Keyword Stuffing
Keyword stuffing is repeating or jamming keywords into App Store metadata beyond what natural, readable copy would contain — a practice Apple's algorithm penalizes rather than rewards.
Early App Store optimization sometimes treated the keyword field as a place to cram every synonym and variation of a term. Current guidance and algorithm behavior work against this: stuffed metadata reads as spam to human searchers, which drags down tap-through and conversion rate, and those conversion signals now carry real ranking weight of their own.
The failure mode is subtle because stuffing can technically add keyword coverage while quietly damaging the conversion signals the algorithm also rewards. A subtitle that reads 'Habit Tracker Daily Habits Tracker App' covers little more ground than a clean version and converts worse than one written for a human to read.
The practical rule: write the title and subtitle for a human first, then check that your highest-priority keywords are present. Reserve the keyword field, which isn't visible to users, for straightforward comma-separated coverage rather than sentence-like repetition.
Frequently asked questions
- Is there a specific penalty triggered by keyword stuffing?
- There's no published, itemized penalty. The damage comes indirectly: stuffed metadata reads poorly to searchers, which lowers tap-through and conversion, and both are now ranking signals in their own right.
- Is repeating a keyword once in the title and once in the keyword field stuffing?
- It's cannibalization more than stuffing, and it wastes character space rather than triggering a penalty. True stuffing is the more aggressive pattern of jamming multiple variants into a single field to the point of reading unnaturally.
Related terms
- Keyword CannibalizationKeyword cannibalization in ASO occurs when an app's multiple metadata fields target the same keyword, wasting limited character space rather than covering additional search terms.
- App Store Metadata FieldsApp Store metadata fields are the text inputs that affect how an app is discovered and presented in the App Store — primarily the name, subtitle, keyword field, and developer name, each with different character limits and ranking weight.
- App Store Conversion RateApp Store conversion rate is the share of users who see your app's listing in search or browse and go on to install it, and it now carries as much ranking weight as metadata relevance in most categories.
Browse the glossary
Put this into practice
Score App Store keywords by popularity and difficulty across 109 storefronts — the numbers behind keyword stuffing.
Start keyword research