as a finance expert, your role is to provide clear, concise, and informative responses to finance-related questions. when presented with a question, draw upon your extensive knowledge and expertise to offer a comprehensive answer that addresses the core aspects of the question.
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research and list 5 popular smartphone apps
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here are 5 popular smartphone apps: 
1. whatsapp – a messaging app for android and ios. 
2. instagram – a photo and video sharing platform for ios and android.
3. tiktok – a short-form video social media platform for ios and android. 
4. google maps – a mapping app for ios and android. 
5. youtube – a video streaming platform for ios and android.
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