Which to use
“App” is a name and “atop” is a preposition - they look or sound alike but fill different roles in a sentence.
- #1,445
- “App” frequency rank
- #12,368
- “atop” frequency rank
- 13813
- confusion score
Side-by-Side Comparison
| Feature | App | atop |
|---|---|---|
| Definition | A surname from German. | On the top of. |
Letter map: App vs atop
Shared letters muted; letters that set App and atop apart highlighted. Shared run: 2.
Grammar separator: App vs atop
Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: App is aname and atopapreposition. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 13813, derived from the frequency rank of both members and their visual similarity.
App is recorded at frequency rank #1,445, classified as aname. atop is at rank #12,368, tagged as aprep, pronounced /əˈtɒp/.
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 13813, this pair ranks #473,689 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of App vs atop
Shared letters: ap. Private to "App": -. Private to "atop": ot.
"App" · 3 letters · shape VCC · "atop" · 4 letters · shape VCVC
Known mistypes of this pair
- atop ← aotp · atopp · atpo · attop · taop
Frequently Asked Questions
Is swapping "App" for "atop" ever safe?
In ordinary English text, does "App" or "atop" show up more?
Useful next steps
Done with this confusable. These links stay specific to "App" and "atop".
- Full dictionary entry for "App" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "atop" - compare definitions side by side with the headword page. Word entry
- This pair ranks #473,689 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "App" and "atop" also get mixed up with nearby pairs, the highest-scored neighbour is "atop vs ATR". Nearby pair
- Recorded mistypes exist for at least one side of this pair, useful when a spell-checker or OCR lands on the wrong form. See mistypes
Confusion rank #473,689 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.