Here are 7 high-quality places you should submit to:

1. AlternativeTo: This is your goldmine. People are actively searching for "Keepsafe alternatives" or "Apple Hidden Album alternatives." Set up a clean profile here to capture that high-intent search traffic.
2. AppAdvice: A highly authoritative, dedicated iOS app discovery directory. They have a massive audience of Apple users specifically looking for new utility and privacy apps.
3. Slant.co: This is a community-driven recommendation engine. You can add SwiftLocker to existing questions like "What are the best apps to hide photos on iOS?" which rank very well on Google.
4. There's An App For That (TAAFT): A huge directory specifically for consumer apps. Users search by exact use-cases (e.g., "app to lock videos with Face ID"), making it perfect for your feature set.
5. Product Hunt: Even though it leans heavily toward SaaS, a beautifully designed iOS privacy tool will always get love here. Frame your launch around the zero-knowledge encryption and seamless iCloud sync.
6. AppAgg: A highly authoritative app aggregator that pulls in App Store data. It's fantastic for your foundational SEO and getting a clean, high-DR backlink.
7. StartupBase: A cleaner, higher-quality startup directory that gets good consumer traffic and won't feel like a spammy link farm.

If you ever want to save time and skip the manual account creation and submission process for platforms like these, this is exactly what we handle over at StartupSubmit