error monitoring tool · AppSignal B.V.

AppSignal

Error tracking bundled with performance monitoring, priced by requests in euros, with a free plan and unlimited users on every plan.

55/100

#9 of 12 error monitoring tools
Facts checked 9 Oct 2026

In short

The paid plan costs €219 a year (€18.25 a month) for 250,000 requests a month, with unlimited users¹.
The free plan allows 30,000 requests a month with 5-day retention¹.
Stack traces for exceptions are kept for at least 30 days¹.
AppSignal says its data sits in ISO 27001 certified facilities in the Netherlands¹.
Docs list no iOS, Android, React Native, Flutter or .NET library².

AppSignal suits web teams on Ruby, Elixir, Node.js, Python or PHP who want error tracking and performance in one plan with unlimited users^1,2. Source maps, breadcrumbs, deploy markers and alerts to Slack, Teams, PagerDuty and email are documented^1,3,7,8,9. The catch: pricing counts requests, not error events, there is no mobile or .NET library, and SAML sign-in is a business feature^1,2.

Best for: Ruby, Elixir, Node.js and Python teams that want errors and performance in one tool.

Where the points come from

SDK coverage10 of 20

Debugging13 of 17

Alerts and workflow7 of 10

Hosting and security14 of 25

Price and limits11 of 28

SDK coverage 10 of 20 points

Rule	What is published	Points
Web and server SDKs	JavaScript, Python, Java, PHP, RubyDocs list Ruby, Python, PHP and JavaScript packages; Java works through OpenTelemetry. No .NET library listed^2,4,5,6.	10 / 12
Mobile SDKs	NoneDocs list no iOS, Android, React Native or Flutter library².	0 / 8

Debugging 13 of 17 points

Rule	What is published	Points
Source maps	YesThe JavaScript docs describe sourcemaps that turn minified backtraces into original source³.	6 / 6
Mobile symbol files	Not publishedNot published on the vendor's docs; no mobile library is listed².	0 / 4
Release tracking	YesA revision setting creates deploy markers and shows in which deploys an incident occurred⁸.	4 / 4
Event trail before the error	YesJavaScript docs describe a time-ordered list of events sent with each caught error⁷.	3 / 3

Alerts and workflow 7 of 10 points

Rule	What is published	Points
Alert channels	Email, Slack, Microsoft Teams, PagerDutyPricing page lists alerts to Slack and email; docs list Microsoft Teams and PagerDuty notifiers^1,9.	4 / 4
Issue tracker integration	YesDocs list GitHub, GitLab and Jira integrations that create issues for incidents⁹.	3 / 3
Spike and quota controls	Not publishedNot published on the vendor's limiting page, which describes only ignoring actions or namespaces¹⁰.	0 / 3

Hosting and security 14 of 25 points

Rule	What is published	Points
Self-hosting	Not publishedNot published on the vendor's pricing page or docs index^1,9.	0 / 6
Open source	Not publishedSecurity page says the Ruby, Elixir and Node.js packages are public and the agent is closed source¹¹.	0 / 5
SOC 2 Type II or ISO 27001	YesSecurity page says 'We're ISO 27001 certified'; pricing page shows an ISO 27001 'certified' badge^1,12.	6 / 6
Single sign-on (SAML or OIDC)	YesPricing page lists Enterprise SAML SSO as a business feature¹.	5 / 5
EU data region	YesFAQ says data is kept in certified facilities in the Netherlands. US hosting is listed as coming soon¹.	3 / 3

Price and limits 11 of 28 points

Rule	What is published	Points
Free plan	YesFree plan with 30,000 requests a month and 5-day retention; error tracking is part of application monitoring¹.	5 / 5
Events on the free plan	Not publishedThe free plan is measured in 30,000 requests a month, not error events¹.	0 / 5
Cheapest paid plan	$20.41/moPaid plan, €219 billed yearly, which the page shows as €18.25 a month¹. Converted at €1 = $1.1186¹³.	4 / 8
Events on the cheapest paid plan	Not publishedThe paid plan includes 250,000 requests a month, not error events¹.	0 / 5
Error history on the cheapest paid plan	30FAQ says exception stack traces are available for at least 30 days¹.	2 / 5

The rule behind each line: how we score error monitoring tools.

Plans and prices

As the vendor lists them, before tax. Prices are in US dollars unless the plan shows euros; the points use US dollars, with euros converted at the ECB rate.

Plan	Price as listed	Per month	Notes
FreeUnlimited users	Free¹	$0	30,000 requests and 1 GB of logs a month; 5-day retention
PaidUnlimited users	€219/year¹	$20.41	€18.25 a month billed yearly; 250,000 requests and 1 GB of logs a month

Prices are shown in euros and converted at the ECB rate. The page has a yearly and monthly toggle; the yearly price is used here¹.

Strengths

Unlimited users, apps and teams on every plan¹.
SAML SSO and an ISO 27001 mention are on the pricing page¹.
Source maps, breadcrumbs and deploy markers are documented for JavaScript^3,7,8.
Alerts go to Slack, Microsoft Teams, PagerDuty and email; errors can open Jira, GitHub or GitLab issues^1,9.
The paid plan does not charge for overages¹.

Limits

No iOS, Android, React Native, Flutter or .NET library appears in the docs^2,9.
Plans count requests, so the vendor gives no error-event quota¹.
Java is supported through OpenTelemetry, which AppSignal calls relatively new⁴.
Retention is 5 days on the free plan, and 30 days for exception traces on the paid plan¹.
Prices are shown in euros¹.

Other error monitoring tools

1
SentrySmall teams that want wide SDK coverage and the option to self-host
88/100
$26/mocheapest paid plan
2
BugSnagTeams with web and mobile apps that want readable crash reports and an on-premise option
86/100
$20/mocheapest paid plan
3
HoneybadgerSmall web teams that want flat pricing and many language libraries
78/100
$23.83/mocheapest paid plan
4
RollbarSmall web teams that want cheap paid tiers and deploy tracking
77/100
$7.50/mocheapest paid plan

All 12 error monitoring tools

Sources

AppSignal pricing, AppSignal. Accessed 9 Oct 2026.
AppSignal documentation, AppSignal. Accessed 9 Oct 2026.
Sourcemaps, AppSignal. Accessed 9 Oct 2026.
AppSignal for Java, AppSignal. Accessed 9 Oct 2026.
AppSignal for PHP, AppSignal. Accessed 9 Oct 2026.
AppSignal for Python, AppSignal. Accessed 9 Oct 2026.
Breadcrumbs (JavaScript), AppSignal. Accessed 9 Oct 2026.
Deploy markers, AppSignal. Accessed 9 Oct 2026.
AppSignal documentation index, AppSignal. Accessed 9 Oct 2026.
Limiting requests, AppSignal. Accessed 9 Oct 2026.
Security overview, AppSignal. Accessed 9 Oct 2026.
AppSignal security, AppSignal. Accessed 9 Oct 2026.
Euro foreign exchange reference rates: US dollar, European Central Bank. Accessed 8 Oct 2026.

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