SYTTPMS vs TPMSII
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SYTTPMS
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智炫(TPMS)TX500/TN500胎压监测报警器,适用于iphone的应用。驾驶者坐在车内配合手机APP就能轻松监控4个轮胎的胎压和胎温。当轮胎出现气压过低或过高、温度过高、传感器电池电量过低等异常情况时,手机会立即发出警示声和震动来提醒驾驶者,使驾驶者及时减速停车检查轮胎,确保安全驾驶。 产品的特点: 1、插接汽车OBD口,即插即用,蓝牙无线连接。 2、当轮胎出现漏气、压力过低或者过高、轮胎温度过高等异常情况时,接收器即刻报警,同时软件界面也进入报警状态。 3、APP支持中文、英文语言设置;四种气压单位(Bar、Psi、Kpa、kgf/cm2) 以及两种温度单位(℃,℉)的设置。 4、APP可自由调换轮胎位置和手动学习传感器,方便用户调整。 DIY TPMS for iphone(TX500) & TPMS for iphone(TN500) from ShenYongtong,are an Tire Pressure Monitoring System(TPMS) to work with IOS APP in a vehicle for realtime monitoring individual tire pressure and temperature once Bluetooth from iphone/ipad connected as monitor to ensure on-road safety. Features 1、Power Supply through the vehicle diagnostic system(OBD),Wireless transmission. 2、Real-time monitoring and display,Audio and visual warning. 3、Converitable language,pressure unit(Bar、Psi 、Kpa、Kgf/cm2) and temperature unit(℃,℉). 4、Free exchange tire position sensor and manual learning.
TPMSII
Monitor your car's tire pressure and temperature in real-time using your smartphone. Receive timely alerts for abnormal conditions to ensure safer driving. Requires Bluetooth 4.0 and a compatible sensor.
- Real-time tire pressure monitoring
- Real-time tire temperature monitoring
- Bluetooth sensor integration
- Abnormal data alerts
- Background monitoring
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"TMPSII" is a car tire pressure detection system application software designed for smartphones. It is suitable for smartphones with Bluetooth 4.0 version. It cooperates with the Bluetooth sensor installed on the car to receive the pressure, temperature, and air leakage of the four tires. The tire pressure and temperature data are monitored in real time when the car is driving. When the data is abnormal, the "smart tire pressure" can be alerted in time to ensure driving safety. 【Precautions】 1. Please make sure that Bluetooth is turned on normally so that "Smart Tire Pressure" can be used normally. 2. The background voice will continue to monitor sudden tire conditions in the background. When switching to the background broadcast, it will consume more power than other operations.
Screenshots
Verdict
The clearest difference is iOS requirement: TPMSII at 9.0 against SYTTPMS's 13.0. On price, update cadence, ads and in-app purchases 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.
Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on September 13, 2026 and June 11, 2026 respectively.
| Parameter | SYTTPMS | TPMSII |
|---|---|---|
| Price | Free | Free |
| Rating | — | 3.7 (6 ratings) — better |
| Positive reviews | — | 35.3% of reviews |
| Number of ratings | — | 6 — better |
| Update frequency | Every 2 months | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 13.0 | 9.0 — better |
| Further details — not scored | ||
| Size | 1 MB | 124 MB |
| Age rating | 4+ | 4+ |
| Developer | Shenzhen Shenyongtong Industry Co., Ltd. | Shenzhen Chaoyue Technology Development Co.,Ltd |
In-app purchases
SYTTPMS
No in-app purchases
TPMSII
No in-app purchases









