HY Exhaust vs Smart HL
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
HY Exhaust
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HY Exhaust是一款通过蓝牙控制车辆的排气设备的软件。 该软件分为手动和自动两种操作：手动操作即需要用户手动点击开启或关闭按钮来控制阀门的开关；自动操作则只要点击自动按钮即可，阀门会根据用户设置的转速和延迟关闭时间作出反应，当发动机转速达到用户设置的转速时即会开启阀门，当发动机转速变为低于用户设置的转速时会根据延迟关闭时间延时关闭阀门，防止汽车转速在改变过程中频繁打开或关闭阀门。
Smart HL
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Car headlights swivel with your steering. Use the app to adjust brightness, steering angle, and adaptive mode.
Screenshots
Verdict
The clearest difference is update cadence: Smart HL at monthly against HY Exhaust's every 2 months. HY Exhaust's advantage is iOS requirement (11.0 vs 13.0). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
HY Exhaust ships an update every 2 months, Smart HL monthly. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.
| Parameter | HY Exhaust | Smart HL |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 11.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 29 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | 可 冯 | 人忠 张 |
In-app purchases
HY Exhaust
No in-app purchases
Smart HL
No in-app purchases
