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Slowly vs Linphone

Professional comparison and analysis to help you choose the right software solution for your needs.

Slowly icon
Slowly
Linphone icon
Linphone

Slowly vs Linphone: The Verdict

⚡ Summary:

Slowly: Slowly is a pen pal app that allows people to connect with others around the world for meaningful conversations. Users can write letters, share stories, and make international friendships through the app's private messaging system.

Linphone: Linphone is an open source voice over IP (VoIP) phone and instant messaging client for Linux, Windows, macOS, iOS and Android. It supports standard voice and video calls as well as instant messaging between Linphone clients.

Both tools serve their respective audiences. Compare the features, pricing, and user ratings above to determine which best fits your needs.

Last updated: May 2026 · Comparison by Sugggest Editorial Team

Feature Slowly Linphone
Sugggest Score — —
Category Social & Communications Social & Communications
Pricing — Open Source

Product Overview

Slowly
Slowly

Description: Slowly is a pen pal app that allows people to connect with others around the world for meaningful conversations. Users can write letters, share stories, and make international friendships through the app's private messaging system.

Type: software

Linphone
Linphone

Description: Linphone is an open source voice over IP (VoIP) phone and instant messaging client for Linux, Windows, macOS, iOS and Android. It supports standard voice and video calls as well as instant messaging between Linphone clients.

Type: software

Pricing: Open Source

Key Features Comparison

Slowly
Slowly Features
  • Private messaging with other users
  • Ability to add friends and build a network of pen pals
  • Customizable stationery and stamps to personalize letters
  • Delayed delivery of messages to simulate the experience of traditional mail
  • Ability to attach photos, drawings, and other media to letters
  • Multilingual support for users from around the world
  • Ability to discover new pen pals based on interests and location
Linphone
Linphone Features
  • Voice over IP calling
  • Video calling
  • Instant messaging
  • Call encryption
  • Call recording
  • Call transfer
  • Audio codecs (Speex, G.711, G.722, G.729, MP3, AMR, etc.)
  • Video codecs (H.263, H.264, VP8, H.265)
  • NAT traversal using ICE protocol
  • Echo cancellation
  • DTMF support
  • Presence and buddy lists
  • Address book integration
  • Call logs
  • Conference calling
  • Call waiting
  • Caller ID
  • Message waiting indication

Pros & Cons Analysis

Slowly
Slowly

Pros

  • Encourages meaningful and thoughtful communication
  • Promotes cultural exchange and understanding
  • Provides a unique and nostalgic experience compared to instant messaging
  • Fosters a sense of community and international connections
  • Offers a distraction-free and ad-free environment

Cons

  • Delayed message delivery can be frustrating for some users
  • Limited features in the free version may not be sufficient for some users
  • Potential language barriers for users not fluent in multiple languages
  • Reliance on the app's servers for message delivery and storage
Linphone
Linphone

Pros

  • Free and open source
  • Cross-platform availability
  • End-to-end encryption
  • Good call quality
  • Active development and support

Cons

  • Limited native integration with mobile OS
  • Less features than proprietary alternatives
  • Smaller user base than competitors like Skype

Pricing Comparison

Slowly
Slowly
  • Not listed
Linphone
Linphone
  • Open Source

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Learn More About Each Product

Slowly
Slowly
Reviews, pricing & alternatives →
Linphone
Linphone
Reviews, pricing & alternatives →

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