What is the best alternative to Air horn Pro on iPhone?

Air Horn Prank & Fart Sounds, S tier, #1 in air horn sound.

Is there a free alternative to Air horn Pro?

Yes: Air Horn Prank & Fart Sounds (S tier, #1) is free to download, with in-app purchases.

Yes. 3 apps rank above it in air horn sound: Air Horn Prank & Fart Sounds (#1), Horns and Sirens (#2), Air Horn Multi - fun sounds (#3).

Air horn Pro is C tier, #4 of the 6 tiered apps in air horn sound. Here is everything that competes with it on iPhone, in tier order.

1
Air Horn Prank & Fart SoundsShigher tier
Free + IAP · ★ 4.6 · 23,532 ratings · score 93
Plays a library of 80+ prank sound effects, such as air horns, sirens and farts, with tap or long-press playback.
2
Horns and SirensAhigher tier
Free download · ★ 4.5 · 11,249 ratings · score 89
Plays built-in horn and siren sounds such as police sirens, air horns and car alarms, with random and repeat options.
3
Air Horn Multi - fun soundsBhigher tier
Free download · ★ 4.2 · 7,804 ratings · score 80
A free sound app that plays air horn and other alarm, siren and horn sounds from the phone when a sound is selected.
4
Air Horn Sound - Pocket HornC
Free · ★ 4.3 · 104 ratings · score 68
Plays 20 air horn sound effects with customizable loop counts and adjustable volume, for signaling or pranks.
6
Loud Pocket HornsD
Free · ★ 4.2 · 116 ratings · score 58
Plays loud air horn, siren, and other sound effects by tapping buttons on a set of sound boards.

What is the best alternative to Air horn Pro on iPhone?: Air Horn Prank & Fart Sounds, S tier, #1 in air horn sound.
Is there a free alternative to Air horn Pro?: Yes: Air Horn Prank & Fart Sounds (S tier, #1) is free to download, with in-app purchases.
Does anything rank above Air horn Pro?: Yes. 3 apps rank above it in air horn sound: Air Horn Prank & Fart Sounds (#1), Horns and Sirens (#2), Air Horn Multi - fun sounds (#3).