v2.4 — Free tier available

Ship your app. Not your runway.

Push notifications, user analytics, and payment rails wired together in a single SDK drop. Built for technical co-founders who need to be in production before demo day.

// replaces your entire stack
FirebaseMixpanelStripeRevenueCatOneSignal→ LaunchSDK ✓
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50K+ apps · free tier forever
LAUNCHSDK
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One SDK.
Five tools replaced.

Your current stack is 5 SDKs, 5 dashboards, 5 billing accounts, and brittle glue code that breaks every sprint. Here's what that looks like side by side.

Capability
Current Stack
Firebase + Mixpanel + Stripe + RevenueCat + OneSignal
LaunchSDK
Single integration
FREE TIER
Generic Competitor
Partial coverage
Authentication
Auth
spec card
84 LOC320ms
7 LOC42ms
31 LOC180ms

Drop-in auth with GitHub, Apple, Google, and email/password. Sessions portable — your data, your keys. No vendor migration tax.

SDK Impact
+18 kB
Performance
42ms p50
See the Docs →
// LaunchSDK — 7 lines
kwimport/kw { LaunchSDK } kwfrom/kw str'@launchsdk/react-native'/str;
kwconst/kw sdk = kwnew/kw LaunchSDK({ appId: str'YOUR_APP_ID'/str });
// Sign in with GitHub
kwconst/kw user = kwawait/kw sdk.auth.signIn(str'github'/str);
console.log(user.id); // → "usr_abc123"
Push Notifications
Push
spec card
112 LOC410ms
5 LOC38ms
44 LOC210ms

Single API call targets iOS (APNs) and Android (FCM) simultaneously. Includes a real in-app notification feed — not popups, a proper inbox with read/unread state.

SDK Impact
+9 kB
Performance
38ms p50
See the Docs →
// Send to user across all devices
kwawait/kw sdk.push.send({
userId: str'usr_abc123'/str,
title: str'Your build is green 🟢'/str,
body: str'v1.0.0 deployed to TestFlight'/str,
data: { buildId: str'build_xyz'/str },
});
User Analytics
Analytics
spec card
96 LOC> 15 min
3 LOC< 1s

Auto-captures screen views, sessions, and retention cohorts. Custom events stream in under 1 second — see your demo-day metrics update live while you pitch.

SDK Impact
+12 kB
Performance
< 1s real-time
See the Docs →
// Auto-tracked. Plus custom events:
sdk.analytics.track(str'upgrade_modal_viewed'/str, {
plan: str'pro'/str,
source: str'paywall'/str,
sessionDuration: 142, // seconds
});
Payment Rails
Payments
spec card
203 LOC
9 LOC

Stripe under the hood, pre-wired webhooks for subscription lifecycle events. No separate Stripe account setup — one API key, payment intents handled for you.

SDK Impact
+6 kB
Performance
Stripe SLA
See the Docs →
// One-time charge
kwconst/kw charge = kwawait/kw sdk.payments.charge({
userId: str'usr_abc123'/str,
amount: 2900, // cents
currency: str'usd'/str,
description: str'Pro plan — monthly'/str,
});
// Webhook: sdk.payments.onSuccess(handler)
In-App Purchases
IAP
spec card
148 LOC
11 LOC

StoreKit 2 on iOS, Play Billing on Android — single receipt validation endpoint. Subscription status synced to your analytics automatically.

SDK Impact
+8 kB
Performance
Store SLA
See the Docs →
// Restore or purchase
kwconst/kw result = kwawait/kw sdk.iap.purchase(str'pro_monthly'/str);
kwif/kw (result.status === str'active'/str) {
sdk.analytics.track(str'subscription_started'/str, {
productId: str'pro_monthly'/str,
trial: result.isTrial,
});
}
Crash Reporting
Monitoring
spec card
< 2s

Automatic crash capture with symbolicated stack traces. No configuration needed — initialize LaunchSDK once and crashes are captured and linked to user sessions.

SDK Impact
+4 kB
Performance
Auto-enabled
See the Docs →
// Zero config — just init the SDK once:
LaunchSDK.init({ appId: str'YOUR_APP_ID'/str });
// Crashes auto-captured + symbolicated
// Linked to user session & analytics events
// Alert: sdk.monitoring.onCrash(handler)
Total Integration
643 LOC
5 SDKs · 5 dashboards
35 LOC
1 SDK · 1 dashboard
103 LOC
Partial coverage

// 643 lines of integration code → 35 lines. That's the rest of your sprint back.

50K+
Apps Integrated
35
Lines to Ship
99.97%
Uptime SLA
< 1s
Analytics Latency
5 → 1
SDK Consolidation
$0
To Start Building
Marcus Webb profile photo, Indie Maker
Marcus Webb
@marcuswebb
Indie Maker

Replaced 4 SDKs in one afternoon. Shipped the feature I'd been putting off for three weeks.

Priya Nair profile photo, YC W26
Priya Nair
@priyanair_dev
YC W26

Demo day in 11 days. LaunchSDK got payments and push live in a single Saturday session.

Jordan Okafor profile photo, Solo Founder
Jordan Okafor
@jordanokafor
Solo Founder

The comparison table sold me before I even hit the signup. 35 LOC vs 643? Easy call.

Sofia Reyes profile photo, iOS Developer
Sofia Reyes
@sofiareyes_ios
iOS Developer

Analytics are real-time. I watched signups tick up during our ProductHunt launch like a video game.

Arjun Mehta profile photo, Technical Co-founder
Arjun Mehta
@arjunmehta_build
Technical Co-founder

Firebase had us in vendor jail. One weekend migration and we're free. Revenue actually went up.

Leila Zhang profile photo, Accelerator Cohort
Leila Zhang
@leilazhang_pm
Accelerator Cohort

Crash reporting included at zero config? That alone saved us a Sentry subscription.

Marcus Webb profile photo, Indie Maker
Marcus Webb
@marcuswebb
Indie Maker

Replaced 4 SDKs in one afternoon. Shipped the feature I'd been putting off for three weeks.

Priya Nair profile photo, YC W26
Priya Nair
@priyanair_dev
YC W26

Demo day in 11 days. LaunchSDK got payments and push live in a single Saturday session.

Jordan Okafor profile photo, Solo Founder
Jordan Okafor
@jordanokafor
Solo Founder

The comparison table sold me before I even hit the signup. 35 LOC vs 643? Easy call.

Sofia Reyes profile photo, iOS Developer
Sofia Reyes
@sofiareyes_ios
iOS Developer

Analytics are real-time. I watched signups tick up during our ProductHunt launch like a video game.

Arjun Mehta profile photo, Technical Co-founder
Arjun Mehta
@arjunmehta_build
Technical Co-founder

Firebase had us in vendor jail. One weekend migration and we're free. Revenue actually went up.

Leila Zhang profile photo, Accelerator Cohort
Leila Zhang
@leilazhang_pm
Accelerator Cohort

Crash reporting included at zero config? That alone saved us a Sentry subscription.

The simulator just lit up green.

That electric exhale when momentum becomes real. Start with the free tier — push notifications, analytics, and payments wired in under an hour.

Free
$0forever
  • 10K push/month
  • 5K analytics events/day
  • Community support
  • 1 app
Start Free
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Builder
$29/month
  • 500K push/month
  • Unlimited events
  • Email support
  • 3 apps
  • Crash reporting
Start Building
Scale
$99/month
  • Unlimited push
  • Unlimited events
  • Priority support
  • Unlimited apps
  • SLA 99.97%
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