Comparison

Robo Math Number Line Galaxy vs calculets PRO

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

Head to head
About

Robo Math Number Line Galaxy

This app helps young learners practice fundamental math skills like addition, subtraction, and multiplication using an interactive number line. It features 15 planets to explore and an empty number line for experimentation, aligning with K1-4 and UK KS1/KS2 math curricula.

Highlights
  • 15 planets to explore
  • Addition and subtraction practice
  • Number bond exercises
  • Multiplication support
  • Empty number line for experimentation
  • Aligns with K1-4 and UK KS1/KS2 curriculum
Features
Read full description

Number Line Galaxy includes: * 15 Planets to explore * Simple addition and subtraction, * Number bond practice (1-10 and 1-20), * Multiplication support with adapted number lines, * NEW empty number line to allow kids to experiment with the tool and to use the number line with their everyday math. A number line is a straight, horizontal line with numbers placed at even increments along the length. Based around K1-4 and the new UK KS1 and KS2 Maths National Curriculum, Number Line Galaxy covers; basic addition, number bonds, subtraction and multiplication. Number lines are used in schools all around the world and research has shown the importance of the number line as a tool for helping children develop greater flexibility in mental arithmetic.

About

calculets PRO

A straightforward math game designed to help users practice basic arithmetic operations like addition, subtraction, multiplication, and division. Players combine numbers to reach a target number, offering a fun way to improve foundational math skills.

Highlights
  • Practice addition, subtraction, multiplication, division
  • Combine numbers to reach a target
  • Undo operations feature
  • Multiple difficulty levels
  • Ad-free experience
Features
Read full description

calculets PRO! Very simple maths game for initial arithmetics. Ads free. Practice maths facts: addition, subtraction, multiplication and division. What is this game about? Remember "Letters and Numbers" TV game? "calculets" is a simple, easy version of the Numbers part of "Letters and Numbers" TV show. How to play Calculitos? START: Upon start, after choosing one of the three available levels, you find: - 6 numbers inside bubbles, in the center square - one more "target" number, at bottom right of the display GOAL: You have to reach the "target" number, by combining the bubbles with: + addition - subtraction × multiplication ÷ division DYNAMICS: Drag two bubbles into the box with symbol + and they will be added. And just the same to subtract, multiply or divide: drag the bubbles to the boxes marked with -, × & ÷ . sssshhh... tip: Undo an operation: Double tap a pinky bubble to split it back to the original two bubbles-numbers. Play calculets PRO!

Screenshots

Robo Math Number Line Galaxy4 screens
calculets PRO2 screens

Verdict

The call

Robo Math Number Line Galaxy and calculets PRO both sit at 5.0 stars, but that hides the real split: 25% of Robo Math Number Line Galaxy's written reviews are positive against 0% of calculets PRO's. Robo Math Number Line Galaxy also leads on update cadence (every 2 months vs every 4 months). calculets PRO's advantage is price ($0.99 vs $2.99). On rating, ratings volume, ads and in-app purchases 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

Robo Math Number Line Galaxy costs $2.99 and calculets PRO $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Robo Math Number Line Galaxy against 5.0 for calculets PRO. Both are backed by a comparable volume of ratings — 1 and 1 respectively. Written reviews are what separate them: 25% of Robo Math Number Line Galaxy's written reviews are positive against 0% of calculets PRO's.

UpkeepUpdate frequency

Robo Math Number Line Galaxy ships an update every 2 months, calculets PRO every 4 months. The most recent releases landed on November 1, 2026 and November 2, 2026 respectively.

Scorecard3 real differences · 7 level
Robo Math Number Line Galaxy versus calculets PRO: the parameters behind the verdict, then further details
ParameterRobo Math Number Line Galaxycalculets PRO
Price$2.99$0.99 — better
Rating5.0 (1 ratings)5.0 (1 ratings)
Positive reviews25.0% of reviews — better0.0% of reviews
Number of ratings11
Update frequencyEvery 2 months — betterEvery 4 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.0 — better12.2
Further details — not scored
Size16 MB10 MB
Age rating4+4+
DevelopermadebyeducatorsJaime C. Carriedo

Customer experience

Robo Math Number Line Galaxy

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews8 reviews
Positive25.0%
Neutral0.0%
Negative75.0%

calculets PRO

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

None

Robo Math Number Line Galaxy

No in-app purchases

None

calculets PRO

No in-app purchases

Questions

Is Robo Math Number Line Galaxy free?
Robo Math Number Line Galaxy costs $2.99, with no in-app purchases.
Is calculets PRO free?
calculets PRO costs $0.99, with no in-app purchases.
Which has better reviews, Robo Math Number Line Galaxy or calculets PRO?
Robo Math Number Line Galaxy and calculets PRO are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.
Do Robo Math Number Line Galaxy or calculets PRO have ads?
Neither Robo Math Number Line Galaxy nor calculets PRO shows ads.
Which is updated more often, Robo Math Number Line Galaxy or calculets PRO?
Robo Math Number Line Galaxy ships an update every 2 months, and calculets PRO every 4 months. Most recently, Robo Math Number Line Galaxy was updated on November 1, 2026 and calculets PRO on November 2, 2026.

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