Flex Messenger vs Gunter messenger
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Flex Messenger
A fast, secure, and free communication app that syncs across all devices. Send unlimited messages, documents, voice memos, images, and videos. Enjoy private group chats and make free HD calls.
- Unlimited messaging
- File sharing (any type)
- Large group chats
- Free HD voice and video calls
- Cross-device sync
- End-to-end encryption
Read full descriptionHide full description
Flex is a communication app with a focus on speed and security. It’s super-fast, simple, secure and free. Flex seamlessly syncs across all of your devices and can be used on desktops, tablets and phones alike. You can send an unlimited amount of messages, documents of any type (.doc, .zip, .pdf, etc.), voice memos, images and videos. Flex groups doesn't have any limits. Why use Flex? • 100% FREE & NO ADS: Flex will be free forever. We are not going to sell any kind ads or introduce subscription fees. • PRIVATE: No one can contact with you without knowing your exact contact information. Also we are not going to analyze or sell your social graph or any stats based on your communications. • SECURE: We made it our mission to provide the best security among open people-friendly messengers. • FAST: Flex also is very fast. We use newest technology for providing best communication speed. • GROUP CHAT & SHARING: With Flex, you can form large group chats of any size, quickly share large documents (.doc, .ppt, .zip, etc.) and videos, and send an unlimited amount of photos to your partners. • FREE CALLS: Make free phone and video calls with HD sound quality.
Gunter messenger
This secure messaging app prioritizes privacy with no servers, accounts, or stored messages. Chats are device-only and can be instantly deleted, with options to edit or remove messages. Enjoy crystal-clear video calls, group chats, and media sharing in a DDoS-proof environment.
- Serverless architecture
- No accounts or stored messages
- Device-only chat storage
- One-tap message deletion
- Edit and delete sent messages
- Crystal clear video calls
- Group chats and media sharing
Read full descriptionHide full description
Say goodbye to prying eyes and hello to Gunter—the messenger that’s allergic to servers. Unhackable? Damn right: no accounts, no stored messages, nothing for hackers to grab. Your chats live on your device only—poof, gone when you want. One tap wipes everything, leaving zero traces. Edit or delete messages with a long tap—you control the convo. Video calls? Crystal clear. Group chats and media sharing? Incoming faster than a Tokyo bullet train. DDoS-proof, with the slickest messaging UX around. No data hoarding, no tracking, just pure, untouchable talk. Privacy’s the whole game. Download Gunter and chat like the world can’t touch you.
Screenshots
Verdict
The clearest difference is update cadence: Gunter messenger at every 6 days against Flex Messenger's every 6 months. Gunter messenger also leads on review sentiment (100% vs 80%). Flex Messenger's advantage is device support (3 vs 1) and iOS requirement (8.0 vs 18.0). 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Flex Messenger ships an update every 6 months, Gunter messenger every 6 days. The most recent releases landed on October 12, 2026 and October 14, 2026 respectively.
| Parameter | Flex Messenger | Gunter messenger |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | 80.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 1 — better | — |
| Update frequency | Every 6 months | Every 6 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 8.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 120 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Colbook Investment Limited | Daniil Surnin |
Customer experience
Flex Messenger
Gunter messenger
In-app purchases
Flex Messenger
No in-app purchases
Gunter messenger
No in-app purchases







