Copiosus vs LockChat
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Copiosus
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Copiosus is just another P2P chat application. This software is provided "as is" without warranties or conditions of any kind, either expressed or implied. Please download this app only if: - You care about security. - You don't care about a beautiful UI. - You like to try apps other than WhatsApp and Signal. Features: - Send messages. - Send files and images. - Block users. - Two factor authentication (MFA) - End-to-end encryption using an asymmetric key. - Improved end-to-end security using a security key as a second factor which encrypts data using a shared symmetric key. - Minimal privileges required. - No in app purchases. - No ads. How does end-to-end encryption work in this app: 1. Whenever you send a message M a random symmetric key R is generated 2. R is encrypted using the asymmetric (public) key of the other user resulting in A 3. M is encrypted with R resulting in N 4. If security key S is set: N is encrypted by S 5. N and A is sent to the destination
LockChat
This app provides end-to-end encrypted messaging, ensuring your conversations are private and secure. It offers advanced features for corporate clients, including server management and user control.
- End-to-end encrypted chat
- User-controlled keys
- Corporate server management
- User management
- Contact list integration
- Secure file transfer
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After successfully securing email communication and file transfer, Galaxkey is happy to secure the end-to-end messaging for users. Galaxkey uses it’s robust data protection platform to build a secure chat application. The chat application covers the missing piece of secured instant messaging from the Galaxkey’s data protection platform. It allows users to securely chat with each other with keys controlled by them. In addition to normal chat features, it will allow corporate customers to 1. Manage chat server within their infrastructure 2. Manage users using Galaxkey interface 3. Have complete control over the instant messaging app Users will be able to add any contact from their contacts list and communicate securely with them. Galaxkey will be adding many new and unique features to the application in near future.
Screenshots
Verdict
The clearest difference is update cadence: LockChat at every 3 weeks against Copiosus's every 4 months. LockChat also leads on iOS requirement (13.0 vs 17.6). On price, ads, in-app purchases and device support 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Copiosus ships an update every 4 months, LockChat every 3 weeks. The most recent releases landed on August 27, 2026 and July 7, 2026 respectively.
| Parameter | Copiosus | LockChat |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 4 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 17.6 | 13.0 — better |
| Further details — not scored | ||
| Size | 4 MB | 250 MB |
| Age rating | 4+ | 4+ |
| Developer | Verbosus.com | Galaxkey Limited |
In-app purchases
Copiosus
No in-app purchases
LockChat
No in-app purchases





