Nonograms is picture logic puzzles in which cells in a grid have to be colored or left blank according to numbers given at the side of the grid to reveal a hidden picture. In this puzzle type, the numbers measure how many unbroken lines of filled-in squares there are in any given row or column.
A free .apk file of Nonogram Classic 3.1 is available from Droid Informer and you can take a look at users' reviews on this site. Prepare 893 KB of free space on your device for this app installer and keep in mind that it runs on Android 2.1 and above. According to the antivirus report, the app doesn't contain viruses or any kind of malware. Speedhelp is the official developer of this application that can be found in the Puzzle Games category.
Over 50K users downloaded and installed the game and its most recent release was on Sep 21, 2014. Nonogram Classic has the overall rating 3.6 on Google Play. There are adverts in the app.
Some users suppose that the weak side of this application is a poor layout.