The animation I created in After Effects was a circle slowly morphed into a square, I just adjusted the path property to create the effect. I exported it as SVG with Bodymovin plugin. The animation works fine on Windows and Android, but it does not work on iOS browsers (Safari/Chrome).
I am frustrated and greatly appreciate if anyone can help. Thank you.
<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" preserveAspectRatio="xMidYMid meet" width="200" height="200" viewBox="0 0 200 200" style="width:100%;height:100%">
<defs>
<animate repeatCount="indefinite" dur="3s" begin="0s" xlink:href="#_R_G_L_1_G_M" fill="freeze" attributeName="opacity" from="0" to="1" keyTimes="0;0.4722222;0.4722236;1" values="0;0;1;1" keySplines="0 0 0 0;0 0 0 0;0 0 0 0" calcMode="spline" />
<animate repeatCount="indefinite" dur="3s" begin="0s" xlink:href="#_R_G_L_0_G_D_0_P_0" fill="freeze" attributeName="d" attributeType="XML" from="M106.25 48.75 C106.25,76.67 82.52,99.3 53.25,99.3 C23.98,99.3 0.25,76.67 0.25,48.75 C0.25,20.83 23.98,-1.8 53.25,-1.8 C82.52,-1.8 106.25,20.83 106.25,48.75z " to="M105.75 102 C105.75,102 -1,102.3 -1,102.3 C-1,102.3 0.25,-3.75 0.25,-3.75 C0.25,-3.75 105.5,-3.3 105.5,-3.3 C105.5,-3.3 105.75,102 105.75,102z " keyTimes="0;0.4722222;1" values="M106.25 48.75 C106.25,76.67 82.52,99.3 53.25,99.3 C23.98,99.3 0.25,76.67 0.25,48.75 C0.25,20.83 23.98,-1.8 53.25,-1.8 C82.52,-1.8 106.25,20.83 106.25,48.75z ;M105.75 102 C105.75,102 -1,102.3 -1,102.3 C-1,102.3 0.25,-3.75 0.25,-3.75 C0.25,-3.75 105.5,-3.3 105.5,-3.3 C105.5,-3.3 105.75,102 105.75,102z ;M105.75 102 C105.75,102 -1,102.3 -1,102.3 C-1,102.3 0.25,-3.75 0.25,-3.75 C0.25,-3.75 105.5,-3.3 105.5,-3.3 C105.5,-3.3 105.75,102 105.75,102z " keySplines="0.167 0.167 0.833 0.833;0 0 0 0" calcMode="spline" />
<animate repeatCount="indefinite" dur="3s" begin="0s" xlink:href="#_R_G_L_0_G_M" fill="freeze" attributeName="opacity" from="1" to="0" keyTimes="0;0.4722222;0.4722222;1" values="1;1;0;0" keySplines="0 0 0 0;0 0 0 0;0 0 0 0" calcMode="spline" />
<animate attributeType="XML" attributeName="opacity" dur="3s" from="0" to="1" xlink:href="#time_group" />
</defs>
<g id="_R_G">
<g id="_R_G_L_1_G_M">
<g id="_R_G_L_1_G" transform=" translate(100, 100) translate(-53.25, -53.25)">
<path id="_R_G_L_1_G_D_0_P_0" fill="#fb9588" fill-opacity="1" fill-rule="nonzero" d=" M0.25 106.25 C0.25,106.25 106.25,106.25 106.25,106.25 C106.25,106.25 106.25,0.25 106.25,0.25 C106.25,0.25 0.25,0.25 0.25,0.25 C0.25,0.25 0.25,106.25 0.25,106.25z " />
</g>
</g>
<g id="_R_G_L_0_G_M">
<g id="_R_G_L_0_G" transform=" translate(100, 100) translate(-53.25, -48.75)">
<path id="_R_G_L_0_G_D_0_P_0" fill="#834d4d" fill-opacity="1" fill-rule="nonzero" d=" M106.25 48.75 C106.25,76.67 82.52,99.3 53.25,99.3 C23.98,99.3 0.25,76.67 0.25,48.75 C0.25,20.83 23.98,-1.8 53.25,-1.8 C82.52,-1.8 106.25,20.83 106.25,48.75z " />
</g>
</g>
</g>
<g id="time_group" />
</svg>
Hope the animation will show on iOS browsers.