When comparing Open Field Echo Sounder vs Birdie Pirdie(Trini Tap2Fly), the Slant community recommends Birdie Pirdie(Trini Tap2Fly) for most people. In the question“What are the best Android games without in-app purchases/paywalls?” Birdie Pirdie(Trini Tap2Fly) is ranked 154th while Open Field Echo Sounder is ranked 173rd. The most important reason people chose Birdie Pirdie(Trini Tap2Fly) is:
It's free to download, but there are also no in-app purchases. It also has no ads. It's totally free to the player.
Ranked in these QuestionsQuestion Ranking
Pros
Pro Game for blind and visually impaired
Open Field Echo Sounder is a game for the visually impaired or blind.
Pro 100% free, no ads, no permissions
It's free to download, but there are also no in-app purchases. It also has no ads. It's totally free to the player.
Pro Easy to learn, hard to master
Like any of the games in this style, it's easy to start playing. But it's challenging to get far.
Cons
Con Need headphones to play
When listening for target echos one most likely will need to have on headphones to hear the discernible differences.
Con May have IAPs added to it
The developer does state that IAPs may be added in the future.