App review by
Jonathan H. Liu, Common Sense Media
GravBot App Poster Image
Free physics puzzler frequently asks you to pay.

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The parents' guide to what's in this app.

Ease of Play

The first six levels are a tutorial, with signs in the background explaining how to play. The controls are fairly simple: two arrows to move left and right and another set of arrows to change the direction of the gravity.


The GravBot is a little box with a wheel and a screen displaying an icon face. If the GravBot falls on spikes, the face changes and it falls down, and then the level restarts.


The free GravBot app comes with 22 levels (grouped in two worlds), but also has two more level packs for $.99 each. Aside from the links to purchase the additional levels on the level selection screen, there are occasional screens while playing reminding you to purchase additional levels. There is also a link on the main menu for other games by the developer, plus constant banner ads.

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What parents need to know

Parents need to know that GravBot is a physics-based puzzle game that involves changing the direction of gravity to get the GravBot to all the batteries on each level. The app includes frequent reminders to purchase additional levels, and utilizes the Plus+ network, which raises some privacy and safety issues.

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Is it any good?

GRAVBOT is a solid physics-based puzzler: You are the GravBot, a little box on wheels that can move left and right but can't jump. Fortunately, you can also adjust gravity in any direction. The goal of the levels is to collect all the batteries without running into spikes, getting trapped, or falling off into space. You also receive medals based on the number of times you change gravity, and it can be a real challenge to hit the gold medal goal. The graphics are pretty nice -- a 3D computer style that makes the GravBot look like an old Macintosh Plus computer on a wheel -- and the controls are easy to learn and fairly intuitive. The intermittent ads asking you to purchase additional levels are an annoyance, however; it would have been sufficient just to offer the additional level packs on the menu screen and leave it at that. Overall, it's worth checking out for free to see if you like it, but be aware that the 22 levels won't last you very long.

App details

  • Devices: iPhone, iPod Touch, iPad
  • Price: Free
  • Pricing structure: Free
  • Release date: October 29, 2010
  • Category: Puzzle Games
  • Publisher: Team Phobic
  • Version: 1.1
  • Minimum software requirements: iOS 3.1 or later
  • Last updated: August 25, 2016

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