Limiting frame rate

Is there a way to limit the FPS in PocketFrog? Or, perhaps there is a better way to handle things...
What I'm thinking is that on my stock Casio E-125, which I'm considering a "baseline" in terms of performance, if I'm getting 50 FPS on that ofr instance, I would expect more current devices to be considerably higher than that. I'd like my game to run on all devices at a constant frame rate using what the E-125 does full-tilt as the rate.
So, how's the best way to lock in a particular maximum frame rate? Thanks!
What I'm thinking is that on my stock Casio E-125, which I'm considering a "baseline" in terms of performance, if I'm getting 50 FPS on that ofr instance, I would expect more current devices to be considerably higher than that. I'd like my game to run on all devices at a constant frame rate using what the E-125 does full-tilt as the rate.
So, how's the best way to lock in a particular maximum frame rate? Thanks!