Comparison

SKI+ v2 vs PeerLink X

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

Head to head
About

SKI+ v2

Features
Read full description

SKI+ v2 is an end-to-end instant messaging app with in-depth support of post-quantum encryption algorithms. Message encryption and decryption are completed on the user's device, and the server has no access to these details. Therefore, it provides users with a more privacy-protected messaging system. For more details, please refer to https://www.e2eelab.org. Feel free to download and use it. If you have any questions or suggestions, please send relevant descriptions or screenshots to: ziv@citi.sinica.edu.tw. We will address your inquiries promptly.

About

PeerLink X

A private, open-source messenger offering secure chats, group conversations, and voice/video calls. It allows users to maintain control over their communication infrastructure through self-hosted server options.

Highlights
  • Private messaging
  • Group chats
  • Voice and video calls
  • Open-source code
  • Self-hosted infrastructure
  • Custom server configuration
Features
Read full description

PeerLink X is a private, open-source messenger for secure chats, group conversations, voice and video calls, and self-hosted communication. Stay connected with friends, family, teams, and communities while keeping more control over the infrastructure used for your communication. PRIVATE MESSAGING Send private messages through a clean and modern chat interface. PeerLink X is designed for everyday personal and team communication. GROUP CHATS Create group conversations for friends, families, teams, projects, and communities. VOICE & VIDEO CALLS Make voice and video calls directly from PeerLink X and communicate without switching between multiple apps. OPEN-SOURCE MESSENGER PeerLink X is open source. The source code of both the mobile application and server components is publicly available for review. Open-source development makes it possible to inspect how the application works and independently deploy the communication infrastructure. SELF-HOSTED SERVERS PeerLink X supports self-hosted communication infrastructure. Advanced users, teams, and organizations can run their own servers instead of depending entirely on a centralized messaging service. FLEXIBLE SERVER CONFIGURATION PeerLink X supports configurable Bootstrap, Relay, and TURN servers. Server configuration can be added to the application using a QR code available on the official PeerLink X website. RELIABLE CONNECTIVITY Relay and TURN support helps PeerLink X maintain communication across different networks and network configurations. PRIVACY-FOCUSED COMMUNICATION PeerLink X is designed around private communication and reducing unnecessary dependence on centralized services. KEY FEATURES • Private messaging • Group chats • Voice calls • Video calls • Open-source code • Self-hosted messenger infrastructure • Custom server configuration • Bootstrap, Relay and TURN support • QR-based initial server setup • Modern and simple interface PeerLink X is designed for users looking for a private messenger, secure chat app, open-source messenger, self-hosted chat, private voice calls, video calls, and greater control over their communication infrastructure. OPEN SOURCE & SELF-HOSTED Application source code: https://github.com/simplegear-org/peerlink Server source code: https://github.com/simplegear-org/peerlink_servers Official website, server configuration and QR setup: https://simplegear.org

Screenshots

SKI+ v24 screens
PeerLink X4 screens

Verdict

The call

The clearest difference is iOS requirement: PeerLink X at 15.0 against SKI+ v2's 17.6. On price, update cadence, 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.

UpkeepUpdate frequency

SKI+ v2 ships an update fortnightly, PeerLink X weekly. The most recent releases landed on October 25, 2026 and October 18, 2026 respectively.

Scorecard1 real difference · 9 level
SKI+ v2 versus PeerLink X: the parameters behind the verdict, then further details
ParameterSKI+ v2PeerLink X
PriceFreeFree
Rating—5.0 (1 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—1 — better
Update frequencyFortnightlyWeekly — better
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, iPadiPhone, iPod
Requires iOS17.615.0 — better
Further details — not scored
Size249 MB59 MB
Age rating4+4+
DeveloperAcademia Sinica Research Center for Information Technology InnovationVladimir Zarkov

In-app purchases

None

SKI+ v2

No in-app purchases

None

PeerLink X

No in-app purchases

Questions

Is SKI+ v2 free?
SKI+ v2 is free to download, with no in-app purchases.
Is PeerLink X free?
PeerLink X is free to download, with no in-app purchases.
Do SKI+ v2 or PeerLink X have ads?
Neither SKI+ v2 nor PeerLink X shows ads.
Which is updated more often, SKI+ v2 or PeerLink X?
SKI+ v2 ships an update fortnightly, and PeerLink X weekly. Most recently, SKI+ v2 was updated on October 25, 2026 and PeerLink X on October 18, 2026.

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