Which to use
“iOS” is a name and “it's” is a contraction - they look or sound alike but fill different roles in a sentence.
- #5,888
- “iOS” frequency rank
- #55
- “it's” frequency rank
- 5943
- confusion score
Side-by-Side Comparison
| Feature | iOS | it's |
|---|---|---|
| Definition | A mobile operating system (OS) created and developed by Apple Inc. exclusively for its hardware. | Contraction of it + is. |
Where the spellings diverge
Shared letters are muted; the letters that actually set iOS and it's apart are highlighted. They share 2 letters in sequence, which is exactly why the eye skips the difference.
Spelling & Dictionary Insight
iOS and it's form a confusable pair in the English index, two distinct headwords that are easily confused because they look alike, sound alike, or both. They differ by 1 letter(s) in length - close enough that the eye skips over the difference, far enough that meaning fully diverges. Our composite confusion score for this pair is 5943, derived from the frequency rank of both members and their visual similarity.
iOS is recorded at frequency rank #5,888, classified as aname. it's is at rank #55, tagged as acontraction, pronounced /ɪts/.
Glosses for this pair are partially populated in our dataset, but the full side-by-side definitions above should still guide you to the right choice.
With a confusion score of 5943, this pair ranks #513,403 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.
Frequency comparison
Frequently Asked Questions
Can "iOS" and "it's" be used interchangeably?
Remembering iOS vs it's
The fastest way to pick the right one every time.
- Check the role first: if you need a name, it's “iOS”; for a contraction, it's “it's”.
- See each word in full, definition, IPA, etymology and its other confusables. Full “iOS” entry
- Browse more pairs most likely to be confused. Most confusable