Harper
writewithharper.com
About
Harper is an open-source grammar and spell checker that operates entirely on your device, ensuring that no data leaves your machine. It supports multiple English variants, including US, UK, Canadian, Australian, and Indian English.
PWA Quality
Mobile optimization
80
Install experience
65
Offline support
0
User experience
100
Overall score
61
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App Info
- CategoryUtilities
- Developerwritewithharper.com
- AddedJune 28, 2026
- PWA SupportNot Supported
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