# Sideline
> Sideline provides a reliable second phone number through an app, allowing users to keep their personal number private and protected. It is designed to enhance privacy, enable confident communication, and help users avoid spam and scams.
- URL: https://optimly.ai/brand/sideline
- Logo: https://logo.clearbit.com/https://sideline.com
- Slug: sideline
- BAI Score: 52/100
- Archetype: Challenger
- Category: Communication
- Last Analyzed: July 19, 2026
## Buyer Intent Signals
Problems: Separate Physical Phone/SIM: Purchasing and managing a second physical phone or a second SIM card for a dedicated second number, requiring additional hardware and potentially another service plan. | Use Primary Number Exclusively: Continuing to use only one personal phone number for all communications, risking privacy and increased spam.
Solutions: sideline app | second phone number for privacy | avoid spam calls app | Traditional VoIP Services: Using pure VoIP services that provide virtual numbers, which might be less reliable for call quality without a strong internet connection.