App Store Listing Optimization Checklist: 25 Points for 2026

TL;DR. An optimized App Store listing in 2026 means getting two layers right together. The metadata Apple indexes for search (30-char app name, 30-char subtitle, 100-char keyword field, in-app events, custom product pages) and the creative that converts the tap into an install (icon, the first three screenshots, app preview, ratings). Most checklists fix only one layer. This one covers all 25 points across both, with every exact limit, then the maintenance loop that keeps it working.

Last updated: 2026-08-01.

Disclosure. We make ScreenFast, an AI App Store screenshot generator. It honestly serves only 3 of the 25 points below (screenshots, icon, and the image half of localization), and we name them as such. Every spec is cited to Apple's documentation where it is an Apple rule, and community tactics are flagged as unofficial.

Why an App Store listing has two layers (and why most checklists only fix one)

Roughly 70% of App Store visitors find apps through search, and about 65% of downloads happen right after a search (Eltima 2025, via Udonis). That funnel has two distinct jobs. Metadata gets you found in search. Creative gets you installed once found. Optimize one without the other and you either rank for terms nobody converts on, or convert beautifully on traffic you never receive.

This checklist is organized in four layers: search metadata (points 1 to 9), conversion creative (10 to 18), advanced iOS surfaces (19 to 22), and trust plus localization (23 to 25).

App Store Optimization: the proven ASO framework for 2026 from App Masters is a good overview before the detail.

Layer 1: Metadata you optimize for search (Points 1-9)

The fields Apple indexes for ranking. Get the character limits and mechanics exactly right.

1. App Name (30 chars): your strongest relevance signal. Lead with the brand, then your primary keyword.
2. Subtitle (30 chars): treat it as a second keyword field, not a tagline. Pack distinct high-value terms.
3. Keyword field (100 chars): comma-separated, no spaces after commas, single words. It is not user-visible.
4. Keyword mechanics: use singular forms only (Apple matches singular and plural), drop stop words (the, and, for, with, a, an), and never repeat words already in your name or subtitle (no duplication credit).
5. No brand in the keyword field: do not waste characters on your own app name; it is already indexed from the title.
6. Ranking-weight order (community consensus, not official Apple doctrine): App Name > Subtitle > Keyword field > in-app purchase and event names.
7. Promotional Text (170 chars): editable without an app update, but it does not affect search ranking. Use it for announcements.
8. Description (4,000 chars): on iOS it is primarily a conversion surface, not indexed for ranking, so write it for the user and front-load the value. (On Google Play the description is indexed.)
9. Secondary-locale keyword trick (unofficial, can change): for the US storefront Apple indexes both the English (US) and Spanish (Mexico) keyword fields, effectively giving ~200 keyword characters. Flagged as a community tactic. The full keyword method is in ASO keyword research.

Layer 2: Creative that wins the install (Points 10-18)

10. Screenshots (up to 10 per device per localization): the single biggest conversion lever. 2026 sizes: iPhone 6.9-inch is 1290x2796, iPad 13-inch is 2064x2752. Flattened JPEG or PNG, RGB, no transparency.
11. First three screenshots: the first 1 to 2 render in search results, and most users never scroll past three. Put your strongest benefit on frame 1.
12. One idea per frame: five great screenshots beat ten mediocre ones (appdrift). Avoid the common mistakes.
13. Caption text is now indexed: since mid-2025 Apple indexes the text inside your screenshots for ranking, so captions are now a metadata surface, not only a creative one.
14. No staged mockups: Apple forbids screenshots of people holding phones. Show actual app UI.
15. App Icon (1024x1024 PNG, no alpha): must stay legible down to about 29x29 pt. Icon A/B tests have shown +22.8% to +32% install lift (seosherpa, Udonis).
16. App Preview video (up to 3, 15 to 30s, max 500MB): H.264 or ProRes 422 HQ, autoplays muted, resolution matches screenshots. Optional but useful for dynamic apps.
17. Poster frame: choose it deliberately; Apple defaults to a weak ~5-second frame.
18. Cohesion: keep icon, screenshots, and preview visually consistent so the listing reads as one story.

Disclosed ScreenFast fit, here only: our AI App Store screenshot generator produces 10 design variants from a URL or your own uploads, at the 1290x2796 master Apple auto-scales, for $9.99. It covers points 10, 12, and 15 (screenshots and icon), and nothing else on this list. See the AI App Store screenshot generator.

Layer 3: Advanced iOS surfaces most checklists skip (Points 19-22)

19. Custom Product Pages (up to 70 per app, doubled from 35 on Oct 29, 2025): each has a unique URL and can vary screenshots, promo text, and previews. Title and subtitle are inherited, not changeable per variant.
20. CPP keywords: since mid-2025 you can assign keywords to a CPP so it (not the default page) appears in organic search for those terms. Apple reports an average +2.5 percentage-point conversion lift from custom product pages, a 156% increase over the ~1.6% default-page rate.
21. In-App Events (up to 5 live at once): searchable, and they can target new keywords beyond your main metadata.
22. Product Page Optimization (PPO): one test at a time, up to 3 treatments, runs up to 90 days. This is how you validate every creative change; full method in the A/B testing guide.

Layer 4: Trust, ratings, and localization (Points 23-25)

23. Ratings (target 4.0+, ideally 4.4+): both a ranking and conversion factor. Apps below 4.0 see roughly a 50% conversion decline (SplitMetrics, AppRadar). Wire an in-app SKStoreReviewController prompt at a positive moment, and note that review velocity (fresh reviews) is an emphasized 2026 signal. Details in the rating-impact guide.
24. Localization: localized screenshots improve conversion roughly 5 to 15%, and full localization can drive a 10 to 25% organic install increase per market. Localize both halves: the text (name, subtitle, keywords) and the images. The image workflow is in the localization guide.
25. Retention and velocity: in 2026 download velocity and day-1 retention weigh more than slow cumulative volume, and poor early retention gets rank-suppressed. The listing's job is to attract the right users, not the most.

Maintenance cadence: treat ASO as a loop, not a launch task

Optimization is not a one-time setup. Refresh metadata every 6 to 8 weeks, review your keyword field at least quarterly, keep the What's New notes current (never leave them default), and review your metrics monthly. Every creative change should go through PPO before it ships to 100% of traffic. The listing is a living asset, and the apps that win treat it that way. For benchmarks on what "good" looks like, see the conversion benchmarks.

How we tested

Character limits and field specs are unanimous across the top ASO references (appfigures, storeshots, appshots, Udonis, SplitMetrics) and match Apple's App Store Connect. Apple-attributed figures (the +2.5-point CPP lift, the 70-CPP cap as of Oct 2025) are cited to Apple via Adapty. Conversion-lift numbers (icon +22.8 to 32%, localization 5 to 25%) are vendor-reported and flagged as directional, and we excluded outlier headline claims like "720% / 12x." The ranking-weight order and the secondary-locale keyword trick are community consensus and unofficial, labeled as such. ScreenFast is our own product, and we name the exact 3 of 25 points it serves.

Frequently asked questions