Comparison

PrivateWave Professional vs GSMKEY

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

Head to head
About

PrivateWave Professional

Securely encrypt your calls using VoIP technology. This app allows for encrypted communication between users who also have the software installed, offering robust security features and low bandwidth usage. It is designed for business and personal use where call privacy is paramount.

Highlights
  • End-to-end voice encryption (ZRTP)
  • Signaling protection (SIP/TLS)
  • Mutual authentication with X.509 certificates
  • Low bandwidth usage
  • Extremely low battery drain
  • Supports various IP-enabled networks
Read full description

PrivateWave Professional is an innovative software to encrypt your calls in a totally safe and legal way through the VoIP Internet Protocol. It needs to be configured on your own PrivateServer or it can auto-configure itself on PrivateWave's hosted server. Once installed on mobile phones, PrivateWave Professional gives you the option to encrypt calls between the users (i.e both caller and called need to have the software installed). Using PrivateWave you can communicate easily and securely with your contacts. Please keep in mind that there is no way to call numbers on a public switched telephone network (PSTN). Easy to use: - Software only solution for iOS 11.x/12.x/13.x/14.x/15.x/16.x - The way to make calls doesn’t change Security: - Flexible security model: - ZRTP for end-to-end voice encryption - SIP/TLS for signaling protection - Use of only IETF standardized protocols - Security compliant with FIPS, NIST and NSA - Mutual Authentication with X.509 certificates - SSL Certificate Pinning - Based on open source technologies Performance: - Low average Bandwith: * in standby: negligible * during conversation: (100-200 K/minute) - International calls and worldwide roaming - Extremely low battery drain - Low latency (depends on network) Supported Networks: - Any IP-enabled network - 2G (GPRS, EDGE, 1xRTT) - 3G (UMTS, HSDPA, EV-DO) - 4G - WiFi - Satellite Encryption Algorithms: - ECDH 256 bit / 384 bit (default) / 521 bit (Elliptic Curve Diffie-Hellman) - AES256 (CTR) for SRTP - SIP/TLS with X509v3 digital certificates Audio Codec: - AMR Narrowband 4.75 kbits/s

About

GSMKEY

Control electric gates and automatic doors remotely by sending SMS commands. This application also allows for the configuration of device parameters. It is compatible with specific GSM-KEY products.

Highlights
  • Remote gate and door control via SMS
  • Device parameter configuration
  • SMS command sending
  • Compatibility with GSM-KEY products
Features
Read full description

GSM-KEY is used for the remote control of electric gate and automatic door by sending SMS text messages. Also used to config the parameters of the GSM-KEY device remotely. Compatible with WAFER 's GSM-KEY-AC and GSM-KEY-DC products series.

Screenshots

PrivateWave Professional4 screens
GSMKEY4 screens

Verdict

The call

The clearest difference is rating: PrivateWave Professional at 3.7 against GSMKEY's 3.0. PrivateWave Professional also leads on update cadence (every 5 weeks vs every 8 months) and ratings volume (3 vs 1). GSMKEY's advantage is iOS requirement (6.0 vs 11.0). On price, review sentiment, ads and in-app purchases 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

PrivateWave Professional holds the better App Store score, 3.7 against 3.0. Both are backed by a comparable volume of ratings — 3 and 1 respectively. Written reviews split almost evenly too, at 33% and 33% positive.

UpkeepUpdate frequency

PrivateWave Professional ships an update every 5 weeks, GSMKEY every 8 months. The most recent releases landed on September 22, 2026 and June 10, 2026 respectively.

Scorecard4 real differences · 6 level
PrivateWave Professional versus GSMKEY: the parameters behind the verdict, then further details
ParameterPrivateWave ProfessionalGSMKEY
PriceFreeFree
Rating3.7 (3 ratings) — better3.0 (1 ratings)
Positive reviews33.3% of reviews33.3% of reviews
Number of ratings3 — better1
Update frequencyEvery 5 weeks — betterEvery 8 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPodiPhone, iPod
Requires iOS11.06.0 — better
Further details — not scored
Size28 MB3 MB
Age rating4+4+
DeveloperBV TECH SPA艳丽 刘

Customer experience

PrivateWave Professional

All ratings3 ratings
Positive66.7%
Neutral0.0%
Negative33.3%
Written reviews6 reviews
Positive33.3%
Neutral0.0%
Negative66.7%

GSMKEY

All ratings1 ratings
Positive0.0%
Neutral100.0%
Negative0.0%
Written reviews6 reviews
Positive33.3%
Neutral33.3%
Negative33.3%

In-app purchases

None

PrivateWave Professional

No in-app purchases

None

GSMKEY

No in-app purchases

Questions

Is PrivateWave Professional free?
PrivateWave Professional is free to download, with no in-app purchases.
Is GSMKEY free?
GSMKEY is free to download, with no in-app purchases.
Which has better reviews, PrivateWave Professional or GSMKEY?
PrivateWave Professional is rated higher. PrivateWave Professional averages 3.7 out of 5 from 3 ratings, while GSMKEY averages 3.0 from 1 ratings.
Do PrivateWave Professional or GSMKEY have ads?
Neither PrivateWave Professional nor GSMKEY shows ads.
Which is updated more often, PrivateWave Professional or GSMKEY?
PrivateWave Professional ships an update every 5 weeks, and GSMKEY every 8 months. Most recently, PrivateWave Professional was updated on September 22, 2026 and GSMKEY on June 10, 2026.

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