As of my last knowledge update in January 2022, there were several highly-rated logo maker apps available for both iOS and Android devices. However, the popularity and ratings of apps can change over time. To find the most current and highly-rated logo maker app, I recommend visiting your device’s app store (Apple App Store for iOS or Google Play Store for Android) and searching for “logo maker.” You can then read reviews, check the ratings, and explore the features to choose the one that suits your needs best.

Some well-known logo maker apps that were highly-rated at the time of my last update include:

1. **LogoMakr**: A user-friendly app for designing logos with various customization options.

2. **Hatchful by Shopify**: Shopify’s logo maker app that offers templates and customization tools.

3. **Canva**: Canva’s mobile app is a versatile design tool that includes logo-making features.

4. **Looka (formerly Logojoy)**: Looka uses AI to generate logo designs based on user input.

5. **Adobe Spark Post**: Adobe Spark offers a mobile app with logo-making features and access to a vast library of design assets.

6. **Logo Maker Plus**: An app that provides a variety of logo templates and editing tools for customization.

Please check the most recent reviews and ratings for these apps to ensure you choose the one that best suits your current needs and preferences.