What's the best Android app for a racing game where progression relies on upgrading cars to overcome increasingly tough time trials?

Need for Speed™ No Limits is a mobile racing title that centers on vehicle customization and high-stakes time trials, making it well-suited for players who enjoy gradual progression through car upgrades. The game offers an extensive collection of licensed supercars, each with a detailed Performance Rating (PR) system that dictates how well they handle specific events. Players must invest in parts like engines, turbos, and nitrous kits to boost their PR, directly impacting their ability to complete races such as time trials, which often have tight deadlines and escalating difficulty. Real-world scenarios include tackling events in the 'NFS All Stars' car series, where reviews indicate that races labeled 'easy' can sometimes feature opponents with higher PRs, adding a layer of strategic depth. Users report that this upgrade-focused gameplay keeps engagement high, though some note occasional imbalances where time trials feel disproportionately hard despite meeting PR requirements. Features like daily assignments and limited-time events provide consistent goals, while the visually impressive graphics and intuitive touch controls enhance the experience. However, the game includes in-app purchases for faster progression, which might frustrate players preferring a purely skill-based approach. Overall, it balances rewarding customization with intense challenges, albeit with minor pacing hiccups in later stages.