NumKey: Numeric Only Keyboard

Modern smartphone keyboards are designed for general use, often making numeric input slow and inefficient. Users working with frequent number entry—such as in finance, accounting, or data entry—face unnecessary friction switching between keyboard modes.

The challenge was to create a fast, minimal, and reliable numeric-only keyboard that eliminates distractions while maintaining compatibility across Android devices.

We developed NumKey, a dedicated numeric keyboard app focused purely on speed and usability. The interface was designed with a clean layout, large touch targets, and zero unnecessary features.

Key priorities included:

• Instant keyboard loading with minimal latency

• Optimized layout for one-handed use

• Seamless integration with all input fields

• Lightweight performance with minimal battery usage

• Numeric-only keyboard for fast input

• Clean and distraction-free UI

• Large, easy-to-tap buttons

• Lightweight and fast performance

• Works across all apps requiring number input

• Minimal permissions for enhanced privacy

• Custom tap sounds

• A lot of themes to choose from

NumKey significantly improved numeric input efficiency for users. Early feedback highlighted faster typing speed and reduced frustration compared to traditional keyboards.

Key outcomes:

• Improved user productivity in numeric tasks

• Positive user feedback on simplicity and usability

• High retention due to focused functionality

• Stable performance across a wide range of Android devices

This project reinforced the importance of simplicity in product design. By focusing on a single use case and executing it well, we delivered a highly effective solution.

We also learned:

• Minimal UI can outperform feature-heavy designs

• Performance optimization is critical for utility apps

• User trust increases with fewer permissions and transparency

https://play.google.com/store/apps/details?id=com.planXLabs.onlyDigitsKeyboard