When measuring your heart rate, just place your index finger over your iDevice’s LED flash and camera. The app will display your current BPM in real-time during the test. When the test is complete you’ll have the chance to record when you measured your heart rate and attach any other details. The app also includes a graph for the last 10 measurements.
Heart Rate PRO is available for free for a limited time. It has a 4-star rating with a total of 93 ratings.
The app starts your child off by having them create simple geometry like triangles and squares. As they progress, the lessons will introduce them to more complex 3-D geometry like icosahedron and tetrahedron. Guided views provide more than 50 levels of Euclidean geometry, and dozens of step-by-step videos are available as well. Your child is also able to create models on their own and share them with the world.
DRAW 3D JUNIOR is available for free for a limited time. It has a 5-star rating with a total of 11 ratings.
Metal Detector actually works. It may not be a replacement for a professional tool, but it definitely works. Simply hold your iDevice up to any object that creates a magnetic field and Metal Detector will show its strength. The app includes the ability to adjust sensitivity and a microtesla gauge.
Metal Detector PRO. is available for free for a limited time. It has a 4-star rating with a total of 243 ratings.
4th Grade Math Testing Prep will help any child increase their math knowledge. They’re able to work through test questions covering topics on a 4th grade level including algebra, angles, critical thinking, order of operations, and word problems. Test results will reveal where your child is struggling and where they shine, and you can share them with a teacher or parent via email. The app includes support for multiple students, password protection, and the ability to customize the test.
4th Grade Math Testing Prep is available for free for a limited time. It has a 4-star rating with a total of 112 ratings.
If you are a developer who would like to get your app included in our “Apps Gone Free” daily lists, here’s our basic set of rules:
- It must have at least a three-star average rating at the time it goes free.
- The app must not have been free numerous times (3+) over the last six months.
- The free version of your app must not include ads.
To submit an app, simply send a request to email@example.com with the subject “Apps Gone Free.” Please include the name of the app, a link to it in the App Store, when and for how long you intend to offer the app for free, and anything else you would like to share. We will take it from there.