Add mobile performance score section

[sergical]

DESCRIBE YOUR PR

Adds a "Performance Score" section to the Mobile Vitals documentation (/product/insights/mobile/mobile-vitals/) with a table detailing the thresholds for "Good", "Meh", and "Poor" average cold and warm app start times. This change addresses a user request to clarify how these mobile vital metrics are scored within Sentry, similar to the existing Web Vitals performance score documentation.

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PRE-MERGE CHECKLIST

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• Checked Vercel preview for correctness, including links
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LEGAL BOILERPLATE

Look, I get it. The entity doing business as "Sentry" was incorporated in the State of Delaware in 2015 as Functional Software, Inc. and is gonna need some rights from me in order to utilize my contributions in this here PR. So here's the deal: I retain all rights, title and interest in and to my contributions, and by keeping this boilerplate intact I confirm that Sentry can use, modify, copy, and redistribute my contributions, under Sentry's choice of terms.

EXTRA RESOURCES

• Sentry Docs contributor guide

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Project	Deployment	Preview	Comments	Updated (UTC)
sentry-docs	Ready	Preview	Comment	Sep 13, 2025 0:11am

1 Skipped Deployment

Project	Deployment	Preview	Comments	Updated (UTC)
develop-docs	Ignored			Sep 13, 2025 0:11am

[codecov]

Bundle Report

Changes will increase total bundle size by 493 bytes (0.0%) ⬆️. This is within the configured threshold ✅

Detailed changes

Bundle name	Size	Change
sentry-docs-client-array-push	9.91MB	-290 bytes (-0.0%) ⬇️
sentry-docs-server-cjs	12.63MB	783 bytes (0.01%) ⬆️

Affected Assets, Files, and Routes:

view changes for bundle: sentry-docs-client-array-push

Assets Changed:

Asset Name	Size Change	Total Size	Change (%)
static/chunks/pages/_app-*.js	-3 bytes	882.71kB	-0.0%
static/chunks/8321-*.js	-3 bytes	425.87kB	-0.0%
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static/media/32c80fb7588b7a2e-*.woff2 (New)	32.48kB	32.48kB	100.0% 🚀
static/media/a5d9f2ead0568494-*.woff2 (New)	21.08kB	21.08kB	100.0% 🚀
static/media/5b25d60b4670300e-*.woff2 (New)	19.29kB	19.29kB	100.0% 🚀
static/media/fc5b975a09123a00-*.woff2 (New)	9.75kB	9.75kB	100.0% 🚀
static/media/99e31c27a1524300-*.woff2 (New)	9.35kB	9.35kB	100.0% 🚀
static/XcMd7b2MRWoObRVCIUFUM/_buildManifest.js (New)	684 bytes	684 bytes	100.0% 🚀
static/XcMd7b2MRWoObRVCIUFUM/_ssgManifest.js (New)	77 bytes	77 bytes	100.0% 🚀
static/media/4fca85807f6c09f6-*.woff2 (Deleted)	-32.6kB	0 bytes	-100.0% 🗑️
static/media/d695df15e3ff125c-*.woff2 (Deleted)	-32.58kB	0 bytes	-100.0% 🗑️
static/media/acdf4f392b58827a-*.woff2 (Deleted)	-21.13kB	0 bytes	-100.0% 🗑️
static/media/501d9eeee6e2b0cc-*.woff2 (Deleted)	-19.41kB	0 bytes	-100.0% 🗑️
static/media/a72efd2c2476ebb2-*.woff2 (Deleted)	-9.7kB	0 bytes	-100.0% 🗑️
static/media/9d7436bc73437f75-*.woff2 (Deleted)	-9.36kB	0 bytes	-100.0% 🗑️
static/Hr-*.js (Deleted)	-684 bytes	0 bytes	-100.0% 🗑️
static/Hr-*.js (Deleted)	-77 bytes	0 bytes	-100.0% 🗑️

view changes for bundle: sentry-docs-server-cjs

Assets Changed:

Asset Name	Size Change	Total Size	Change (%)
1729.js	-3 bytes	1.78MB	-0.0%
../instrumentation.js	-3 bytes	1.1MB	-0.0%
9523.js	-3 bytes	1.08MB	-0.0%
../app/[[...path]]/page.js.nft.json	264 bytes	810.41kB	0.03%
../app/platform-redirect/page.js.nft.json	264 bytes	810.32kB	0.03%
../app/sitemap.xml/route.js.nft.json	264 bytes	807.79kB	0.03%

[sfanahata]

@sergical - looks good. Are those numbers represented within our product?

[sergical]

@sergical - looks good. Are those numbers represented within our product?

Yeah, the logic is here: https://github.com/getsentry/sentry/blob/master/static/app/views/insights/mobile/screens/utils.ts#L84-L138 we just didn't have anything similar to https://docs.sentry.io/product/insights/frontend/web-vitals/#performance-score for mobile