[psychphysic]

I agree. Although this might be more about covering development costs than making OP money.

An important distinction so many entrepreneurs fail to make. Don't enter a saturated market without anything new on the table if you intend to make money.

The problem with this particular market is that musicians can mostly tune by ear. Most will have a dedicated tuner next to their instrument and worst of all these apps don't perform as well for a variety of reasons not least of all that the response of the device might be off.

[xwowsersx]

Musicians can tune by ear, but the vast majority of people who play guitar on a daily basis are novices or beginners and they all use tuners or tuner apps.

[ElijahLynn]

Even if tuning by ear, when you play with a band or especially are recording, it would be very silly to trust your ear alone because recording hours of takes in an expensive recording studio with many other people's time in a slightly out of tune key would be very disrespectful and wasteful.

Most musicians can tune "relatively" okay, but do not have the ability to tune "absolutely" (perfect pitch).

Here is an example of perfect/absolute pitch that very few musicians have. This is the skill one would need to be able to not use a tuner at all > https://www.youtube.com/watch?v=dw3-k9 (Jimmy Kimmel Puts Charlie Puth’s Perfect Pitch to the Test).

[xwowsersx]

For sure. We always tuned by plugging into tuners when I played in a band. You might get it to closer than completely out of tune by ear, but when you're in close quarters and there's people talking or playing their music, you just plug in and get to the green light.

[rav]

Even if you can tune by ear, it can be faster to use a tuner, especially in a noisy environment. Also, if you listen to harmonics when tuning a guitar by ear, you'll get something like just intonation instead of the equal temperament tuning that you would get with typical tuner apps.