Hey everyone :wave: I just released <https://gith...

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[Olúwáṣeun Ṣóbándé]

Hey everyone 👋

I just released ìkọkúkọ a reactive, type-safe form validation library for Compose Multiplatform (Android & iOS).
It’s built entirely with Kotlin and designed to make form validation declarative, reactive, and easy to reason about across both platforms.

https://github.com/quantipixels/ikokuko

✨ What it does
• ✅ Reactive validation using Compose state
• ✅ Type-safe fields and validators (e.g., Field.Text, Field.Boolean)
• ✅ Works seamlessly with Compose Multiplatform UI
• ✅ Built for Android + iOS (and ready for desktop/web later)
• Supports common validators like:
• RequiredValidator
• EmailValidator
• MinLengthValidator
• Custom validators
Quick example

val PasswordField = Field.Text("password")

Form(onSubmit = { println(PasswordField.value) }) {
    FormField(
        field = PasswordField,
        default = "",
        validators = listOf(
            RequiredValidator("Password required"),
            MinLengthValidator("At least 8 characters", 8))
        ) {
            OutlinedTextField(
                value = PasswordField.value,
                isError = !PasswordField.isValid,
                label = { Text("Password") },
                supportingText = PasswordField.error?.let { { Text(it, color = MaterialTheme.colorScheme.error) } },
                onValueChange = { PasswordField.value = it }
            )
    }
    Button(onClick = ::submit) { Text("Sign Up") }
}

Looking for feedback

Since this is the first public release, I’d love to hear your thoughts:
• Does the API feel Kotlin-y enough?
• Anything confusing or repetitive about validation setup?
• Any missing validators or form patterns you’d expect?
• Would you use it in your Compose Multiplatform projects?
If you’ve tried it, even brief feedback or suggestions (naming, ergonomics, new ideas) would be hugely appreciated ❤️

Here's a demo video of the sample app in action.

itokuto validation demo.mp4

[Kirill Grouchnikov]

Should this have a Field.Password variant to match the expected interactive visuals of typing a password?

[Olúwáṣeun Ṣóbándé]

Field class is just for input types (String, Long, Boolean, etc), not visuals related.

Redacting a password input is up to the developer via the normal PasswordVisualTransformation on a compose TextField.

OutlinedTextField(
                value = PasswordField.value,
                isError = !PasswordField.isValid,
                label = { Text("Password") },
                supportingText = PasswordField.error?.let { { Text(it, color = MaterialTheme.colorScheme.error) } },
                onValueChange = { PasswordField.value = it },
                visualTransformation = PasswordVisualTransformation()
            )

[Kirill Grouchnikov]

I'd suggest incorporating this into your demo video for the password field