Modern Subway Surfers bombards the player with Score Boosters, Head Starts, and Mystery Hoverboards. In , power-ups were rare, spawned organically, and did not stack. The Super Sneakers gave you higher jumps; the Coin Magnet worked for a brief 5 seconds; the Jetpack was the ultimate jackpot. There were no "Multipliers" listed permanently at the top of the screen. Your score was purely a result of raw distance, not boosters.
This is more complex. Version 1.7.3 is 32-bit. Modern iOS versions (11+) do not support 32-bit apps. You would need a jailbroken device running iOS 6 or 7, or use sideloading tools like AltStore with an old IPA file.
Have you played Subway Surfers 1.7.3? Share your memories of the classic subway tracks in the comments below.