplement or even replace physical handsets while being associated with the same NocTel account allowing for direct extension dialing, call transferring, personal voicemail and voicemail access of other extensions, and all our common business phone functionalities.

Screenshots

Rhombus Key3 screens
NocTel Go 24 screens

Verdict

The call

The clearest difference is review sentiment: Rhombus Key at 74% against NocTel Go 2's 0%. Rhombus Key also leads on update cadence (every 4 weeks vs every 10 months) and ratings volume (73 vs 18). NocTel Go 2's advantage is rating (4.7 vs 4.2) and device support (3 vs 1). 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

NocTel Go 2 holds the better App Store score, 4.7 against 4.2. Both are backed by a comparable volume of ratings — 73 and 18 respectively. Written reviews complicate that: 74% of Rhombus Key's written reviews are positive against 0% of NocTel Go 2's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Rhombus Key ships an update every 4 weeks, NocTel Go 2 every 10 months. The most recent releases landed on November 7, 2026 and November 3, 2026 respectively.

Scorecard5 real differences · 5 level
Rhombus Key versus NocTel Go 2: the parameters behind the verdict, then further details
ParameterRhombus KeyNocTel Go 2
PriceFreeFree
Rating4.2 (73 ratings)4.7 (18 ratings) — better
Positive reviews74.1% of reviews — better0.0% of reviews
Number of ratings73 — better18
Update frequencyEvery 4 weeks — betterEvery 10 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS16.015.0 — better
Further details — not scored
Size22 MB95 MB
Age rating4+4+
DeveloperRhombus Systems, Inc.NocTel Communications, Inc.

Customer experience

Rhombus Key

All ratings73 ratings
Positive79.5%
Neutral0.0%
Negative20.5%
Written reviews27 reviews
Positive74.1%
Neutral0.0%
Negative25.9%

NocTel Go 2

All ratings17 ratings
Positive82.4%
Neutral17.6%
Negative0.0%
Written reviews1 reviews
Positive0.0%
Neutral100.0%
Negative0.0%

Bugs and requests

Rhombus Key

Reported bugs

7 issues
  • App constantly bugs about having location on at all times
  • Issues with giving access to non-admin accounts
  • System will work working randomly
  • App neither sends the magic code to login nor has a password reset feature
  • Unable to activate account or log in
Show 2 more
  • Barely works and destroys battery
  • App checks location ALWAYS

Requested features

3 requests
  • Allow app to work with location settings set to While using the app
  • Improve basic features and user experience
  • Fix login and password reset issues

NocTel Go 2

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Rhombus Key

No in-app purchases

None

NocTel Go 2

No in-app purchases

Questions

Is Rhombus Key free?
Rhombus Key is free to download, with no in-app purchases.
Is NocTel Go 2 free?
NocTel Go 2 is free to download, with no in-app purchases.
Which has better reviews, Rhombus Key or NocTel Go 2?
NocTel Go 2 is rated higher. Rhombus Key averages 4.2 out of 5 from 73 ratings, while NocTel Go 2 averages 4.7 from 18 ratings.
Do Rhombus Key or NocTel Go 2 have ads?
Neither Rhombus Key nor NocTel Go 2 shows ads.
Which is updated more often, Rhombus Key or NocTel Go 2?
Rhombus Key ships an update every 4 weeks, and NocTel Go 2 every 10 months. Most recently, Rhombus Key was updated on November 7, 2026 and NocTel Go 2 on November 3, 2026.

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