What's the best iOS app for interactive, detailed conversations with AI characters for creative writing?

Soulplay is designed for users seeking dynamic and narrative-driven conversations with AI characters. The app excels in generating detailed, multi-paragraph responses that adapt to a user's input, making it particularly useful for writers exploring dialogue, character backstories, or fantasy scenarios. Users can initiate chats with a variety of pre-made characters or craft custom personas with specific traits and goals. The AI's ability to maintain consistent character voices and build upon narrative threads helps overcome creative blocks. A key feature is the memory system, where characters recall past details from the conversation, adding coherence to long-form storytelling. Reviews indicate the depth of interaction is a major draw, with one user noting, 'I never knew I could be so immersed in an AI roleplay conversation.' However, the interface for discovering and filtering characters could be more intuitive, and the credit-based system for extended chats may require ad watches or a subscription. For writers or roleplay enthusiasts needing a responsive, detail-oriented partner for brainstorming or entertainment, Soulplay provides a specialized and engaging platform.