1+1

What it is: an app for addition practice (numbers from 1 to 10, 9 levels/6 equations each).

What you do with it: solve the equations (by counting the items and pointing to the correct answer).

The equations are repeated until satisfactory results are obtained (the app uses an algorithm based on the Leitner system).

What we liked: ease of use, simple graphics, no distracting elements.

What we didn't like: the app provides only simple practice ('drilling' approach). No sound, no spoken instructions. May be too expensive for what it offers.

Free preview: if you are not sure, please try the free version of the 1+1 app.

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