# Chiffry Secure Messenger > Secure, encrypted messaging and calls with advanced German IT security standards. (iPhone/iPad app by Chiffry GmbH.) - Source: https://appshunter.io/ios/app/chiffry-secure-messenger/id941161683 (this page in markdown: same URL + `.md`) - Developer: [Chiffry GmbH](https://appshunter.io/developer/941161682) - Category: Social Networking, Business - Price: Free with in-app purchases - Age rating: 4+ - Requires: iOS 9.0 · 29 MB - Languages: American English, German (Germany) - Released: 2014-12-09 - Data updated: 2026-06-10 - Monetization: freemium - User reviews in markdown: https://appshunter.io/ios/app/chiffry-secure-messenger/id941161683/reviews.md ## What is Chiffry Secure Messenger? Chiffry is the first communication app with the quality label "IT Security made in Germany". This encrypted messenger allows you to send text and voice messages securely, share pictures, videos, contacts and locations confidentially and also make tap-proof phone calls. MOST MODERN SECURITY FUNCTIONS For encryption, Chiffry follows the BSI guidelines and uses the latest end-to-end encryption with 256-bit AES in GCM mode. All messages and telephone calls are encrypted on the sender's device and decrypted on the recipient's device. The encryption key is regenerated before each message or telephone call and is transmitted to the recipient according to the mailbox principle using modern elliptic curve cryptography (512-bit ECDH). In addition, all messages with 512-bit ECDSA signatures are forgery-proof and every user is identified thanks to encryption certificates. For comparison: online banks generally use 2,048 to 4,096-bit RSA encryption. The 512-bit EC encryption used by Chiffry corresponds to 15,500-bit RSA encryption. The effort to guess this key is at least 3.4 * 1038 times higher. (Sources: BSI TR-02102-1, TR-03111) SECURE DATA TRANSMISSION At Chiffry, data protection is a priority. The data transfer is carried out via the Chiffry communication servers. Those are located in envia TEL's high-performance data-centre, which is one of the most secure in Germany and meets the highest requirements for security, connectivity and availability. It is certified according to IT security standard ISO 27001 & management standard ISO 9001. Only telephone number and public keys for communication are recorded on the Chiffry server during registration. All messages remain on the server in an encrypted state until they are delivered to the recipient and are deleted after delivery or after 21 days at the latest. End-to-end encryption means that neither Chiffry employees nor third parties can access the content of these messages, as the encryption key is only located at the sender and recipient's premises to encrypt and decrypt information. FEATURES OF THE BASIC VERSION: - Tap-proof encrypted phone calls - Sending voice and short messages confidentially - Share pictures, videos, contacts and locations confidentially - Sending encrypted messages and notes - Encrypted chat and group chat with up to 10 members - Free phone calls via Internet All smartphone users can install and use the basic version of this encryption app for free. In addition, users of this security app for mobile phones can make tap-proof encrypted calls with their smartphone and tablet free of charge. The paid premium version includes significantly more security and comfort functions and offers extensions in the basic functions (including larger files, more group members, etc.). This version is suitable for private and business users who place particular emphasis on security or who want to use additional functions of the Premium version. The business version is designed for public authorities and companies and includes special solutions such as communication via your own chiffry server as well as optional integration of your own corporate design, use of special smartphones with hardened operating systems and integration of other hardware components. CONTACT info@chiffry.de LINKS Website: http://get.chiffry.de/ Presentation: http://www.digittrade.de/shop/info/praesentationen/presentation_chiffry.pdf THEY FOLLOW US https://www.facebook.com/Chiffry https://www.youtube.com/channel/UCijzdkZEHlkRjhT0vHjOaQw/videos ## Key features - End-to-end encrypted calls - Secure text and voice messaging - Confidential file sharing - Encrypted group chats - Tap-proof phone calls - IT Security made in Germany ## Pricing and in-app purchases Base price: Free. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | 1 Chiffry Coin | $0.99 | one-time | | 12 Chiffry Coins | $9.99 | one-time | | 36 Chiffry Coins | $24.99 | one-time | ## Recent user reviews (1 of 1) All indexed reviews: https://appshunter.io/ios/app/chiffry-secure-messenger/id941161683/reviews.md ### 3/5 — Good app, but needs work *2019-07-10* Hi, I like the app, aber mich stört dass Nachrichten nicht immer als neu angezeigt werden. Nachtrag: Auch nach einem Jahr hat sich dieses nicht verbessert. Ausserdem übertragen manchen Nachrichten in einer Gruppe nicht zu allen Personen ## Frequently asked questions about Chiffry Secure Messenger ### What is Chiffry's encryption strength? Chiffry uses 256-bit AES in GCM mode for end-to-end encryption, with keys regenerated before each message or call. This is equivalent to 15,500-bit RSA encryption, making it significantly more secure than typical online banking encryption. ### Where are Chiffry's servers located and are they secure? Chiffry's communication servers are located in a high-performance data center in Germany, certified to ISO 27001 and ISO 9001 standards. Data is stored encrypted and deleted after delivery or within 21 days. ### Does Chiffry have ads? No, Chiffry does not contain advertisements. The app is free to install and use, with optional premium features available for purchase. ### What devices does Chiffry support? Chiffry is available for iPhone, iPad, and iPod devices. The basic version can be used for free on all smartphones and tablets. ### How often is Chiffry updated? The latest version of Chiffry is 1.0.88, and it was last updated on November 3, 2023. This indicates a relatively active development cycle. ### What are the age restrictions for Chiffry? Chiffry has an age rating of 4+, making it suitable for a wide range of users. This rating suggests content is generally appropriate for children. ### What are the key differences between the free and premium versions of Chiffry? The free version offers core encrypted communication features. The paid premium version includes enhanced security and comfort functions, larger file sharing capabilities, and support for more group members. ### What user sentiment is reported for Chiffry? While specific user sentiment data is not provided, the app's focus on 'IT Security made in Germany' and advanced encryption suggests a target audience that values robust security and privacy. ## Version history (last 5 releases) ### 1.0.88 — 2023-11-03 We update the app regularly to improve it. Download the latest version to get the latest features and fixes. Changes in this version include: - optimized server-connection ### 1.0.87 — 2023-10-24 We update the app regularly to improve it. Download the latest version to get the latest features and fixes. Changes in this version include: - Updated App-Certificate ### 1.0.86 — 2022-07-12 We update the app regularly to improve it. Download the latest version to get the latest features and fixes. Changes in this version include: - Fixed: Call could crash on end - Fixed: Call could crash on call start - Fixed: Dark Theme on pre iOS 13 - Fixed: UI bugs on Chat overview - Fixed: microphone permission handling - Updated OpenSSL to 3.0.3 ### 1.0.85 — 2021-02-26 We update the app regularly to improve it. Download the latest version to get the latest features and fixes. Changes in this version include: - Fixed: reading a QR code could terminate the app under certain circumstances - Fixed: Calls now work correctly - Fixed: calls show correct app name in lock screen ### 1.0.84 — 2021-02-11 Improvement: better connection establishment Improvement: certificate renewal takes place after editing the current data BugFix: When sharing data with the app, the internal database could be declared invalid under certain circumstances --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-10.*