Comparison

Blue vs Coding Express LEGO® Education

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

Head to head
About

Blue

This app allows children to create and execute algorithms for a robot. It offers step-by-step and drag-and-drop programming, with features like repeats and 45-degree turns. Challenge modes introduce obstacles and limited controls for added difficulty.

Highlights
  • Step-by-step programming
  • Drag and drop interface
  • Repeat commands
  • 45-degree turns
  • Obstacle challenges
  • Customizable voice commands
Features
Read full description

Blue-Bot is one of the many loved members of the TTS Floor Robot family. The Blue-Bot app enables you to write an algorithm, send it and then Blue-Bot will follow your instructions. There are numerous features, which make writing algorithms both fun and educational. Use explore mode to develop algorithms: Step by step programming. Drag and drop programming. Include repeats to add efficiency. Program 45 degree turns. Challenge mode will add complexity into the algorithm: Blue-Bot will add random obstacles, adding complexity to the algorithm needed One or even two directional buttons can be removed Children can also record themselves saying a command and can assign it to a button on Blue-Bot. As the algorithm progresses, they will hear themselves giving the instructions. Please note to control a Blue-Bot floor robot your device must have Bluetooth.

About

Coding Express LEGO® Education

This app introduces preschoolers to early coding concepts and 21st-century skills using a LEGO DUPLO train set. It offers four engaging activity areas: Journeys, Characters, Math, and Music, fostering problem-solving, collaboration, and creativity.

Highlights
  • Early coding concepts for preschoolers
  • LEGO DUPLO train set integration
  • Four activity areas: Journeys, Characters, Math, Music
  • Develops sequencing, problem-solving, and collaboration
  • Teacher guides and lesson plans included
  • Supports social and emotional development
Read full description

All on board the Coding Express! Coding Express LEGO® Education introduces early coding concepts and 21st century skills to preschoolers. Using the popular LEGO® DUPLO® train set, teacher guide and an easy-to-use app, preschool teachers have all they need to teach early coding concepts. TEACHER QUOTES “I have never seen anything like Coding Express and I am very intrigued with its structure and the varying ways it can teach children specific skills they might not have gained through play before. I love its versatility and how the many different areas of play will keep most children occupied for a very long time.” Kate, preschool teacher, USA “Coding Express gives preschoolers a very different learning experience. Building different shapes with the train track helps them to understand the coding concept and combined with the educational activities and teacher material it makes early coding intuitive, fun and educational. The app enhances the experience and it gives the early learners more ways to learn about coding.” Wenting, pre-school and kindergarten teacher, China With the Coding Express app and LEGO® DUPLO® solution you will get: • 234 LEGO® DUPLO® bricks, including Push & Go train with lights and sounds, motor, color sensor, 5 color-coded action bricks, 2 railroad switches and 3.8 meters of train track • Teaching materials that includes 8 online lessons, introduction guide, poster, 3 building inspiration cards for building 12 unique models, 5 getting started activities and 8 simple video tutorials • Free app featuring 4 fun and educational activity areas, including: o Journeys: Explore destinations and traffic signs. Learn about the sequencing of events, making predictions, planning and problem solving. Characters: Support children’s social and emotional development. Children identify and examine the feelings of characters, considering the consequences for others. Math: Explore and understand how to measure, estimate distance and identify numbers. Music: Learn about sequencing and looping. Compose simple melodies, explore different animal and instruments sounds. • Key learning values include sequencing, looping, conditional coding, problem solving, critical thinking, collaboration, language and literacy, and expressing ideas with digital elements • Teaching solution and early coding toy for preschool children 2-5 years old; Developed using science, math and technology from the National Association for the Education of Young Children (NAEYC) and the 21st Century Early Learning Framework (P21 ELF) and the Head Start Early Learning Outcomes Framework. *** IMPORTANT*** This is not a standalone educational app. This app is used to program the LEGO® Education Coding Express set, which is sold separately. Please contact your local LEGO Education reseller for further information. Getting Started: www.legoeducation.com/codingexpress Lesson Plans: www.legoeducation.com/lessons/codingexpress Support: www.lego.com/service Twitter: www.twitter.com/lego_education Facebook: www.facebook.com/LEGOeducationNorthAmerica Instagram: www.instagram.com/legoeducation Pinterest: www.pinterest.com/legoeducation LEGO, the LEGO logo and DUPLO are trademarks and/or copyrights of the LEGO Group. ©2024 The LEGO Group. All rights reserved.

Screenshots

Blue4 screens

Verdict

The call

The clearest difference is rating: Coding Express LEGO® Education at 4.2 against Blue's 3.7. Coding Express LEGO® Education also leads on ratings volume (250 vs 7). Blue's advantage is update cadence (every 3 months vs every 8 months) and device support (3 vs 1). On price, review sentiment, 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

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Coding Express LEGO® Education holds the better App Store score, 4.2 against 3.7. That said, the two scores are not equally well evidenced: Coding Express LEGO® Education has 250 ratings behind it against 7, so its average is the more settled of the two. Written reviews point the same way: 43% of Blue's written reviews are positive against 50% of Coding Express LEGO® Education's.

UpkeepUpdate frequency

Blue ships an update every 3 months, Coding Express LEGO® Education every 8 months. The most recent releases landed on September 24, 2026 and October 7, 2026 respectively.

Scorecard5 real differences · 5 level
Blue versus Coding Express LEGO® Education: the parameters behind the verdict, then further details
ParameterBlueCoding Express LEGO® Education
PriceFreeFree
Rating3.7 (7 ratings)4.2 (250 ratings) — better
Positive reviews42.9% of reviews50.0% of reviews — better
Number of ratings7250 — better
Update frequencyEvery 3 months — betterEvery 8 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPod — betteriPad
Requires iOS12.4 — better15.0
Further details — not scored
Size130 MB855 MB
Age rating4+4+
DeveloperTTS Group LimitedLEGO Education

Customer experience

Blue

All ratings7 ratings
Positive71.4%
Neutral0.0%
Negative28.6%
Written reviews7 reviews
Positive42.9%
Neutral14.3%
Negative42.9%

Coding Express LEGO® Education

All ratings250 ratings
Positive78.4%
Neutral9.6%
Negative12.0%
Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

In-app purchases

None

Blue

No in-app purchases

None

Coding Express LEGO® Education

No in-app purchases

Questions

Is Blue free?
Blue is free to download, with no in-app purchases.
Is Coding Express LEGO® Education free?
Coding Express LEGO® Education is free to download, with no in-app purchases.
Which has better reviews, Blue or Coding Express LEGO® Education?
Coding Express LEGO® Education is rated higher. Blue averages 3.7 out of 5 from 7 ratings, while Coding Express LEGO® Education averages 4.2 from 250 ratings.
Do Blue or Coding Express LEGO® Education have ads?
Neither Blue nor Coding Express LEGO® Education shows ads.
Which is updated more often, Blue or Coding Express LEGO® Education?
Blue ships an update every 3 months, and Coding Express LEGO® Education every 8 months. Most recently, Blue was updated on September 24, 2026 and Coding Express LEGO® Education on October 7, 2026.

Other comparisons