Ages 3-6. This is our most popular app of all time, used by school systems in the United States, Australia, Germany, and others. It is the highest quality app in the store that you'll find to teach and practice the concept of numbers from 1 to 100. We first developed it in 2009 and continue to update it with new features. Thanks for your support of our famous, Hundred Board!

The Hundred Board is a fun and educational exercise found in the Montessori classroom to help children with their counting from 1 to 100. The board and number tiles in the app are exact replicas of the classic classroom materials.

The basic task is to transfer the scrambled number tiles on the right hand side to the board in the correct order.


- Assemble the Hundred Board in sequence using either a touch only method where the number tile moves to the board automatically, or drag and place the tiles to the board for them to snap into position.

- Show the control numbers on the board to simplify the task.

- Simplify the task even further with an activity that shows a reduced number of scrambled tiles to search through.

- Assemble the Hundred Board in a random fashion.

- Assemble the Hundred Board in sequence by Evens or Odds.


- Every number can be heard aloud when it is placed into position, reinforcing the name of each number for the child.

- At the bottom of the screen there is either a score or a timer for parents and teachers to evaluate a child's progress.


Schools worldwide have incorporated our apps into their classrooms. See it used in a Montessori school in Germany here:

The Hundred Board is now promoted by the Australian Institute for Teaching and School Leadership as an effective app for learning number sequencing techniques.

Customer Comments:

"This looks very simple, but, you'd be surprised how engrossing the children find this lesson to be. I've watched our five year old daughter spend over an hour working with it, trying to get to a hundred!"

"Our son (6) started first grade and is ecstatic to be the only kid to write all the numbers from 1-100! Your app is fun to him!"

This activity is a time-tested, teaching tool used in the Montessori classroom that children enjoy doing. The app was co-developed and approved by an AMI certified Montessori teacher with over forty years experience. Use this app as a complement to your child's classroom education and as a follow-up to the other Montessori applications in the app store teaching introductory counting. Your child will enjoy this challenging and fun activity!

Visit our website:

App page:

What's New

Version 6.2

Thanks for your support of our Montessori inspired apps! The Hundred Board continues to be implemented in new schools every week and we're very appreciative! This update is to fix a few little bugs that could slow down the app from time to time. We welcome any feedback yo have, so please contact us anytime!

Thanks again!
- Mobile Montessori Team

Ratings and Reviews


Great apps for any Montessorian

As a certified Montessori toddler, early childhood, and lower elementary teacher I have to say I absolutely LOVE these apps. The subtle music and sounds, and the calmness of the voices fits right into the Montessori style of teaching. Not only do I use all of the apps for my own son at home, but I also recommend them to parents who ask for "homework", or who want to supplement their children's Montessori education further.
I understand that some people find the apps too boring for their children, or feel as if their children aren't "stimulated" enough. Montessori education stimulates children by giving them accurate facts to work with, not by overloading their senses with bright colors and animated pictures, or loud music and sounds.
These apps are a great addition to the Montessori curriculum, presenting children with the original tools but in a more modern medium.

Loachapoka Elementary School

Great App!

I am the technology specialist at LES. I am in charge of finding great apps to support common core instruction in our K - 6 classrooms. This app is great! It is rare to find an app that matches up so well with many of the skills that we are teaching in the classroom. We use this app with our Kindergarten and 1st grade students. The kids love it! It has several different levels. You can fill in the whole hundred board in a smaller sequence or the whole board. You can also fill in just the even numbers or just the odd numbers. We use this in our math stations which require the kids to be able to work independently with meaning and this app fits the bill for us! Try it out for sure, and make certain that you check out all the amazing Montessori apps from this developer.

Augustana college student

Informative, but not engaging

This app would be good for very young children. The simple instructions allow the game to be played by the child alone. I love that the app is true to the Montessori ideals of education meaning the child learns independently through inquiry. I would suggest that the app include options for feedback for students other than how many times the child answers incorrectly. For instance, possibly give the student a clue to what the correct number is instead of simply increasing the number of incorrect answers. Also, tell the child the correct answer after the child incorrectly answers. This is a great way for the child to receive informal feedback while perfecting their counting skills.


Rantek Inc.
237.6 MB
Requires iOS 8.0 or later. Compatible with iPhone, iPad, and iPod touch.
Age Rating
Rated 4+
© 2017 Mobile Montessori ® by Rantek Inc.
In-App Purchases
  1. Hundred Board 101 - 200 Extension $2.99
  2. Hundred Board 1 - 1000 Extension $1.99


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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