Crazy Sounds & Voice Changer

What it does

Crazy Sounds & Voice Changer is a mobile entertainment toolkit designed for pranks and humor. The app is built around three core features: a comprehensive soundboard with various effects like hair clippers and ghost sounds, a real-time voice changer that can modify the user's voice to sound like different characters, and a collection of sticker packs for use in iMessage.

Where it shines

The app's strength lies in the breadth of its content. The soundboard is extensive, organized into clear categories like "Featured" and "Hair Clipper" for easy browsing (01:09). The voice changer feature (03:47) offers a wide array of celebrity and character avatars, giving users plenty of options for creative audio clips. Finally, its integration with iMessage through sticker packs (05:35) extends the app's utility beyond real-time pranks into text-based humor.

UX highlights

Clear Feature Separation: The app uses a simple three-tab bottom navigation to cleanly separate its main functions (Soundboard, Voice Changer, Stickers), preventing user confusion.
Grid-Based Discovery: Content like sounds and voice avatars are presented in a simple grid layout, which is highly scannable and familiar to users.
Interactive Feedback: The voice changer provides a live waveform animation (04:13) while processing, giving users clear feedback that the app is working.
Direct Control: Features within the soundboard, such as setting a timer or looping a sound (01:35), give users practical controls for executing pranks effectively.
Favorites System: Users can save their most-used sounds to a "My Favorite" section (06:44), allowing for quick access and personalization of the experience.

Monetization & growth

The app employs an aggressive monetization strategy. A paywall is presented immediately after permission prompts during onboarding (00:16), requiring a subscription to access any features. This paywall uses a 3-day free trial to lower the barrier to entry. Growth is likely driven by social sharing and App Store visibility, which is supported by an equally aggressive in-app rating prompt that appears during active use of a feature (01:56).

Who it’s for

The target audience appears to be younger users interested in social media, pranks, and creating humorous content. The simple interface and focus on immediately accessible, entertaining sounds make it suitable for casual users looking for a quick laugh or a tool to prank their friends in person or online.

Notes & opportunities

The initial user experience is high-friction, with two immediate system permission prompts followed by a hard paywall. This could deter users who prefer to explore an app before committing. During the recording, the voice changer feature failed with an error message (05:00), which suggests there may be reliability issues with this core function. The visual design, while functional, lacks a strong hierarchy, making it sometimes difficult to distinguish between different sections at a glance.