DualProfile
Shows a different WhatsApp profile photo to each contact, or by time of day
DualProfile is a Chrome/Edge tool that runs on WhatsApp Web and either swaps your real profile photo automatically by day and time (work photo 9-6, personal the rest) or shows a different photo to each contact if they also install it. It doesn't store any chat data, and per-contact photos need both sides to have the extension, group chats aren't supported yet. The free tier covers unlimited contacts and time-based switching; a one-time upgrade adds photo history, export/import backup, and multi-device sync.

What holds up
- +Free forever for unlimited contacts and automatic day/time photo switching
- +One-time £9.99 (about $13) adds history, backup, and sync, no subscription
- +Runs on WhatsApp Web only, the site says no chat data is stored
- +Preview Mode shows exactly how you'd appear to any contact before they install anything
Mind the limits
- −Per-contact photos need the other person to install DualProfile too, no dice otherwise
- −Group chats aren't supported yet, customization stays one-on-one
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