ScratchJr vs Twin Code Lab
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ScratchJr
This app allows young children to create their own interactive stories and games by snapping together graphical programming blocks. It fosters problem-solving, creative expression, and develops early numeracy and literacy skills in a fun, motivating context.
- Program interactive stories
- Create games
- Snap-together programming blocks
- Develop problem-solving skills
- Foster creative expression
- Learn coding fundamentals
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With ScratchJr, young children (ages 5-7) learn important new skills as they program their own interactive stories and games. By snapping together graphical programming blocks, children can make characters move, jump, dance, and sing. In the process, children learn to solve problems, design projects, and express themselves creatively on the computer. They also use math and language in a meaningful and motivating context, supporting the development of early-childhood numeracy and literacy. With ScratchJr, children don’t just learn to code, they code to learn. ScratchJr was inspired by the popular Scratch programming language (http://scratch.mit.edu), used by millions of people (ages 8 and up) around the world. The ScratchJr interface and programming language were redesigned to make them appropriate for younger children’s cognitive, personal, social, and emotional development. ScratchJr is a collaboration between the Lifelong Kindergarten research group at the MIT Media Lab, the Developmental Technologies research group at Tufts University, and the Playful Invention Company. The ScratchJr project has received generous financial support from the National Science Foundation (NSF DRL-1118664), Scratch Foundation, LEGO Foundation, and British Telecommunications. If you enjoy using this free app, please consider making a donation to the Scratch Foundation (www.scratchfoundation.org), a nonprofit organization that provides ongoing support for ScratchJr. We appreciate donations of all sizes, large and small.
Twin Code Lab
This app is a programming tool designed to work with specific hardware kits, enabling users to learn coding fundamentals through a visual, drag-and-drop interface. It connects wirelessly to hardware modules, offering pre-made projects and instructions for building and coding creations.
- Visual drag-and-drop coding interface
- Bluetooth connectivity to hardware
- Learn coding fundamentals
- Pre-made project programs
- Building instructions for Twin Kits
- Beginner-friendly yet flexible
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► What is Twin Code Lab? • Twin Code Lab is the official programmer app to use in tandem with Twin Kits. It is not a standalone app. • It’s intended use is for programming projects built with the Twin Coding Kit, Twin Autonomous Vehicle Kit or any Twin building block connected with the Twin Coding Module. ► What does Twin Code Lab offer? • A fun and educational way to learn the fundamentals of coding. • Connect your Twin Coding Module to your phone or tablet using Bluetooth® -- no need for any wires or additional software. • Build and program your creations in the most fun way possible. • Explore ready-made programs and building instructions for Twin Kit projects. • All it takes is three simple steps: BUILD, CODE and PLAY! ► Do you need any prior experience? • No. It is easy-to-use for beginners, yet flexible for advanced coding. • Twin Code Lab is an easy visual coding environment. • Its colourful drag-and-drop canvas is based on Scratch, children targeted block-based visual programming language. • Each coding element is grouped into categories, so you can quickly find what you’re looking for. ► Which kits can you connect to the Twin Code Lab App? • Twin Coding Kit • Twin Autonomous Vehicle Kit • Twin Coding Module (Compatible with each kit and Twin building blocks) ► Learn more about Twin Kits • Go to twinscience.com to get further information about how you can purchase a Twin Kit. ► Stay up to date • LIKE US – facebook.com/twinscience • FOLLOW US – instagram.com/twinscience ► Need help? • We love hearing from our community. Contact us any time: support@twinscience.com ► Policies • Terms of Use: https://twinarcadiamedia.blob.core.windows.net/app-files/onboarding-files/agreements_as_html/en_term_of_use.html • Privacy Policy: https://twinarcadiamedia.blob.core.windows.net/app-files/onboarding-files/agreements_as_html/en_privacy_notice.html
Screenshots
Verdict
The clearest difference is ratings volume: ScratchJr at 1.8K against Twin Code Lab's 7. ScratchJr also leads on iOS requirement (11.0 vs 13.0). Twin Code Lab's advantage is review sentiment (84% vs 67%) and update cadence (every 3 months vs every 6 months). On price, rating, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 3.9 for ScratchJr against 3.9 for Twin Code Lab. That said, the two scores are not equally well evidenced: ScratchJr has 1.8K ratings behind it against 7, so its average is the more settled of the two. Written reviews are what separate them: 67% of ScratchJr's written reviews are positive against 84% of Twin Code Lab's.
ScratchJr ships an update every 6 months, Twin Code Lab every 3 months. The most recent releases landed on October 13, 2026 and October 2, 2026 respectively.
| Parameter | ScratchJr | Twin Code Lab |
|---|---|---|
| Price | Free | Free |
| Rating | 3.9 (1.8K ratings) — better | 3.9 (7 ratings) |
| Positive reviews | 66.8% of reviews | 84.2% of reviews — better |
| Number of ratings | 1.8K — better | 7 |
| Update frequency | Every 6 months | Every 3 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 51 MB | 89 MB |
| Age rating | 4+ | 4+ |
| Developer | Scratch Foundation, Inc. | TWIN YAZILIM MUHENDISLIK SANAYI VE TICARET ANONIM SIRKETI |
Customer experience
ScratchJr
Twin Code Lab
Bugs and requests
ScratchJr
Reported bugs
4 issues- Freezing and crashing issues
- Incorrect character movements and positioning
- Saving and loading problems
- Microphone and recording bugs
Requested features
5 requests- Add more frames/scenes per project
- Improve drawing/editing tools
- Expand color and customization options
- Enhance audio features and sound library
- Integrate with the full Scratch platform
Twin Code Lab
Not enough reviews yet to summarise bugs or requests.
In-app purchases
ScratchJr
No in-app purchases
Twin Code Lab
No in-app purchases
