Comparison

Silent Phone vs Cellcrypt Enterprise

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

Head to head
About

Silent Phone

This app offers secure, end-to-end encrypted voice, video, and messaging for businesses. Protect sensitive communications and intellectual property with advanced privacy features. Facilitate confident global collaboration for your team.

Highlights
  • End-to-end encrypted voice, video, and messaging
  • Secure conference calling and group messaging
  • Burn commands and timers to destroy messages
  • Secure file sharing
  • Zero-touch deployment
  • Integrated enterprise user management
Features
Read full description

Silent Phone provides enterprise-grade encrypted voice, video, and messaging. Our end-to-end security protects your business, its reputation, and its valuable intellectual property from spying eyes. With Silent Phone, your team can discuss important matters across continents with the same confidence as if you were all in the same room. Silent Phone is developed by Silent Circle, the world leader in enterprise privacy solutions. Features: - Privacy and security trusted by businesses and governments around the world - Simple "zero-touch" deployment across your organization - Integrated enterprise user management with Silent Manager - Secure voice and video calls with our unique Security Words - Secure high-definition conference calling and group messaging - Burn commands destroy all copies of sent messages - Burn timers automatically redact old messages - Voice memos speed communication and replace insecure voicemail - Read receipts and delivery receipts give your teams situational awareness - Securely send documents, videos, images, and other files - Silent World offers calling to/from traditional phone numbers with enhanced security - Standards-compliant Single Sign-On (SSO) - Scheduled training available for your teams

About

Cellcrypt Enterprise

Securely communicate with end-to-end encrypted voice, video, messaging, and file transfers. Offers post-quantum protection for sensitive government and enterprise communications, supporting large file sharing and group chats.

Highlights
  • Post-quantum protected communications
  • End-to-end encrypted voice and video calls
  • Secure instant messaging
  • Large file transfer (500MB+)
  • Group chats for secure collaboration
  • Mutual authentication for calls
Features
Read full description

SECURE COMMUNICATIONS WITH POST-QUANTUM PROTECTION *Can only be used with a Valid Enterprise Licence.* End-to-End Encryption with Post-Quantum Protection for Secure Voice, Video, Messaging, and File Transfers Protecting Sensitive to Highly Classified Government Communications Worldwide. Secure Instant Messaging Need to send a large file (500MB+) securely? No Problem. Cellcrypt Enterprise delivers military-grade encryption for private messaging, facilitating the seamless and secure exchange of files and ideas. Share photos, videos, voice notes and files effortlessly. Each message and file you send is safeguarded by a unique encryption key, providing unparalleled end-to-end security. Cellcrypt Enterprise enhances your collaborative efforts by allowing the creation of group chats for private messaging and file sharing directly within the app. These features boost productivity and foster secure, efficient communication within your enterprise. Secure Voice and Video Calls Calls are safeguarded with end-to-end encryption and signal obfuscation, providing the highest level of security through your mobile device's data connection. But it's not just about securing your calls; it's about enhancing your communication experience. Cellcrypt Enterprise's cutting-edge phone call encryption codecs ensure high-definition call quality, optimizing data and battery usage even across the most austere, low-bandwidth, mobile/wireless networks. Cellcrypt Enterprise supports secure calling over an extensive range of IP-based networks, including Wi-Fi, 5G, 4G/LTE, 3G/HSDPA, and satellite networks. Mutual authentication of all call participants eliminates any potential risks associated with Caller ID spoofing and Man in The Middle (MITM) attacks. Secure Conference Calls A conference bridge can be established instantly by creating a group of contacts and hitting the call button. With only mutually authenticated, authorized users, Cellcrypt Enterprise conference calls eliminate the need for participant PINs and passwords. Work Anywhere, on Any Device Cellcrypt Enterprise can be downloaded instantly for immediate use with no additional hardware dependencies. End-to-End Encryption Cellcrypt Enterprise uses double-layer encryption in an end-to-end configuration, with a new key for every call and message. The system is modular and adheres to best practice cryptographic standards/protocols, powered by a robust crypto core. With Cellcrypt Federal, data is secured end-to-end using advanced Elliptic Curve and Symmetric-Key Cryptography. For post-quantum protection, the underlying cryptography is overlaid with state-of-the-art Post-Quantum Cryptography algorithms for voice, video, messaging, and file transfers. International Security Standards Cellcrypt Enterprise is designed to meet the highest international security standards and is trusted by governments worldwide for protecting their most sensitive communications. Developed by an international team across multiple countries, Cellcrypt Enterprise represents a truly global solution for secure communications.

Screenshots

Silent Phone4 screens
Cellcrypt Enterprise3 screens

Verdict

The call

The clearest difference is rating: Cellcrypt Enterprise at 4.5 against Silent Phone's 3.7. Cellcrypt Enterprise also leads on review sentiment (75% vs 42%) and update cadence (fortnightly vs every 3 months). Silent Phone's advantage is ratings volume (88 vs 15). 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

Cellcrypt Enterprise holds the better App Store score, 4.5 against 3.7. That said, the two scores are not equally well evidenced: Silent Phone has 88 ratings behind it against 15, so its average is the more settled of the two. Written reviews point the same way: 42% of Silent Phone's written reviews are positive against 75% of Cellcrypt Enterprise's.

UpkeepUpdate frequency

Silent Phone ships an update every 3 months, Cellcrypt Enterprise fortnightly. The most recent releases landed on August 23, 2026 and June 3, 2026 respectively.

Scorecard4 real differences · 6 level
Silent Phone versus Cellcrypt Enterprise: the parameters behind the verdict, then further details
ParameterSilent PhoneCellcrypt Enterprise
PriceFreeFree
Rating3.7 (88 ratings)4.5 (15 ratings) — better
Positive reviews42.4% of reviews75.0% of reviews — better
Number of ratings88 — better15
Update frequencyEvery 3 monthsFortnightly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.013.0
Further details — not scored
Size75 MB218 MB
Age rating4+4+
DeveloperSilent Circle, LLCCellcrypt Inc.

Customer experience

Silent Phone

All ratings88 ratings
Positive68.2%
Neutral8.0%
Negative23.9%
Written reviews184 reviews
Positive42.4%
Neutral7.6%
Negative50.0%

Cellcrypt Enterprise

All ratings15 ratings
Positive93.3%
Neutral0.0%
Negative6.7%
Written reviews4 reviews
Positive75.0%
Neutral0.0%
Negative25.0%

Bugs and requests

Silent Phone

Reported bugs

16 issues
  • App crashes on launch with iOS updates
  • Login credentials not accepted after reinstall
  • Text input display issues (text cut off or invisible)
  • Messages not delivered despite showing as delivered
  • Call audio problems (no sound, distorted audio)
Show 11 more
  • App crashes when sending text messages
  • Background process doesn't work reliably
  • Incoming calls show busy signal after 30-90 minutes of inactivity
  • App disappears/closes immediately after opening
  • Incompatibility with latest iOS versions
  • Notifications not arriving properly
  • Video conferencing section missing or non-functional
  • Media attachment sharing failures
  • App freezes during connection establishment
  • Billing notification popups appearing unexpectedly
  • Balance information removed from app interface

Requested features

18 requests
  • Account creation option directly in app
  • Group messaging/texting capability
  • Multiple simultaneous accounts support
  • In-app credit balance display
  • Voicemail functionality
Show 13 more
  • Desktop/computer version
  • Apple Watch notifications
  • In-app subscription payment via App Store
  • Wired ethernet connection support
  • Screenshot notification alerts
  • Passcode/PIN app lock
  • Touch ID/biometric authentication
  • Better contact management integration
  • Ability to turn off read receipts
  • Manual key reset option
  • CallKit integration for native iOS experience
  • Background push notification improvements
  • Landscape orientation support on tablets

Cellcrypt Enterprise

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Silent Phone

No in-app purchases

None

Cellcrypt Enterprise

No in-app purchases

Questions

Is Silent Phone free?
Silent Phone is free to download, with no in-app purchases.
Is Cellcrypt Enterprise free?
Cellcrypt Enterprise is free to download, with no in-app purchases.
Which has better reviews, Silent Phone or Cellcrypt Enterprise?
Cellcrypt Enterprise is rated higher. Silent Phone averages 3.7 out of 5 from 88 ratings, while Cellcrypt Enterprise averages 4.5 from 15 ratings.
Do Silent Phone or Cellcrypt Enterprise have ads?
Neither Silent Phone nor Cellcrypt Enterprise shows ads.
Which is updated more often, Silent Phone or Cellcrypt Enterprise?
Silent Phone ships an update every 3 months, and Cellcrypt Enterprise fortnightly. Most recently, Silent Phone was updated on August 23, 2026 and Cellcrypt Enterprise on June 3, 2026.

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