I think acquirers will typically be more interested in financial figures rather than the size of the codebase.
There's flippa.com and the likes, you could start your research there.
There's flippa.com and the likes, you could start your research there.
For an app the quality/maintainable/upgradeability would certainly come into play. As well as things such as growth trends, competition, etc.
But if you can show a market dominant app with a happy user base and steady income that is relatively easy to maintain you can generally expect 3 to 7 times your annualized seller discretionary earnings (A.k.a., your profits minus the cost of replacing your time with a paid programmer and putting back any write-offs that you put on the business).