Write notes and edit them easily. You canencrypt what you wrote, and you can use password to protect yournotes. There is a built-in browser, so you can copy and paste textsimply. (It is disabled by default, but you can enable it manuallyin the settings, if you want.)More in 1 Notepad:-Encryption-Built-in file editor (+hex editor)-Built-in html editor-Browser-Letter recogniser (beta!)-TTS (Text to Speech)-Notepad++If you want to make this app ad-free, please buy NotepadHEX ProKey. This will also support the development.This app contains a widget, which you can put on the homescreenand write notes there, so it will always be in front of youreyes.How-to use HEXeditor:First, you need to open the file for edit. (Eg. in TotalCommander,long-press on the file name, click edit, and choose NotepadHEXEditor.) After that, you need to place the cursor in the text tothe place you want to edit, and open the HEXeditor. You will onlybe able to edit the 100-100 characters before and after thelocationof the cursor.Encryption:Tick the encrypt checkbox, press the save button, and enter thekey. To decrypt the file go to read tab, open your file, enter thekey and press the decrypt button.Letter recogniser:Press the pencil button at the bottom of the screen. Draw oneletter/character, and only small ones. If you are ready, press thegreen "OK" button.Coming soon:-Better letter recogniser-Compatibility with Android's new external SD-card API(WARNING: The newer versions of NotepadHEX cannot decrypt thenotes/files encrypted with NotepadHEX 5.4.5A or older! Please makea backup from the encrypted files in non-encypted format!)

Warning! Use KFGwifi2 instead of this app, itwill be available soon (or maybe it is already)!This app automatically logs in into the wifi every time yourphone connects to it. You can activate different methods to avoidtimeout, which occurs when you haven't used your device for awhile. The app checks whether the login failed beacuse of theincorrect username or password, or it is due to the buggy server.You don't need to worry about your password, it is stored in anencrypted format. In case you are not connected to the "original"kfg wifi, you will get a notification, and you shouldn't loginthere! If you do think that you got a false warning, please contactme, and disable extra security in the menu, which will enable youto use the app normally.===========Attention!KFGwifi is necessary to use KFG Stand-ins, otherwise you may notget some notifications in time!

Attention! The new version of TXTEncryptfinally arrived! Download HEXSecure Full, which containsimprovements, bug fixes, newer algorithms, the ability to changethe block size and file-encryption! There won't be any updates toTXTEncrypt now!You can encrypt and decrypt text with this application. Thereare three encryption algorithms, Threedog is the strongest andSTEx4 is the weakest, but it is a bit faster.Encryption:1. Enter the key and the text and press the "encrypt text"button.2. Copy the encrypted text from the text box.Decryption:1. Enter the key and the encrypted text and press the "decrypttext" button.2. You can see the original text in the textbox.

This app can calculate the divisors of anumber and show them. It also means, that you can check whether itis prime (prime numbers have exactly two divisors). Prime numbersare highlighted, when there are more numbers, so you can see theprime factors. The app uses a special mathematical algorithm, whichis optimized for quad-core and octa-core devices! It means, thateven huge numbers 10^10 are processed in about 1 second! The primedivisors less than 1 million can be highlighted now (bold).To copy the result, press and hold the text field. This app iscompletely Ad-free!

-Encrypt files-Encrypt plain text-Share encrypted text to other apps (this function is limited to3tries in the free version!)-Share the received message with this app, and decrypt it easilyTo enjoy much more features and more advanced securitydownloadHEXSecure Full! It includes hash/checksum algorithms,password safeand AES file encryption.====================If you like this app, please buy HEXSecure Full, which allows youtoencrypt larger files (>2MB) and disables the ads! HEXSecureFullis much smaller, doesn't use the internet permission, hashashalgorithms and contains a password safe and many more!====================This application is designed to encrypt smaller files orsimpletext. It is the improvement of the old app TXTEncrypt, withbetteralgorithms, and more user-friendly and modern interface. Thisappuses non-standard, closed-source algorithms, which makesitperfectly suitable for encrypting sensitive data. Thoughthestrength of these algorithms is not officially tested, they seemtobe quite strong.You can choose between 5 algorithms, which have similar bases.Thestrongest one is "Threedog2", which is also used for theencryptionof the files. A pro version is available from now, itdisables theads, and enables the encryption of larger files (>2MB) If youwould like to enjoy the more advanced features like thepasswordsafe and the checksum algorithms, buy HEXSecure Fullversion.====================Usage:If you encrypt a text, the result will be copied to the clipboardofyour device, which means, that you have to go to the desiredplace,(for example open the SMS application, Messenger orNotebook) andpaste the text. (long-press on the field, and choosethe pastebutton in the "floating" menu)If you decrypt a text, paste it to the text-field, or writetheremanually, and enter the correct key, then press thedecryptbutton.If you encrypt or decrypt a file, first, press the filechooserbutton. In the opened window, navigate to the file, whichyou'dlike to en/decrypt, and click on it. Automatically, the filewillbe saved to the same place with the same name, but a".encrypted"extension will be added. If the output file alreadyexists, checkthe overwrite box, to replace it with the newone.You can share the encrypted text with other app, such as SMSapp,Messenger, Email, etc. without having to copy-paste. Just presstheshare button (next to encrypt) and choose the app you'd liketouse. In the free version, you can only use this option onlythreetimes! If you buy HEXSecure Pro or HEXSecure Full, you can usethisfunction unlimited times. To decrypt the received encryptedtext,press the share button in that app (if there is) andchooseHEXSecure (Decrypt text) in the list.The android.permission.INTERNET is used only by the ads.

Create and execute simple quantum circuits on the go

This is an extension to HEXSecure,whichenables file encryption over 2 MB, file decryprion over 3MBanddisables all the ads inside the app. (The maximum file size willbe32MB) With this app, you can use the share functionunlimitedtimes. It is not a standalone application, it won't workwithoutHEXSecure. If you experience error, go to the about tab andpressthe recheck license button. Please help me by buying this key!:)If you want more features & smaller size, checkHEXSecureFull!The permissions are necessary to check the license (whether thisappwas downloaded from Google Play).

Only for Karinthy students! KFG app sends you anotificationwhenever you got a new grade or there is a newsubstitution in yourclass. The apps works by using your E-Krétausername and password,to retrieve your grades. You can find moreinformation in-app onhow they work. If you enter your class, theapp can send anotification if there is a new substitution in yourclass.Unfortunately, the application cannot make a distinctionbetweengroups in a class, therefore you will get irrelevantnotificationsas well, unless you choose to ignore certain lessons.Storing logincredentials: The application stores your E-Krétausername andpassword in its own directory, where no one else canaccess it,unless the device has been modified in some way.Moreover, thepassword is encrypted using a custom algorithm wherethe usernameis used as a key. These credentials do not get sendanywhere,except for the E-Kréta servers. The application alsostores thetoken generated from your login credentials, which isused toaccess the data. The token can only be used to access someof yourdata and expires in less than an hour. If you experince anyissues,please submit a bugreport, or write an email to theaddressprovided. If you have no idea what is this app, it is NOTfor you!;)