The titles are free for a limited time only and become paid at any moment. If you see a price next to the “install” button, it isn’t free anymore. Similarly, If you see a price next to the “install” button, without a strikethrough showing the reduced amount it isn’t on sale anymore. Once you download a paid title that’s free or on sale, it’s, yours to keep even after the promotion ends, and you can reinstall it on any other device linked with the same Google Play ID.

Numberwiz

Current features:
Full factorization
Prime factorization
Trigonometric ratios (sine, cosine, tangent)
Convert number to Binary, Hexadecimal, and Octal notation
Factorial computation
Square, cube, and every root up to the 10th root

Planned features:
Full equation evaluator
Derivatives and Integrals
Function graphs (y=f(x))
Function arithmetic (f(x)+g(x)=?)
Algebra solver
Arbitrary precision calculator (Infinite precision)

Download Numberwiz

Scientific Diet Clock

:: REAL TIME CALORIE COUNTING
Diet Clock is a new way for you to control your calorie intake.
It displays your calorie usage in real time, and at a glance Diet Clock will show you how much to eat every day.

Diet Clock is very easy to understand - It works like a calorie chronometer.
- Calories from food will be added to the total.
- Calories burned (including your exercise) will be subtracted from the total.

So all you have to do is keep the counter as close to zero as possible - by logging what you eat.

Just set your daily calorie intake, hit start, and you're good to go!

Download Scientific Diet Clock

Speed Camera Radar

GETTING STARTED

1. If you just installed the app you will need to go to menu "Update databased" to download and install the latest database of speed camera for your region (country).
2. To run the hazard detection mode, press the "Start" button. at the bottom right of the screen.
3. The application notifies only the dangers that are along your route.
4. You can call main setting, swiping from the left edge of the screen to the right.
5. You can call dangers filter that you want to discover swiping from the right edge of the screen to the left.
6. To add a new POI, tap + button close to the SPEED at the bottom of the screen.
7. Sign in to edit and remove current POI

Download Speed Camera Radar

Genetic Helper

Transcribing and translating genetic sequences by hand is a time consuming process that many biology students spend hours doing over and over. This application accelerates this process by allowing your phone to look look up the coding sequences and calculate the results many many thousands of times faster than a human can. It also detects some mutations where one or more base pairs are missing, and this is also helpful for detecting typos. It ignores foreign characters commonly mistyped that would cause issues with similar apps

More features are on their way such as Punnet square calculation systems for squares of arbitrary length.

Download Genetic Helper

Complex Number Calculator | Polar Complex Calc

Use this complex number calculator as a scientific calculator. Any operation or function evaluation you can do with real numbers, you can also do the same with complex numbers by using this complex calculator. Namely, calculate expressions containing real, imaginary and, in general, any complex number in any form including, but not limited to, the standard (rectangular) and polar forms.

This complex calculator lets you enter complex numbers in the standard (rectangular) or in the polar form. The calculated values will be displayed in standard form; optionally, this complex calculator displays the results in the polar form and other modular forms.

Download Complex Number Calculator | Polar Complex Calc

Photo Exif Editor Pro - Metadata Editor (ON SALE)

What can Photo Exif Editor do?
•Browse and view Exif information from Android Gallery or from Photo Exif Editor's integrated photo browser.
•Add or correct the location where photo was taken using Google Maps.
•Batch editing multiple photos.
•Add, modify EXIF tags:
- Camera model
- Camera maker
- Captured time
- Orientation (rotation)
- Aperture
- Shutter speed
- Focal length
- ISO speed
- White balance.
- Much more another tags...

Download Photo Exif Editor Pro - Metadata Editor

doubleTwist Pro music player (FLAC/ALAC & Gapless) (ON  SALE)

doubleTwist Pro Lossless Player is the completely revamped premium version of doubleTwist Classic Player. It features a brand new material design UI with multiple themes, 10-band EQ, gapless support, lossless sound with FLAC & ALAC playback, casting support, podcast management and built-in AirSync for syncing your iTunes music to your Android device.

doubleTwist Classic Player has been recommended by the New York Times, BBC, Wall Street Journal and numerous tech publications.

Download doubleTwist Pro music player (FLAC/ALAC & Gapless)