Comparison

CB1 Blockly vs TT Math 4

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

Head to head
About

CB1 Blockly

This app enables users to program robots built with a specific engineering kit. It uses a visual, drag-and-drop interface to create commands that control motors, lights, and sounds based on sensor input.

Highlights
  • Visual programming with drag-and-drop blocks
  • Control motors, LEDs, and buzzer
  • Utilize various sensor inputs
  • Bluetooth connectivity to robots
  • Save up to 20 custom programs
  • Includes 10 preloaded demo programs
Features
Read full description

CB1 Blockly Programming App for Robotics Workshop For use with the engineering kit “Robotics Workshop” by Thames & Kosmos CB1 Blockly is a visual programming app based on Blockly. It allows you to write programs to control the robots you build with the Robotics Workshop kit. You can write visual programs with drag-and-drop code blocks in the app and then send the programs to the CB1 core controller on your robot models to make the motors turn, the buzzer sound, and the LEDs flash. You can write programs that use sensor input from the light sensor, sound sensor, distance (ultrasonic) sensor, and touch sensors to command your robots to interact with their environments. App Features • Connect to your models via Bluetooth connection. • Programming mode lets you script and save up to 20 programs. • Ten demo programs are preloaded to work specifically with the ten robot models in the kit. • A simple, visual programming language lets you use input data from two touch sensors, distance (ultrasonic) sensor, light sensor, sound sensor, and variable resistor knob to control four motors, 2 LEDs, and speaker. • Use the 64-page, step-by-step illustrated manual included in the kit to learn how to build the models and write the programs.

About

TT Math 4

This educational app provides interactive math lessons and practice problems for 4th graders. It offers automated grading, step-by-step explanations, and parental controls for progress tracking. The app allows for offline use of up to six lessons, making it ideal for on-the-go learning.

Highlights
  • 119 audiovisual lectures
  • Thousands of practice problems
  • Automated grading
  • Step-by-step audiovisual explanations
  • Parental progress tracking
  • Offline lesson access (up to 6)
Read full description

The Teaching Textbooks Math 4 app makes your TT course even better! Not only will your student enjoy math while learning independently, but, with the app, that learning can also take place on the go. Even when offline! Specifically, the app can be used offline for up to 6 lessons at a time. That makes it perfect for homeschool parents who need their kids to stay productive while the family is out and about during the day. The app’s other features include… • 119 audiovisual lectures that teach every core concept in the standard 4th grade curriculum • thousands of problems that give students all the practice they need to master each concept • automated grading and instant feedback for every single problem • step-by-step audiovisual explanations to every single problem so students can see exactly what they did wrong when mistakes are made (This makes the program feel as if a tutor is at the student’s side!) • parental controls that let you track your student’s progress • the digitized version of the printed Teaching Textbooks Math 4 textbook (with a search feature and a hyper-linked index) • no advertising or in-app purchase offers • Internet connectivity is required, but you can remain offline for up to 6 lessons.

Screenshots

TT Math 44 screens

Verdict

The call

The clearest difference is review sentiment: TT Math 4 at 37% against CB1 Blockly's 17%. TT Math 4 also leads on rating (3.5 vs 3.3) and ratings volume (83 vs 15). On price, update cadence, 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

TT Math 4 holds the better App Store score, 3.5 against 3.3. That said, the two scores are not equally well evidenced: TT Math 4 has 83 ratings behind it against 15, so its average is the more settled of the two. Written reviews point the same way: 17% of CB1 Blockly's written reviews are positive against 37% of TT Math 4's.

UpkeepUpdate frequency

CB1 Blockly ships an update every 4 weeks, TT Math 4 every 2 months. The most recent releases landed on October 15, 2026 and October 14, 2026 respectively.

Scorecard4 real differences · 6 level
CB1 Blockly versus TT Math 4: the parameters behind the verdict, then further details
ParameterCB1 BlocklyTT Math 4
PriceFreeFree
Rating3.3 (15 ratings)3.5 (83 ratings) — better
Positive reviews16.7% of reviews37.3% of reviews — better
Number of ratings1583 — better
Update frequencyEvery 4 weeks — betterEvery 2 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPadiPhone, iPad, iPod, Mac — better
Requires iOS11.0 — better12.0
Further details — not scored
Size3 MB110 MB
Age rating4+4+
DeveloperT2T Inc.Teaching Textbooks, Inc.

Customer experience

CB1 Blockly

All ratings13 ratings
Positive53.8%
Neutral0.0%
Negative46.2%
Written reviews6 reviews
Positive16.7%
Neutral0.0%
Negative83.3%

TT Math 4

All ratings83 ratings
Positive61.4%
Neutral6.0%
Negative32.5%
Written reviews51 reviews
Positive37.3%
Neutral5.9%
Negative56.9%

Bugs and requests

CB1 Blockly

Not enough reviews yet to summarise bugs or requests.

TT Math 4

Reported bugs

17 issues
  • Update won't save answers
  • App closes itself out
  • Problems with the scratchpad/scrolling
  • Missing letters when typing passwords
  • App freezes when downloading lesson content
Show 12 more
  • App crashes frequently
  • App lags frequently
  • App is slow
  • App freezes
  • App glitches
  • Cannot print lessons or grade books from the app
  • Does not let you log in
  • Answers are marked wrong when they are correct
  • Inputting answers is incorrect (e.g., 140 shows as 14)
  • One wrong answer makes the whole thing wrong
  • Cannot use the keyboard to input answers
  • Laggy math4

Requested features

6 requests
  • Make it more fun
  • Only have a lecture, then go straight to problems
  • Allow keyboard use on iPad
  • Make it harder for advanced students
  • Remove discouraging phrases like 'you are officially amazing'
Show 1 more
  • Give a second chance on multiple choice problems

In-app purchases

None

CB1 Blockly

No in-app purchases

None

TT Math 4

No in-app purchases

Questions

Is CB1 Blockly free?
CB1 Blockly is free to download, with no in-app purchases.
Is TT Math 4 free?
TT Math 4 is free to download, with no in-app purchases.
Which has better reviews, CB1 Blockly or TT Math 4?
TT Math 4 is rated higher. CB1 Blockly averages 3.3 out of 5 from 15 ratings, while TT Math 4 averages 3.5 from 83 ratings.
Do CB1 Blockly or TT Math 4 have ads?
Neither CB1 Blockly nor TT Math 4 shows ads.
Which is updated more often, CB1 Blockly or TT Math 4?
CB1 Blockly ships an update every 4 weeks, and TT Math 4 every 2 months. Most recently, CB1 Blockly was updated on October 15, 2026 and TT Math 4 on October 14, 2026.

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