SYTTPMS vs YMOBD
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.
YMOBD
This tool connects to your car's OBD adapter via Bluetooth to collect real-time engine data, read fault codes, and provide solutions. It also records driving data, analyzes performance, and offers a HUD display for a safer and more enjoyable driving experience.
- Real-time engine data collection
- Vehicle fault code reading and solutions
- Driving data recording and analysis
- Vehicle performance testing (acceleration, braking)
- HUD display function
- Day and night modes
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YMOBD is a practical too. It has the characteristics of simple operation and accurate data, and is suitable for long-term use by car owners and users. Keep your car away from hidden dangers and make driving fun! Connect and communicate with the OBD adapter via Bluetooth: It can collect car engine data in real time, such as engine speed, ignition time, then correction, water temperature, fuel consumption, etc., with two modes of day and night, with HUD display function. It can read vehicle fault codes and provide professional solutions for detected vehicle fault codes. The driving process of the vehicle can be recorded every time. Analyze and summarize data such as mileage, average fuel consumption, driving time, and driving speed. It can test the acceleration, braking, and other performance of the vehicle, and provide analysis reports.
Screenshots
Verdict
The clearest difference is in-app purchases: SYTTPMS at none against YMOBD's 4. SYTTPMS also leads on iOS requirement (13.0 vs 15.0). On price, update cadence, ads 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. YMOBD sells 4 one-off in-app purchases. SYTTPMS asks for nothing beyond the download.
SYTTPMS ships an update every 2 months, YMOBD every 5 weeks. The most recent releases landed on October 1, 2026 and October 8, 2026 respectively.
| Parameter | SYTTPMS | YMOBD |
|---|---|---|
| Price | Free | Free |
| Rating | — | 2.9 (86 ratings) — better |
| Positive reviews | — | 34.3% of reviews |
| Number of ratings | — | 86 — better |
| Update frequency | Every 2 months | Every 5 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 13.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 1 MB | 49 MB |
| Age rating | 4+ | 4+ |
| Developer | Shenzhen Shenyongtong Industry Co., Ltd. | shenzhen yuming |
Bugs and requests
SYTTPMS
Not enough reviews yet to summarise bugs or requests.
YMOBD
Reported bugs
15 issues- App crashes on iPhone 17 Pro
- Purchased add-on requires payment again
- Contact section not working
- App crashes every time on iPhone 17 Pro
- Does not connect at all
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- OBD2 reader not read by software
- No transmission temperature reading
- Bluetooth keeps disconnecting
- App says OBD is connected but doesn't show info
- Updated firmware, now won't connect
- App stopped working after update
- Rarely connects, disconnects when trying to get info
- Email not arriving for account creation
- Captcha not working/sending code
- Does not work on iOS 18
Requested features
10 requests- Dark Mode support
- Landscape mode support
- Store data for comparison over time
- Summary of vehicle diagnostics without connection
- Run in background feature
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- Weekly report of diagnostics
- Allow viewing diagnostic data in offline mode
- Remove need for model, make, year input for quick scans
- More frequent updates and optimizations
- Add landscape function in dashboard
In-app purchases
SYTTPMS
No in-app purchases
YMOBD
- 车辆年检模拟$0.99
- YMOBD-business expansion$1.99
- YMOBD-Battery monitoring$2.99
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- Super Car Sound$5.99









