Backend keywords on iOS are hidden search terms you add in App Store Connect that help users find your app without appearing in visible text. You get 100 characters to include relevant keywords that Apple’s algorithm uses for search indexing. These invisible keywords work alongside your app title and description to improve discoverability and rankings in the App Store.
What exactly are backend keywords on iOS?
Backend keywords are invisible search terms stored in your App Store Connect dashboard that help Apple’s algorithm understand what your app does. Unlike your app title or description, users never see these keywords, but they play an important role in app discoverability.
You’ll find the backend keywords field in App Store Connect under your app’s metadata section. Apple gives you exactly 100 characters to work with, including spaces and commas. This character limit is strict—you can’t exceed it even by one character.
Think of backend keywords as your secret weapon for App Store optimization. While your visible text needs to appeal to both users and search algorithms, backend keywords focus purely on search functionality. You can include terms that might sound awkward in your description but are exactly what users type when searching.
The hidden nature of these keywords gives you flexibility to target specific search terms without compromising your app’s marketing message. You can include competitor names, alternative spellings, or technical terms that users might search for but that wouldn’t fit naturally in your public-facing content.
How do backend keywords actually work in the App Store?
Apple’s search algorithm crawls your backend keywords and indexes them alongside your visible App Store text to determine when your app appears in search results. The algorithm considers keyword relevance, your app’s overall performance, and user engagement when ranking search results.
When someone searches the App Store, Apple matches their query against all indexed text from your app listing. Your backend keywords expand this matching potential beyond what’s visible to users. If someone searches for a term that’s only in your backend keywords, your app can still appear in results.
The relationship between backend keywords and rankings isn’t direct—simply adding a keyword doesn’t guarantee high rankings. Apple’s algorithm weighs multiple factors, including download velocity, ratings, user engagement, and how well your keywords match actual app functionality.
Keyword performance depends on relevance. Apps that use backend keywords matching their actual features and user behavior tend to perform better than those stuffing unrelated popular terms. Apple’s algorithm has become sophisticated at detecting and penalizing irrelevant keyword usage.
What’s the difference between backend keywords and other iOS app keywords?
Backend keywords are invisible to users and have a 100-character limit, while app title keywords appear prominently and are limited to 30 characters. Your subtitle gets 30 characters and appears under your app name, whereas description keywords are visible in your full app description with no strict character limit.
Your app title carries the most weight for search rankings, followed by your subtitle. Backend keywords and description keywords have less individual impact but work together to support your overall keyword strategy.
Visibility creates different strategic opportunities. Your title and subtitle must appeal to users while incorporating keywords, balancing marketing appeal with search optimization. Backend keywords focus purely on search functionality without user-facing constraints.
Character limits force different approaches. Your title’s 30 characters demand careful keyword selection, while backend keywords’ 100 characters allow broader coverage. Description keywords offer unlimited space but carry less ranking weight.
Strategic usage varies by keyword type. Use your most important keywords in titles and subtitles, support them with related terms in backend keywords, and provide context through description keywords. This layered approach maximizes your app’s search visibility across different query types.
How do you choose the right backend keywords for your iOS app?
Start with keyword research using App Store search suggestions, competitor analysis, and an understanding of how your target users actually search. Focus on relevant terms that describe your app’s core functions, benefits, and category while avoiding keywords already used in your title or subtitle.
Analyze your top competitors’ visible keywords and consider what additional terms they might be targeting in their backend keywords. Look for gaps in keyword coverage where your app could capture search traffic they’re missing.
Prioritize keywords based on search volume and relevance to your app. High-volume generic terms are competitive, while specific long-tail keywords often convert better. Balance popular keywords with niche terms that precisely match your app’s unique features.
Consider user intent behind different keywords. Someone searching “budget tracker” has different needs than someone searching “expense management.” Choose keywords that align with what your app actually delivers to improve conversion rates.
Avoid keyword repetition across your metadata. Don’t waste backend keyword characters on terms already in your title or subtitle. Use the space for additional relevant keywords that expand your search coverage without redundancy.
What common mistakes should you avoid with iOS backend keywords?
The biggest mistake is repeating keywords that already appear in your title, subtitle, or description. This wastes valuable character space without providing additional search benefit. Apple’s algorithm already indexes those visible keywords.
Avoid using irrelevant popular keywords in the hope of capturing extra traffic. Including terms like “game” when you’ve built a productivity app might temporarily increase impressions but will hurt conversion rates and long-term rankings.
Don’t include trademarked terms or competitor names unless they’re genuinely relevant to your app’s function. This can lead to legal issues and app rejection. Similarly, avoid using keywords in languages that don’t match your app’s target market.
Character limit mismanagement is common. Some developers use spaces inefficiently or include unnecessary punctuation. Others try to exceed the 100-character limit, which simply truncates their keyword list.
Keyword stuffing hurts more than it helps. Cramming unrelated terms or using comma-separated lists of barely relevant keywords signals poor quality to Apple’s algorithm. Focus on fewer, highly relevant keywords rather than maximum quantity.
How do you measure if your backend keywords are working?
Track your app’s search rankings for specific keywords using App Store optimization tools or manual searches. Monitor changes in organic download numbers and search traffic after updating your backend keywords. Look for improvements in search impression data from App Store Connect Analytics.
App Store Connect provides search term data showing which keywords drive traffic to your app. Compare this data before and after backend keyword changes to measure impact. Pay attention to impression-to-download conversion rates for different search terms.
Monitor your app’s visibility for target keywords over time. Rankings fluctuate, but consistent backend keyword optimization should show gradual improvements in search positions for relevant terms. Track both broad and specific keyword performance.
Consider running A/B tests with different backend keyword sets if you have multiple app versions or can coordinate timing with updates. This helps isolate the impact of specific keyword changes from other optimization efforts.
Professional App Store Optimization requires ongoing measurement and refinement. If you’re managing multiple apps or want comprehensive keyword strategy development, working with specialists who understand the full scope of App Store Optimization can provide the expertise and tools needed to maximize your app’s search visibility and organic growth potential.
Frequently Asked Questions
How often should I update my backend keywords?
Update your backend keywords every 2-3 months or whenever you release a major app update. Monitor your keyword performance regularly and make changes if you notice declining search rankings or discover new relevant keywords through competitor analysis. Avoid making frequent changes as it takes time for Apple's algorithm to index and rank new keywords effectively.
Can I use the same backend keywords for different app store regions?
No, you should localize your backend keywords for each region where your app is available. Different markets use different search terms, languages, and cultural references. Research local keyword preferences and competitor strategies in each target market to maximize your app's discoverability across all regions.
What happens if I accidentally exceed the 100-character limit?
App Store Connect will automatically truncate your backend keywords at exactly 100 characters, potentially cutting off important keywords mid-word. Always double-check your character count before saving. If you're close to the limit, prioritize your most important keywords and remove less critical terms to stay within the constraint.
Should I include plural and singular versions of the same keyword?
Generally no, as Apple's algorithm is sophisticated enough to match both singular and plural forms of most keywords. Use the character space for additional unique keywords instead. However, if there's a significant difference in search behavior for certain terms in your niche, consider testing both versions.
How do I handle backend keywords when my app serves multiple functions?
Focus on your app's primary function first, then include keywords for secondary features. Prioritize terms that represent your core value proposition and have the highest search volume. If your app truly serves distinct user groups, consider which function drives more downloads and weight your keywords accordingly.
Can using competitor names in backend keywords get my app rejected?
Using trademarked competitor names can lead to app rejection or legal issues unless there's a legitimate functional relationship. Instead, focus on descriptive terms that represent the same app category or functionality. For example, use 'photo editor' rather than specific competitor names in the photo editing space.
What's the best way to separate keywords in the backend keywords field?
Use commas to separate distinct keywords, but don't add spaces after commas as this wastes characters. For multi-word phrases, use spaces normally. For example: 'budget tracker,expense manager,financial planning' maximizes your character usage while maintaining clear keyword separation.
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