App Showcase: Lumi Cleaner

What it does

Lumi Cleaner is a mobile utility designed to help users reclaim storage space on their phones. Its primary function is to intelligently scan the user's photo and video library to identify and remove unnecessary files. This includes duplicate photos, blurry images, screenshots, and similar video clips.

Where it shines

Lumi Cleaner stands out with its highly visual and tangible user experience. The onboarding (00:07) doesn't rely on text but instead uses slick animations to demonstrate exactly how the app frees up space, which immediately builds user confidence. Another strong point is the main dashboard (00:46), which breaks down the cleaning process into clear, manageable categories like "Similar Pic" and "Blur Pic," giving users a sense of control. The "Swipe Clean" feature (02:12) also cleverly reframes a tedious chore into a chronological review of memories, making it more engaging.

UX highlights

• Animated Value Props: The onboarding carousel (00:07-00:28) uses looping animations to demonstrate core features, which is more compelling than static images.
• Clear Categorization: The main screen (00:46) organizes cleaning tasks into distinct jobs (Similar, Blurry, Screenshots), reducing user anxiety about accidental deletion.
• Smart Suggestions: The app automatically flags the "Best" photo in a set of duplicates (00:56), simplifying the decision-making process for the user.
• Chronological Sorting: The "Swipe Clean" feature (02:12) allows users to tackle photos month-by-month, turning a massive task into manageable chunks.
• Tangible Feedback: After cleaning, the app provides a clear summary of the action taken and space saved (01:21), reinforcing the value delivered.
• Multiple Sorting Options: Within the cleaning interface, users can sort by "Newest" or "Oldest" (00:58), providing additional control over the process.

Monetization & growth

The app employs a free-trial model, presenting a paywall (00:28) after the initial feature demonstration but before the user can perform any actions. The offer is a 3-day free trial that converts to a $9.99/week subscription. The paywall screen itself is simple, highlighting key pro features and including a prominent toggle to show that the free trial is enabled by default. After a user successfully cleans files, the app uses a custom prompt (01:21) to ask for a rating, followed by the official App Store rating dialog (01:25).

Who it’s for

This app is for any smartphone user who frequently takes photos and videos and finds themselves running out of storage. It's particularly useful for individuals who have large, unorganized photo libraries and find the prospect of manually cleaning them overwhelming. The simple, guided interface makes it accessible even for less tech-savvy users who want a quick and safe way to free up space.

Notes & opportunities

The initial App Tracking Transparency prompt (00:00) is shown without any warm-up screen, which can be jarring and lead to lower opt-in rates. A simple screen explaining why tracking is requested could improve this. Additionally, while the main dashboard is clear, the navigation between different cleaning types (photos to videos) relies on returning to the home screen. A more persistent navigation element could streamline the experience for users wanting to perform multiple types of cleaning in one session.