SKI+ v2 Prem vs Wave
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SKI+ v2 Prem
Read full descriptionHide full description
SKI+ v2 is an end-to-end instant messaging app that utilizes post-quantum encryption algorithms. The encryption and decryption of messages are performed on the mobile device, and the server side cannot access the encryption/decryption details. The enterprise version supports messaging services and data localization, and provides autonomous account and permission management functions. For more details, please refer to https://www.e2eelab.org If you have any usage questions or suggestions, feel free to send related descriptions or screenshots to: ziv@citi.sinica.edu.tw We will address your inquiries as soon as possible.
Wave
A privacy-focused messaging app offering end-to-end encrypted chats without requiring sign-ups or personal information. It utilizes a decentralized network for enhanced user control and supports both one-to-one and group conversations.
- End-to-end encryption
- No sign-up required
- Decentralized network
- One-to-one and group chats
- Optional Bluesky integration
- Ad-free and tracker-free
Read full descriptionHide full description
Wave: Secure Messaging Wave is a privacy-first messaging app built for people who value security, simplicity, and control. Chat freely without signing up, sharing personal details, or trusting centralized servers. You can start messaging instantly. Wave uses end-to-end encryption, ensuring only you and the people you’re chatting with can read messages. Conversations are encrypted on your device and decrypted only by recipients. Powered by XMTP, Wave is built on a decentralized messaging network reducing reliance on central servers and giving users more control over their conversations. Wave supports fast one-to-one messaging and secure group conversations in a clean, minimal interface with no clutter or distractions. You can optionally connect your Bluesky account to message people you already know, or simply use Wave on its own without linking any account. Wave is designed with privacy at its core, with end-to-end encrypted messages, a privacy-first architecture, and no ads or trackers.
Screenshots
Verdict
SKI+ v2 Prem and Wave are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
SKI+ v2 Prem ships an update every 2 weeks, Wave every 4 weeks. The most recent releases landed on September 15, 2026 and September 6, 2026 respectively.
| Parameter | SKI+ v2 Prem | Wave |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 2 weeks — better | Every 4 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 17.6 | 16.0 — better |
| Further details — not scored | ||
| Size | 248 MB | 149 MB |
| Age rating | 4+ | 12+ |
| Developer | Academia Sinica Research Center for Information Technology Innovation | Simhadri Bogula |
In-app purchases
SKI+ v2 Prem
No in-app purchases
Wave
No in-app purchases
