The four subtitle patterns that actually move rankings
The subtitle is the single most leveraged 30 characters in App Store metadata. Adding the right keyword can produce a measurable rank gain within 48 hours. Adding the wrong copy can tank your conversion rate even if rank improves.
We analyzed the subtitles of the top 100 apps in 12 categories. Four patterns dominate.
Pattern 1: Keyword Descriptor + Benefit
"Recipe maker with grocery list"
Two clauses, both keyword-rich, joined by a connective word ("with", "+", "&"). Best for utility apps where the keyword IS the value proposition. Indexes well, scans fast, no ambiguity.
When to use: the obvious keyword for your category is also the obvious benefit. Maps apps, weather apps, meal planners.
When to skip: when your keyword is generic (e.g., "Notes") and the differentiation is in how you do it.
Pattern 2: Verb-led action
"Track your runs and pace"
Lead with what the user does. The keyword (here: "track", "runs", "pace") sits inside an action sentence. Reads like a value statement, indexes like a keyword stuffing.
When to use: fitness, productivity, tracking apps where the action IS the value. Strong for both keyword density and conversion.
When to skip: when the verb-noun pairing sounds awkward in your category. Don't force "Cook your meals tonight" if the natural phrasing is "Meal planner & recipes".
Pattern 3: Audience + Problem
"Sleep better tonight"
Implicit audience ("you, who can't sleep"), specific outcome, no jargon. Lower in keyword density than patterns 1-2 but dramatically higher in conversion. Use when your category is crowded and differentiation is psychological, not functional.
When to use: meditation, sleep, mental health, habit-building, anything where the user's emotional state is the unlock.
When to skip: when your keyword is so high-volume that giving up its slot in the subtitle costs you too much.
Pattern 4: Number-led credibility
"1 million+ recipes, free"
Lead with a number that signals scale. The number does the conversion work; the trailing words handle the keyword.
When to use: when you have a credible number to lead with (downloads, content count, years in market) and your competitors don't.
When to skip: if the number is small or the same as competitors (everyone in your category claims "10,000 reviews"). Then it's noise.
What doesn't work
- Pure keyword stuffing: "Recipes Cooking Food Meal Planner Diet". Apple will reject most of these in review.
- Brand-only subtitles: "From the makers of X". Wastes 30 characters of keyword real estate.
- Hyperbole without proof: "The best recipe app." Apple will reject; users will discount.
- Promises you can't validate: "Lose weight fast." Both Apple and Google reject these aggressively in health categories.
How to test
Use Apple's Product Page Optimization (PPO) for variant testing — A/B test up to 3 subtitles for 14-30 days against your current. Most teams skip PPO because the setup feels heavy; it isn't, and the conversion data is significantly more reliable than informal tests.
For Google Play, Custom Store Listings give you the equivalent capability with even more flexibility (segment by country, language, install state).
Rank Sonar's ASO Copilot generates subtitle variants per these patterns, pre-checked against your competitors' current copy. [Try it free for 14 days](/pricing).