Push an App's Unique Selling Points by Optimizing its App Store Presence


Wetter-Alarm is a weather app that warns about storms in Switzerland and Liechtenstein and provides current weather forecasts including high-resolution panorama images from webcams. The app is a free service from the cantonal building insurance  companies and is available for iOS  and Android.

To achieve their goals, we focused on utilizing App Store Optimization (ASO) to connect the app with the relevant audience and push the app’s unique selling points, as quality ASO can considerably boost installs, making it essential to app marketers. Furthermore, these are organic installs, which often prove to be an app’s most valuable users.

The Objective

  • Ranking higher on the App Store and Playstore
  • Improving reviews and ratings in both stores
  • Getting featured on the App Store
  • Increasing user base

The Solution

We improved the ASO with the following written and visual assets:


We analyzed and optimized existing keywords in the metadata (title, subtitle, keywords-field and long description), then the same was done for their top competitors. Additionally, we searched for more keywords in the reviews (own app + competitors), and the following functions of an ASO tool were used:

  • Auto-suggest (to find more long-tail keywords, various keywords were entered)
  • Top Search Terms (shows the most important keywords for the selected app > own & competitor)
  • Ranked Keywords (shows the keywords the selected app is ranking for > own & competitor)

In addition, we looked at the largest Swiss weather services and their respective localizations, then screened them for further keywords.
In the end, the list was then cleared of weak/irrelevant keywords (low SV, wrong search intent & relevance). Lastly, we updated the visuals, such as app screenshots and the preview video in both stores, highlighting the most important and desired features.

iOS Screenshots

Android Screenshots

The Results

During our short collaboration, we managed to successfully achieve our initial goals for the app as most of our suggested keywords rose in ranking. In the first half of 2023, we continued to improve the ASO performance and associated keyword rankings in both stores, across all language versions. App power, category rankings, downloads estimates and keyword rankings continued to improve.


In the upcoming quarter, a small ASO update should be carried out on the texts/metadata. In general, important keywords with good rankings should be retained or increased in the keyword density, while those with a significant downturn should either be replaced with others or tested elsewhere in the metadata. In addition, the soon available international weather data will open up new possibilities.

Here, keywords such as “Internationales Wetter”, “Wetter Italien”, etc. will become relevant. The app should therefore be localized in further countries and the gained space used for new keywords. It will also have to be checked how the new ASO videos affect the conversion rates and thus the overall performance.

Performance in Numbers

With just a few iterations, we optimized the video in such a significant way that it yielded good results. All of these creative optimizations lead to the following results:

App Power

73 to 83 (+10)

Category Rank

8 to 6 (+2)

Downloads Estimates

+ 8.1%


  • Testing different creatives in different Ad groups using
    Apple Search Ads (ASA)
  • In store A/B tests that display different variations to a split
    audience in Google Play 
  • Apple Search Ads (ASA) campaign optimization
  • Custom product pages to A/B test messaging and visuals
    on up to 35 different pages
  • Optimize in-app events


App Store Optimization


Switzerland & Liechtenstein



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