Side by side
Instant Grammar vs tinySpell
Both stand on grammar checkers. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Free plan Windows
Instant Grammar combines cross-application checking with automatic corrections and open-source availability. It is most suitable for Windows users comfortable supplying an OpenAI key and paying usage costs separately.
Visit Instant Grammar Free plan Windows
tinySpell adds spelling checks to Windows applications, with clipboard support and configurable corrections. The free tier covers core checking, while tinySpell+ adds dictionaries, automation, language services, and portability for a listed monthly price.
Visit tinySpellThe facts
| Instant Grammar | tinySpell | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | Not published | Not published |
| Runs on | Windows | Windows |
| Lowest paid plan | Free or on request | tinySpell+: $10, paid once |
| Plans published | 2 | 2 |
| Maker | Not published | Not published |
| Website | instant-grammar.com | tinyspell.com |
| On grammar checkers | #78 of 88 | #74 of 88 |
Instant Grammar: what it does well
- Free Windows download with no subscription
- Grammar, spelling, and style suggestions
- Works across Word, browsers, and email clients
- Open-source code with GitHub repository
- API key stored locally
What to know first
- Requires Windows 10 or later
- OpenAI usage is billed separately
- Text is sent to OpenAI
- No native macOS or mobile platform listed
tinySpell: what it does well
- Monitors typing for misspelled words
- Checks copied clipboard text
- Free version controls enabled applications
- Paid tier supports Hunspell dictionaries
- Portable versions require no installation
What to know first
- Available only on Windows
- tinySpell+ is listed at $10 a month
- Portable tinySpell+ installations generally need separate licenses
- No installation-free limitation applies to portable versions
Alternatives to Instant Grammar Alternatives to tinySpell The whole list