Early access — first 100 users get 50% off forever

Your AWS bill just spiked.
Did you notice?

StackAlert sends your team a Slack message the moment AWS costs spike — before the bill arrives. For teams spending $1k–$20k/month on AWS.

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StackAlert
App · just now
⚠️ Cost Spike Detected — EC2 (eu-west-1)

Your EC2 spend jumped +312% in the last 6 hours compared to your 7-day average.

7-day avg
$18.40/day
Today so far
$75.20
Top culprit
i3.2xlarge

Real Slack notification · Sent within 6 hours of the spike

Trusted by engineers who've been burned by AWS bills

GDPR compliant · EU data residency
Read-only IAM · open-source Lambda
60-second setup · no YAML

The problem

AWS billing tools were built for enterprise.
Not for your team.

"

A few years ago my startup was killed by an AWS mistake that ran overnight. We had no idea until the bill arrived.

Hacker News · 2023 · 847 upvotes
"

AWS billed me 700% more than expected after an RDS version upgrade. I only found out at the end of the month.

Hacker News · Dec 2025

The tooling gap is huge:

😤
AWS Native
Free but clunky. Email alerts. No Slack. No context.
Gap
✨
€19–49/month
Simple Slack alerts, no dashboards to learn. This is StackAlert.
🏢
CloudZero / nOps
$500–$2,000/month. Built for 100+ engineer orgs.

Why StackAlert

AWS cost control that lives in Slack

Instant spike alerts in Slack

The moment any AWS service spends 50%+ more than its 7-day average, your team gets a Slack message. With the culprit service, the extra cost, and a link to investigate — not just "something happened."

Daily digest

Every morning: yesterday's spend, top 5 services, vs. last week. 30 seconds to read, zero dashboards.

Read-only & auditable

One CloudFormation template. Read-only IAM role. The Lambda function is open-source — audit exactly what we access.

EU data residency · GDPR compliant

All data processed and stored in the EU (Frankfurt region). German-language support available. Compliant with GDPR out of the box — no US data transfer concerns. US tools like CloudZero don't offer this.

Setup

Up and running in 60 seconds

No YAML. No dashboards. No agents to install.

1

Connect your AWS account

Click the CloudFormation link. A read-only IAM role is created in your account in under 30 seconds. No credentials to manage.

aws cloudformation deploy --template-url stackalert-role.yaml
2

Add StackAlert to Slack

One OAuth click. Choose which channel gets alerts. Done. Your team is now connected.

3

Get alerted when it matters

Every 6 hours, StackAlert checks your spend against your baseline. If anything spikes, your team gets a Slack message — with context, not just a number.

Built by someone who's been burned

"I've spent 10 years managing AWS infrastructure. I've seen teams lose thousands to runaway Lambda functions, forgotten NAT gateways, and dev environments left running over a long weekend. I built StackAlert because AWS Budgets doesn't cut it — and no one should pay $500/month for basic cost awareness."
Alex Z.
AWS DevOps Engineer · Hamburg, Germany

Pricing

Simple, transparent pricing

Early access: 50% off for first 100 users. Locked in forever.

Alle Preise inkl. MwSt. · All prices include VAT

Solo
1 AWS account, 1 user
€9 €4 /month
Early access price
  • 1 AWS account
  • Spike alerts in Slack
  • Daily digest
  • 6-hour check interval
Join waitlist
Most popular
Team
3 AWS accounts, 5 users
€29 €14 /month
Early access price
  • 3 AWS accounts
  • Up to 5 Slack users
  • Per-tag & per-service alerts
  • 1-hour check interval
  • Monthly report PDF
Join waitlist
Studio
10 accounts, unlimited users
€79 €39 /month
Early access price
  • 10 AWS accounts
  • Unlimited Slack users
  • Custom alert thresholds
  • 15-min check interval
  • Priority support (DE/EN)
Join waitlist

Early access

Be the first to know when we launch

Join the waitlist and get 50% off forever as a founding member. We're targeting a Q2 2026 launch.

Or email directly: hello@stackalert.app

No spam No credit card Unsubscribe anytime

Questions

Frequently asked questions

Is it safe to give StackAlert access to my AWS account?
Yes. StackAlert uses a read-only IAM role — it can only read Cost Explorer data, never make changes. The exact Lambda function is open-source on GitHub, so you can audit every line of code. We also follow the principle of least privilege: the role is scoped to only the Cost Explorer API calls we need.
What AWS services does StackAlert monitor?
All AWS services are monitored by default — EC2, RDS, Lambda, S3, CloudFront, Data Transfer, and everything else. You can configure alerts per service, per region, or per resource tag. The daily digest always shows your top 5 cost drivers.
I already have AWS Budgets set up. Why do I need this?
AWS Budgets sends emails when you cross a monthly threshold — that's too late. StackAlert checks every 6 hours, detects unusual spending patterns early, and delivers context (which service, which region, what changed) directly in Slack where your team already works. It's designed to stop surprises, not report on them.
Is my billing data stored in the EU? (GDPR)
Yes. All data is processed and stored in AWS Frankfurt (eu-central-1). We are GDPR compliant and do not transfer data outside the EU. A Data Processing Agreement (DPA) is available on request.
When will StackAlert launch?
We're targeting Q2 2026. Waitlist members will get access first and lock in the 50% early access pricing. We'll send one email when it's ready — no spam in between.

Stop finding out about AWS spikes from your invoice.

Join the waitlist and get 50% off as a founding member.

Get early access — free
Get early access — free