The short answer
A charge from SENTRY.IO* INC is an application performance and error monitoring subscription from Functional Software, Inc. (Sentry).
Why it shows up like this
An invoice line reading SENTRY.IO* INC represents a software subscription charge for application performance monitoring and crash tracking from Functional Software, Inc. This billing descriptor covers usage tiers for Sentry, a developer tool utilized by engineering teams to capture runtime exceptions, code errors, and performance traces across production web and mobile applications.
This charge typically appears on credit card statements because a monthly subscription tier converted from a trial period, or because an application experienced an unexpected surge in exception events that exceeded standard monthly event quotas. When software applications encounter infinite error loops or sudden traffic spikes, metered usage plans automatically apply overage fees or bill for higher volume tiers at the conclusion of the billing cycle.
To review billing records or modify your subscription, log in to your developer workspace on the official Sentry platform and navigate to the subscription settings menu. From there, you can inspect detailed event logs, adjust monthly quota caps, or downgrade your organization to the free Developer plan. If a sudden error spike caused an unexpected overage charge, contacting customer support promptly can often result in a one-time account credit.
Don’t recognize it? Common scenarios
- A company software engineer added error monitoring to a production mobile or web app.
- An unexpected surge in application exceptions created high event volume that triggered on-demand overage charges.
- A 14-day Business trial converted automatically into a paid monthly contract.
How to locate the invoice and cancel
- Log in to Sentry Open sentry.io and sign in to your developer workspace.
- Review Subscription Settings review to Settings > Subscription to view your current tier, event caps, and billing history.
- Adjust or Downgrade Plan Click Change Plan to downgrade to the free Developer plan.
Frequently Asked Questions
How can I avoid spike charges from error loops in Sentry?
Configure spike protection and dynamic event sampling within your Sentry organization settings to drop redundant error events before they incur fees.
Can I receive a refund if an infinite error loop caused a large bill?
Sentry support evaluates sudden error spikes upon request and may offer one-time account credits if configured promptly.
Independent reference — not affiliated with Functional Software, Inc.. Billing names and policies change; verify with the merchant or your bank before acting.
Verified sources
Every claim on this page is checked against official sources — open them to confirm before you call your bank.
- Sentry Pricing and Billing Documentation https://docs.sentry.io
- CFPB: Disputing Credit Card Charges https://www.consumerfinance.gov
Reviewed Aug 15, 2026 · high · About UnknownCharges