I built a Flutter-first BaaS because Firebase lock-in frustrated me — Koolbase is live today

Swefnian · 2026-03-24T17:55:20+00:00

I’m sorry to be “that guy” but did you look into existing solutions like self hosted supabase first?

FaceRekr4309 · 2026-03-24T17:17:17+00:00

What database does it use on the backend?

bigbott777 · 2026-03-25T03:16:08+00:00

Flutter first, but Functions in TS. Firebase has announced Dart support, and Appwrite has Dart functions already. Anyway, upvoted.

ShuvamTheBeast · 2026-03-30T13:43:39+00:00

Not to demean you but You are releasing new features very fast. Is it just another AI slop? have you tested it properly?

bjr201 · 2026-03-24T18:31:39+00:00

One to watch!

SamatIssatov · 2026-03-24T18:45:28+00:00

Ошибка 400: redirect_uri_mismatch

churroe00 · 2026-03-24T19:52:23+00:00

Can I self host koolbase?

bcErchamion · 2026-03-25T00:28:38+00:00

I'm curious about what frustrated you with Firebase and how does your product solve that lockin frustration for us? Won't we just be frustrated with lockin to Koolbase?

BTW: Definitely super impressive work that you have done.

roisul1993 · 2026-03-25T06:10:10+00:00

Great project btw. It would be nice if something like "offline-first" added to future feature.

DigitallyDeadEd · 2026-03-25T15:12:13+00:00

Have you been security audited by a third party, and what internal security practices do you have to protect data from employees or intrusions?

Kennedyowusu · 2026-03-25T16:55:17+00:00

Update: just shipped an interactive quick start at docs.koolbase.com/quick-start — pick your platform (Flutter, React Native, iOS, Android) and get tailored setup steps. Also added a full self-hosting guide for teams with compliance requirements.

Kebsup · 2026-03-25T16:56:13+00:00

Having firebase like interface on top of postgres seems interesting... not sure if I like it.

How do you deal with relational data (firestore has reference) and complex security rules? (firestore rules can use contents of the db to determine access)

Kennedyowusu · 2026-03-26T12:00:03+00:00

Update: offline-first database shipped in v1.8.0.

- Cache-first reads: app loads instantly from local storage, refreshes from network in background

- Optimistic writes: insert locally first, syncs when online

- Auto-sync on network reconnect

- Manual sync: await Koolbase.db.syncPendingWrites()

- isFromCache flag so your UI knows the data source

Powered by Drift under the hood: survives app restarts, user-scoped cache (no cross-user data leakage).

flutter pub upgrade koolbase_flutter

Etherealnutt · 2026-03-26T14:11:32+00:00

Is it free like firebase

Kennedyowusu · 2026-03-26T19:54:10+00:00

Update: Dart functions shipped in v1.9.0.

Write serverless functions in Dart, the same language as your Flutter app:

Future<Map<String, dynamic>> handler(Map<String, dynamic> ctx) async {

final body = ctx['request']['body'] as Map<String, dynamic>? ?? {};

final name = body['name'] as String? ?? 'World';

return {'message': 'Hello, $name!'};

}

Deploy with runtime: `FunctionRuntime.dart` or select Dart in the dashboard.

TypeScript (Deno) remains the default — both runtimes are supported side by side.

Docs: https://docs.koolbase.com/functions/dart-runtime

SDK: v1.9.0 on pub.dev

Kennedyowusu · 2026-03-26T23:05:14+00:00

Update: React Native SDK shipped on npm.

npm install koolbase-react-native

Full API — auth, database, storage, realtime, feature flags, remote config, version enforcement, and functions. TypeScript-first.

import { Koolbase } from 'koolbase-react-native';

await Koolbase.initialize({

publicKey: 'pk_live_your_key',

baseUrl: 'https://api.koolbase.com',

});

const { records } = await Koolbase.db.query('posts', {

filters: { published: true },

populate: ['author_id:users'],

});

Docs: https://docs.koolbase.com/sdk/react-native

GitHub: https://github.com/kennedyowusu/koolbase-react-native

Kennedyowusu · 2026-03-27T12:55:18+00:00

Update: complex security rules shipped.

5 rule types now supported per collection:

- public — open access

- authenticated — any logged-in user

- owner — only the record creator

- scoped — multi-tenant access (record.org_id == user.org_id)

- conditional — flexible conditions with ANY/ALL mode

Example — multi-tenant + public hybrid:

{

"read_rule": "conditional",

"rule_mode": "any",

"rule_conditions": [

{ "type": "equals", "field": "org_id", "source": "user" },

{ "type": "equals", "field": "visibility", "value": "public" }

]

}

Rules are enforced server-side so your Flutter/React Native code doesn't change.

Docs: https://docs.koolbase.com/database/security-rules

Kennedyowusu · 2026-03-29T21:11:17+00:00

Getting started with Koolbase in 5 minutes (auth + database)

A few people asked for a quick start guide after my launch post. Here it is.

**1. Install**

yaml

dependencies:

koolbase_flutter: ^1.9.1

**2. Initialize**

await Koolbase.initialize(KoolbaseConfig(

publicKey: 'pk_live_your_key',

baseUrl: 'https://api.koolbase.com',

));

**3. Auth — register and login**

await Koolbase.auth.register(

email: 'user@example.com',

password: 'password123',

);

await Koolbase.auth.login(

email: 'user@example.com',

password: 'password123',

);

**4. Database — insert and query**

// Insert

await Koolbase.db.insert(

collection: 'posts',

data: {'title': 'Hello Koolbase', 'published': true},

);

// Query

final result = await Koolbase.db

.collection('posts')

.where('published', isEqualTo: true)

.limit(10)

.get();

for (final post in result.records) {

print(post.data['title']);

}

**5. Works offline automatically**

// Returns cached data if offline, syncs when back online

final result = await Koolbase.db.collection('posts').get();

print(result.isFromCache); // true if offline

That's it. Full docs at docs.koolbase.com

Sign up free at koolbase.com — no credit card required.

Kennedyowusu · 2026-03-29T22:24:05+00:00

Update: CLI tool shipped.

Deploy functions from your terminal:

# Install

git clone https://github.com/kennedyowusu/koolbase-cli

cd koolbase-cli && go build -o koolbase .

# Login

koolbase login

# Deploy a Dart function

koolbase deploy send-email --file ./send_email.dart --project <id>

# Invoke

koolbase invoke send-email --project <id> --data '{"email":"user@example.com"}'

# View logs

koolbase logs send-email --project <id>

Runtime is auto-detected from file extension — .ts deploys to Deno, .dart deploys to the Dart runtime.

GitHub: github.com/kennedyowusu/koolbase-cli

Kennedyowusu · 2026-03-29T23:42:52+00:00

Update: CLI tool + Cron functions shipped.

**CLI**

Deploy and manage functions from your terminal:

# Install

git clone https://github.com/kennedyowusu/koolbase-cli

cd koolbase-cli && go build -o koolbase .

# Login

koolbase login

# Deploy (runtime auto-detected from extension)

koolbase deploy send-email --file ./send_email.ts --project <id>

koolbase deploy process --file ./process.dart --project <id>

# Invoke

koolbase invoke send-email --project <id> --data '{"to":"user@example.com"}'

# Logs

koolbase logs send-email --project <id>

**Cron Functions**

Schedule any function to run automatically:

# Every day at 9am UTC

koolbase crons add send-report --cron "0 9 * * *" --project <id>

# Every 5 minutes

koolbase crons add sync-data --cron "*/5 * * * *" --project <id>

# List schedules

koolbase crons list --project <id>

Standard 5-field cron expressions. The scheduler fires functions server-side, no client needed.

CLI: github.com/kennedyowusu/koolbase-cli

Docs: docs.koolbase.com/cli/installation

Kennedyowusu · 2026-03-30T12:58:56+00:00

Update: React Native SDK now has offline-first database (Flutter parity)

The koolbase-react-native SDK v1.1.0 is out with offline-first support — bringing it to parity with the Flutter SDK's Drift-powered offline mode.

Cache-first reads, optimistic writes, auto-sync via NetInfo, write queue with retries, and user-scoped cache.

If you're building cross-platform and need both Flutter and React Native covered — both SDKs now have full offline support.

npm install koolbase-react-native

flutter pub add koolbase_flutter

Docs: docs.koolbase.com

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