Most app store descriptions are either keyword-stuffed or too vague to convert. Here's how to write an App Store and Google Play description that does both — with copy examples.
In the Apple App Store, keywords in your description do not affect search ranking but can influence conversion rates. In contrast, Google Play does factor in keywords from the description for ranking, making strategic keyword placement crucial for visibility.
Your app store description has two audiences: the algorithm and the human.
Most app developers optimize for one and ignore the other. They either stuff the description with keywords (the algorithm likes it; humans stop reading) or write a beautifully compelling narrative (humans like it; it never gets found).
The goal is to do both. And with the right structure, it's not as hard as it sounds.
Not ranking
Writing the copy
Ranking + converting
In the Apple App Store, the first 255 characters of your description are visible before the "more" tap. This is effectively your conversion copy — most users never tap "more." Keywords in your description don't directly affect search ranking (Apple uses a separate keyword field). But they affect conversion: the right words make the right person tap "Get."
In Google Play, keywords in your description do affect search ranking. Google's algorithm indexes your full description and uses it to determine what queries your app should appear for. This makes keyword placement more strategically important for Android.
In both stores, the order is: Icon → Name → Screenshots → Rating → Description. By the time someone reaches your description, they've already made a tentative decision — your description's job is to confirm it and remove doubt, not to create the interest from scratch.
This is the equivalent of your App Store's visible first line — it appears in search results before the full listing. Treat it exactly like a tagline:
Examples:
"Generate app marketing copy from your URL in 60 seconds"
"AI marketing kit for founders: ads, copy, social posts"
"Turn your app URL into launch-ready marketing content"
StartKitz generates App Store and Google Play descriptions from your app URL — keyword-aware and conversion-optimized, with multiple variants to test.
Generate your descriptions →Part 1: The Hook (first 255 characters for iOS / first 80–160 words for Google Play)
This is your most important real estate. It should:
Example opening:
"Launching your app shouldn't require a marketing degree. Startkitz generates your landing page copy, ad creatives, social posts, and video scripts — from your URL, in under 60 seconds.
No briefs. No copywriters. No blank page."
Part 2: The Features-as-Benefits Section
After the hook, you have more room to expand. Use line breaks liberally. Mobile readers scan; they don't read paragraphs.
Example:
Generate everything for launch — in one place
✓ Landing page headlines and hero copy
✓ Google Search ad groups + Meta (Facebook/Instagram) ad creatives
✓ LinkedIn and Twitter/X post hooks
✓ Video script outlines for demos and promos
✓ Email subject lines and welcome sequences
✓ Product Hunt taglines and descriptions
No account setup. No onboarding calls. No brief.
Paste your app URL. Startkitz reads it and writes your marketing kit.
Part 3: Social Proof and Trust
Toward the bottom of the description, include one or two proof elements — user count, a specific testimonial quote, or a notable outcome. Then close with a direct, low-friction CTA:
"Try Startkitz free — generate your first marketing kit in under a minute."
For Google Play, keywords need to appear in the description — but naturally, not stuffed.
How to find the right keywords:
The first 167 words of your Google Play description are weighted most heavily. Include your 3–4 primary keywords there, then use secondary keywords naturally throughout.
Never repeat a keyword more than 2–3 times in the full description. Stuffing is detected algorithmically and hurts ranking.
Starting with "Welcome to [App Name]!" — Nobody cares. The first line should be about them, not a greeting.
Listing features before outcomes — "Advanced AI engine with 10+ output formats" means nothing to someone deciding whether to download. "Everything you need to launch your app's marketing — in one tap" gets downloaded.
One-paragraph walls of text — Mobile users will not read a paragraph. Break everything up. Short sentences. Line breaks. Checkmarks for feature lists.
No social proof anywhere — The description is your last chance to remove doubt before the download decision. A single specific testimonial or user count dramatically increases conversions.
| Element | Apple App Store | Google Play |
|---|---|---|
| Keyword indexing | Separate keyword field (not description) | Description indexed for search |
| Visible before tap | First 255 characters | Short description (80 chars) |
| Best practice | Conversion-first for visible text | Keywords early + conversion copy |
For iOS, your copywriting energy goes into the first 255 characters and your screenshot captions. For Google Play, it goes into natural keyword placement in the first 167 words and your conversion copy — you have to do both simultaneously.
Frequently Asked Questions
Do keywords in my App Store description affect search ranking?
It depends on the store. In the Apple App Store, keywords in your description do NOT directly affect search ranking — Apple uses a separate keyword field for that. But they affect conversion: the right words make the right person tap 'Get.' In Google Play, keywords in your description DO affect search ranking, so keyword placement is strategically important.
How long should my App Store description be?
In the Apple App Store, only the first 255 characters are visible before the 'more' tap — this is your conversion copy and should be treated like a hero section. For Google Play, the first 167 words are weighted most heavily for ranking. In both cases, keep your opening tight, outcome-focused, and jargon-free.
What should I put in my Google Play short description?
The Google Play short description (80 characters) appears in search results before the full listing — treat it exactly like a tagline. Name the outcome, not the feature, include your primary keyword naturally, and make it feel worth tapping into. Example: 'Generate app marketing copy from your URL in 60 seconds'.
What's the biggest mistake founders make with app store descriptions?
Starting with 'Welcome to [App Name]!' is the most common mistake — the first line should be about the user's outcome, not a greeting. Second is listing features before outcomes. Third is writing paragraph walls that mobile users won't read. Break everything into scannable lines; use checkmarks for feature lists; keep sentences short.
Paste your app URL and StartKitz generates your Growth Report, First Users Plan, social posts, ad creatives, and launch copy — all at once.
Generate free preview →