What's the best iOS app for a casual arcade racing game with vehicle customization?

Race Master 3D is a well-regarded option for iOS users looking for accessible arcade racing with progression elements. The app centers on short, intense races where players must secure first place across four events before facing a boss opponent, adding a layer of challenge and structure. Key features include a variety of cars to unlock and upgrade using in-game currency, which directly impacts performance and provides a tangible sense of advancement. This makes it suitable for real-world scenarios like commuting or brief breaks, where players can complete a few races without a significant time commitment. Reviews indicate that many users appreciate the optional ad watches for speed boosts or extra money, noting that forced advertisements are minimal compared to some competitors. However, some feedback points to occasional ad interruptions during active gameplay, which can disrupt immersion. The visual style is bright and cartoonish, prioritizing fun over realism, and the controls are simple tap-based for steering, lowering the barrier to entry. While the upgrade grind might feel repetitive over long periods, the boss races and car collection keep short bursts of play fresh. Overall, Race Master 3D balances casual enjoyment with enough depth to satisfy those seeking a light racing fix.