TEALScript is an open-source tool for developers who want to write Algorand smart contracts in TypeScript instead of low-level TEAL code. It is aimed at programmers building applications on the Algorand blockchain who already work with JavaScript or TypeScript and want to keep the same language across their projects. It does not track balances or prices, so readers looking for a portfolio tool should look elsewhere.
The project is free and its source code lives on GitHub. The latest release is version 0.107.2, and the last code update was recorded on December 16, 2025, so the project is actively maintained and not deprecated. It builds for Windows, but you should check the releases page to see which files are available before you install it.
What Is TEAL and Why Compile From TypeScript?
TEAL is the low-level language that Algorand smart contracts are written in when developers work with it directly. It is compact and precise, but writing long programs in it can be slow and error-prone. A compiler lets you describe the same logic in a higher-level language and produce the TEAL output automatically.
TEALScript takes that approach. Its goal is to let developers write Algorand smart contracts with native TypeScript syntax, so the source file looks like ordinary TypeScript. The compiler can only translate the subset of the language it supports, so anything outside that subset will not work as expected. Reading the documentation before you design a contract will save time.
For a team that already works in TypeScript, this lowers the cost of switching. Developers keep their editor, their habits around types and functions, and their mental model of code structure. They can focus on contract logic instead of low-level stack handling.
Who Is TEALScript For?
TEALScript fits developers who build on Algorand and prefer TypeScript. Typical readers are web developers who already write Node.js or front-end code and want to move into blockchain development without learning a new general-purpose language first. Teams that maintain a TypeScript codebase for a decentralized application frontend may also like keeping contract code in the same language.
Students and hobbyists learning smart contract concepts can use the example methods as a starting point. The sum and difference functions are short enough to read in a few minutes, which makes them useful for seeing how parameters, return values and documentation comments fit together.
It is less suited to people who only want to hold tokens, check balances or follow market prices. TEALScript is for writing contracts, not for managing a wallet or monitoring a portfolio. Those needs are better served by a separate wallet or tracking app.
Reading a Simple TEALScript Example
The documented examples include a function that adds two numbers and returns the result, and another that subtracts the second number from the first. Each has a short comment block describing its parameters and return value, which many editors can display as hints while you type.
The third example combines both operations in one method. It accepts two numbers and an operation argument, then performs addition or subtraction depending on whether the operation is set to sum or difference. This pattern shows how a single entry point can branch on input, a common technique when several related actions share the same inputs.
When you test a method like this, check each branch separately. Pass sum with two numbers, then pass difference with the same numbers, and try an unexpected operation value to see how the code responds. Small arithmetic examples are a good place to learn the workflow before you write logic that controls real assets.
Key features
Native TypeScript Syntax
Compilation Into TEAL
Editor Support Out of the Box
Documented Example Methods
Supported coins
TEALScript targets the Algorand network. The documentation names Algorand as the platform, and the compiled output is TEAL, the language used for Algorand smart contracts. It is not a general tool for other blockchains, so it is best suited to projects that are built on Algorand.
How to install TEALScript on Windows
- 1
Open the Official Release Page
Go to the project's GitHub Releases page, which is the official place to find the code and its published versions. At the time of writing, the latest version is 0.107.2. Download only from the official website or GitHub, and avoid mirrors or repackaged files from other sites.
- 2
Look for Windows Files
The project builds for Windows, so check the release assets first. If a Windows package is offered, use that. If the release only includes source code, follow the build instructions in the repository and install the tools those instructions name before you begin.
- 3
Verify the Download
Before running any file, check its SHA-256 checksum against the value published with the release, or verify the signature if one is provided. The safety section below explains the steps in more detail. Do not run a file that fails verification.
-
Install and Confirm It Works
Run the installer or extract the archive into a folder you control. Open a terminal in that folder and run the tool's help or version command to confirm it starts. If it does not respond, review the release notes and the repository's documentation for setup details.
How to use TEALScript
TEALScript runs inside a development project rather than as a window-based app, so the workflow happens in a folder and a terminal.
- Create a project folder and add a source file with a .ts extension.
- Write your contract logic using the TypeScript syntax the compiler accepts. Start with the sum example to confirm everything is set up.
- Run the compiler on your source file to produce TEAL output.
- Read the generated TEAL and confirm it matches what you intended for each branch.
- Deploy first to the Algorand test network, and move to the main network only after the contract behaves as expected.
Keep each change small and compile after every meaningful edit so errors are easy to trace. Use simple test inputs, such as small whole numbers, so you can check results by hand before trying more complex logic.
Pros & cons
- Uses familiar TypeScript syntax, which lowers the learning curve for web developers
- Free and open source, with the code available on GitHub
- Actively maintained, with the latest code update recorded on December 16, 2025
- Works with any editor that supports TypeScript
- Includes clear example methods that are useful for learning
- Supports only a subset of TypeScript, so some language features are unavailable
- Focused on Algorand and not useful for other blockchains
- Windows support should be checked against the current release files
- Requires understanding of smart contract concepts, so it is not a simple app for everyday users
- Does not track balances, prices or taxes
Is TEALScript safe?
Download TEALScript only from the official GitHub repository or the project's official site. Before running any file, compare its SHA-256 checksum with the value published on the release page, or verify the signature if the project provides one. Because source code is easier to audit than a compiled binary, cautious users can build from the repository in a clean environment. Smart contracts can hold and move real assets, so test thoroughly on a test network before deploying to the main network. The last code update was recorded on December 16, 2025, which suggests active maintenance, but check the latest release notes on the official website before updating. Never enter a seed phrase or private key on a third-party website, including any site that claims to offer a TEALScript add-on.
- Official source only. Download from github.com/algorand-devrel/TEALScript. Ignore ads and lookalike domains.
- Check the SHA-256. Compare the installer hash with the value the developer publishes before running it.
- Never share your seed phrase. No developer, support agent or website — including CryptApps — will ever ask for it.
Alternatives
Most programs in this catalog help people track holdings, calculate taxes or receive price alerts. TEALScript belongs to a different group because it is a development tool for writing Algorand smart contracts. Rotki and Raccoin focus on portfolio accounting and tax reports, and Cardano Monitor sends price notifications for ADA. Hledger handles plain-text accounting, which is useful for keeping records but does not compile code. If your goal is to build contract logic, those tools will not help, and TEALScript is the relevant choice.
Specifications
- Price
- Free
- Type
- Open source
- License
- —
- Latest version
- 0.107.2
- Last update
- 16 Dec 2025
- Windows support
- Likely (builds for Windows; check releases)
- Source code
- github.com/algorand-devrel/TEALScript
Frequently asked questions
Yes. TEALScript is free and open source, and its source code is available on GitHub. There is no price for the compiler itself. Costs you may face come from using the Algorand network, such as transaction fees when you deploy and interact with contracts, and those are separate from the tool.
The project builds for Windows, but Windows support should be confirmed against the current release files. Check the releases page for prebuilt Windows packages or build instructions. If you run into trouble, search the repository's issues section for similar problems before opening a new report.
It is open source, so its code can be inspected, and it is distributed through its GitHub repository. Verify the SHA-256 checksum before running any downloaded file, and avoid third-party copies. The safety section on this page lists the full checklist, including the advice to test contracts on a test network first.
TEAL is the low-level language that Algorand smart contracts run. It is precise but tedious for longer programs. TEALScript lets you write contract logic in TypeScript syntax and then compiles it to TEAL, so you do not have to hand-write every low-level instruction.
No. Only a subset of TypeScript is supported because the compiler must translate each construct into TEAL. Basic functions, parameters, return values and arithmetic are the core of the language. Check the documentation for the exact supported features before designing a contract, and test early to avoid surprises.
No. Because the syntax is native TypeScript, any editor with TypeScript support will highlight code and show type hints. You can start writing contracts in an editor you already use without installing a dedicated plugin.
No. It is a development tool for writing Algorand smart contracts. It does not hold keys, track balances or show market prices. If you want to monitor holdings or taxes, look at the portfolio tools in this catalog instead.
Verdict
TEALScript is a practical choice for developers who know TypeScript and want to write Algorand smart contracts without starting from low-level TEAL. It is free, open source and recently updated, with the latest code change recorded in December 2025. It is not suited to traders, investors or accountants who need balances and tax reports. Before committing to a design, review the TypeScript subset the compiler supports and test your logic on a test network.