geometric...

for Pong 213 with and his pretty Butterfly Hearts [link]
now my choice of plugin 'pulse'[link]

my params (needs plugin SuperShape3d too [link])

<flame name="pong213_felifee_pulse1" version="Apophysis 7x Version 15C.9" size="990 960" center="-0.026 0" scale="326.7" zoom="0.05" cam_zpos="-0.001" cam_dof="0.001" oversample="4" filter="0.8" quality="1" background="0 0 0" brightness="3.40869565217391" gamma="1.08" vibrancy="0.8" estimator_radius="9" estimator_minimum="0" estimator_curve="0.4" enable_de="0" plugins="" new_linear="1" curves="0 0 1 0 0 1 1 1 1 1 1 1 0 0 1 0 0 1 1 1 1 1 1 1 0 0 1 0 0 1 1 1 1 1 1 1 0 0 1 0 0 1 1 1 1 1 1 1" >
<xform weight="0.5" color="0.458" pre_blur="0.001" julia="1" coefs="1 0 0 1 0 0" opacity="1" />
<xform weight="0.5" color="0.48" linear="0.683" pulse="-0.5" coefs="1 0 0 1 0 0" pulse_freqx="2" pulse_freqy="2" pulse_scalex="1" pulse_scaley="2" opacity="1" />
<xform weight="0.5" color="0.396" symmetry="1" pre_blur="0.001" SuperShape3d="1" coefs="0.999952 -0.009798 0.009798 0.999952 0 0" SuperShape3d_rho="2" SuperShape3d_phi="4" SuperShape3d_m1="2" SuperShape3d_m2="1" SuperShape3d_a1="1" SuperShape3d_a2="1" SuperShape3d_b1="1" SuperShape3d_b2="1" SuperShape3d_n1_1="1" SuperShape3d_n1_2="1" SuperShape3d_n2_1="1" SuperShape3d_n2_2="1" SuperShape3d_n3_1="1" SuperShape3d_n3_2="1" SuperShape3d_spiral="-0.368" SuperShape3d_toroidmap="0" opacity="1" />
<xform weight="0.5" color="0.48" linear="0.344" bubble="0.2" julian="0.5" coefs="1 0 0 1 0 0" julian_power="-2" julian_dist="1" chaos="1 2 1 0 " opacity="1" />
<finalxform color="0.108" symmetry="1" pulse="1" coefs="1 0 0 1 0 0" pulse_freqx="25" pulse_freqy="25" pulse_scalex="0.963" pulse_scaley="0.32" />
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</flame>