Comparison

Mystery Number vs Hundreds Chart

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Mystery Number

This app offers interactive number-based games and tools for young students to practice concepts like number sense, place value, and counting. It provides digital versions of traditional classroom activities, allowing for individual, partner, or group play with features like number charts, missing number puzzles, and place value manipulatives.

Highlights
  • Digital number line and pocket chart activities
  • Guess my number and higher/lower games
  • Missing number puzzles
  • Place value manipulatives (ten more/less, one more/less)
  • Teacher tool with customizable number charts
  • Two-player and one-player against computer modes
Features
Read full description

Little Monkey Apps Mystery Number is the digital version of the game 'Guess my number' or 'higher and lower' or a one hundred pocket chart or number line activities traditionally played in classrooms as mathematical warm ups. Teachers know that these 'games' provide opportunities to challenge young students understanding number, numeration and place value, allowing a whole group activity for different abilities of students. The App provides a digital display so that small groups, individuals or partners can play these games at the one time and quickly reset the number line or chart, unlike traditional pocket charts or displays. Some activities are manual allowing for a two player mode or one player against a computer. Stars are awarded for correct answers. After ten stars, students are asked whether they wish to continue playing or return to the front menu. Settings allow the user to decide whether the charts begin at 0 or 1. As with all Little Monkey Apps, this App is designed to be used in conjunction with hands on activities and teacher interaction. Whilst some of the sections or 'modules' can be completed without teacher direction and encourage student-directed learning, our Apps are NEVER designed to be used as a 'learn by yourself' without teacher-student interaction. = Teacher Tool = The teacher tool is designed to be a blank canvas for teachers to use with small groups or individuals . It contains a blank number chart in four levels varying from 0-30 up to 120. The chart has buttons to highlight odds, evens, and counting patterns 2's-10s. Tap to turn on, and tap again to turn off. This tool also includes two coloured pencils and eraser, a camera tool Which can be very useful for recording a learning experience for portfolio planning or to document new learning. The ten less, ten more one less one more 'box flap' can be moved to any number by dragging the middle of the object, then touch the fold down sections to sneak a peek at one more, one less, ten more ten less, useful for place value games. = More or less? = This game utilises the Box Flap to show one more, one less, ten more or ten less. Users asked questions regarding a given number and answer using the calculator keypad. Students may sneak a peek at the answers by tapping to lift the box flap. Four levels 0-30, 0-40, 0-100, 20-120. Users can change the starting number from 0 to 1 using the settings button in the front menu. = Missing numbers = Students are presented with a number chart with missing numbers. They place the missing tiles back into their correct position. Before tablets in the classroom, you might have played this game in the classroom using a hundreds pocket chart (or even an old peg board and nail version). Simply pull a few numbers off, throw them on the floor and ask the students to help you put it back together again. This way, there are no more missing numbers underneath a table! (My classroom had a permanently missing number 33.) Four Levels 0-20, 0-40, 0-100, 20-120. = Number Line = One player and Two Player Higher or Lower Game One player is player vs computer. The student inputs a number on the calculator and the computer replies with higher or lower, highlighting the remaining section of the number line left. Two player. Player One is asked to pick a number, without player two seeing. Player Two plays as if playing an individual game. The computer aids the game by replying higher or lower. = Mystery Numbers = One player and Two Player This game encourages questioning that narrows the range of a mystery number. The computer thinks of a number and gives the range e.g 'I am thinking of a number beteween 1 and 30. Player One must click 'Ask a question'. For example Is your number odd? The computer will reply for example 'No it is not odd' and the tiles that do not match the question fall off. Player One must ask questions UNTIL the only number left is the correct number.

About

Hundreds Chart

Features
Read full description

Four engaging math games to help children learn their multiplication tables. 1. Tables - Step through a times table from 1 to 12. Answer quickly for a perfect score. 2. Patterns - They will learn to recognise what each multiplication table looks like on the Hundreds Chart. 3. Quiz - Test a particular times table by with random questions. 4. Sandbox - Create their own patterns in the sandbox.

Screenshots

Hundreds Chart4 screens

Verdict

The call

The clearest difference is price: Mystery Number at $1.99 against Hundreds Chart's $4.99. Hundreds Chart's advantage is device support (3 vs 1). On update cadence, ads, in-app purchases and iOS requirement there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Mystery Number costs $1.99 and Hundreds Chart $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Mystery Number ships an update every 14 months, Hundreds Chart every 11 months. Both last shipped on November 1, 2026.

Scorecard2 real differences · 7 level
Mystery Number versus Hundreds Chart: the parameters behind the verdict, then further details
ParameterMystery NumberHundreds Chart
Price$1.99 — better$4.99
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 14 monthsEvery 11 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPadiPhone, iPad, iPod — better
Requires iOS13.012.0 — better
Further details — not scored
Size30 MB8 MB
Age rating4+4+
DeveloperAleesha KondysCannonade.Net

In-app purchases

None

Mystery Number

No in-app purchases

None

Hundreds Chart

No in-app purchases

Questions

Is Mystery Number free?
Mystery Number costs $1.99, with no in-app purchases.
Is Hundreds Chart free?
Hundreds Chart costs $4.99, with no in-app purchases.
Do Mystery Number or Hundreds Chart have ads?
Neither Mystery Number nor Hundreds Chart shows ads.
Which is updated more often, Mystery Number or Hundreds Chart?
Mystery Number ships an update every 14 months, and Hundreds Chart every 11 months. Most recently, Mystery Number was updated on November 1, 2026 and Hundreds Chart on November 1, 2026.

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