Free
$0
Download and connect your accounts.
Know before the bill.Not after.
AWS, Anthropic and OpenAI spend in one running total. Alerts before you cross a budget. The number on your home screen.
- 01Your total, firstEvery provider's spend, added up into one number.
- 02Alerts before the invoiceA named provider and a real figure. Never "something changed."
- 03Everything in one glanceTotal, budget, trend and providers, stacked on one screen.
OctoberTotal spend this month
$1,284.62
Last checked 14 min ago
Budget $1,50086%
Daily trendOct 1–14
AWS82%$742.18
Anthropic39%$388.40
OpenAI51%$154.04
BERNNnow
AWS passed 80% of budget
$742 of $900, with 17 days left.
BERNN2h ago
OpenAI: unusual day
$41 yesterday, about 3× your daily average.
BERNNOct 9
Anthropic hit $212 this month
You asked to hear at $200.
Three bills.One number.
- Per-provider breakdown under the total
- A daily trend for the month
- Every figure shows when it was checked
Bernn pulls billing from AWS, Anthropic and OpenAI and adds it up. The total comes first. It's the one number that has to make sense at a glance.
AWSchecked 6 h ago$742.18
+Anthropicchecked 22 min ago$388.40
+OpenAIchecked 31 min ago$154.04
AWS 57.8%Anthropic 30.2%OpenAI 12.0%
= October, so far$1,284.62
Budgets that warn early.Not once you're over.
BERNNnow
AWS passed 80% of budget
$742 of $900, with 17 days left.
Set a monthly budget overall or per provider. Bernn tells you on the way up — with the provider and the number in the notification, not a vague "something changed."
- Overall and per-provider budgets
- Unusual-day alerts
- Every alert names a provider and a figure
Your spend,on the home screen.
$1,284
This month · 9:27
bernnChecked 9:129:27$1,261.40$1,284.62
This month · AWS, Anthropic, OpenAI
$1,2849:27The month's total and when it was last checked. iOS decides how often widgets refresh — usually every 15 to 30 minutes — so Bernn shows the time instead of pretending it's live.
- Total spend for the month
- Last-checked time, always visible
- Tap through to the breakdown
Read-only.Always.
Bernn reads billing data. It can't start, stop, change or delete anything in your accounts. That isn't a setting you could get wrong — it's the only access it asks for.
Billing reads only
Access is scoped to cost and usage data. No compute, storage or identity permissions.
Nothing to fat-finger
There is no button in Bernn that acts on your infrastructure. Not hidden, not in settings — not there.
Honest timestamps
Provider billing data lags by design. Every number tells you how old it is.
aws · role policy2 allowed
- ce:GetCostAndUsageallowed
- ce:GetCostForecastallowed
- ec2:RunInstancesnot in policy
- ec2:TerminateInstancesnot in policy
- s3:DeleteObjectnot in policy
- iam:CreateAccessKeynot in policy
- rds:DeleteDBInstancenot in policy
- lambda:UpdateFunctionCodenot in policy
How fresh each number is
AWSabout once a day
Anthropichourly at best
OpenAIhourly at best
Widget15–30 min, set by iOS
Each figure in the app carries its own last-checked time, so a day-old AWS number never passes for a fresh one.
Plain pricing.No per-seat anything.
Start free. Pay monthly, yearly or once. Billed through the App Store, cancel there whenever you like.
Monthly
$4.99/ month
Cancel any time in the App Store.
Yearly Saves 20%
$48/ year
Works out to $4 a month.
Lifetime
$150once
Pay once. Keep it.
Get bernn for iOS
Every plan is read-only. Prices in USD.
The actual app.Tap around.
Not a mockup — the whole app, rebuilt screen for screen from its source. Sign in, walk the onboarding, connect a provider, swipe the card stack, open a tracker, acknowledge an alert. Same copy, same numbers, same tab order.
Bernn
One glance at everything you're burning.
or
Walk the real onboarding — every screen, in the order the app shows them.
Your questions,answered plainly.
No, and Bernn won't pretend it is. AWS billing data updates about once a day; Anthropic and OpenAI are checked hourly at best. Every figure shows when it was last checked, and the widget refreshes when iOS allows — usually every 15 to 30 minutes.
No. Bernn only asks for read access to billing data. It can't start, stop, resize or delete anything, and there's no button in the app that would try.
AWS, Anthropic and OpenAI. That's the set Bernn is built around today.
No. Bernn is a phone app. The point is one number you can check without opening a laptop.
Not by itself. Bernn shows what you're spending and warns you before a budget line. What to change is your call — it's a visibility tool, not an optimizer.
Free to start. Paid plans are $4.99 a month, $48 a year or $150 once, billed through the App Store.
Stop finding outfrom the invoice.
Something missing?Tell us.
Questions, bugs, or a provider you'd like Bernn to support. Replies come by email.
- Setup or access questions
- Bug reports — include your iOS version
- Provider requests