DTMF - Sound of Dialing Keypad
iOS app by NINTHBOAT INC.. Education · NINTHBOAT INC.
- Store rating
- 2.2 / 5
- Store rating count
- 10
- Download price
- Free to download
- In-app purchases
- Unknown
- Version
- 1.3
- Listing last refreshed
- 2026-09-13
View the original store listing
Store description excerpt
You know the beeps when you are dialing a number. But do you know the beeps are identical? You can learn what numbers the beeps refer to by using this app.
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