Comparison

Happ+ vs OBD2 Car Scanner ELM 327 DTC

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Happ+

Monitor your ECG, heart rate, and stress levels anytime, anywhere with this mobile healthcare system. It records and analyzes body signals, providing results and saving capabilities for various health indices. Data can be transmitted via email for further review.

Highlights
  • Interactive ECG monitor
  • Real-time heart rate and stress monitoring
  • Save health data up to 24 hours
  • Analysis results for health indices
  • Transmit vital signs via email
  • Compatible with iOS devices
Features
Read full description

“Anytime, anywhere” Monitoring of your ECG Solmitech Mobile Healthcare Systems Happ+ is your best partner for ECG, heartbeat, and stress monitoring. You can check your body signals wherever and whenever you want. - Interactive ECG monitor – see and record ECG with Solmitech’s ECG monitor (SHC-U9) - Monitor ECG, heart rate, HRV and stress levels in real time. - Monitor and save the health data for maximum 24 hours. - Patch-type, garment-type, and belt-type measuring sensors are available to monitor health signals. - Interworking with a smart phone (iOS) - Provide analysis results and saving capabilities for various health indices. - Transmit the saved data for vital signs via e-mail. Applications - Health & Leisure ∙ Walking/Running/Climbing/Cycling/In-line skating/Etc. - Hospital & Society ∙ Health club/School/Rest home/Nursing home/Etc. - Sports & Military ∙ Soccer/Marathon/Baseball/Basketball/Volleyball/Swimming/Soldier/Etc. - Refit Patch U8 and U9 devices, which work with the Happ+ App, received the class II Korea FDA certificate approval from Republic of Korea. Reference to Refit Patch products or services on the Happ+ App does not imply that such products or services are or will be available in your country/region, and such products or services may be subject to different regulations and conditions of use. - The products and measurement results provided by this App are not intended to diagnose, treat, or cure any disease. It is recommended to discuss with the medical professionals for the medical advice. - Please check with a doctor in addition to using the Happ+ App before making medical decisions. Developer Contact - www.solmitech.com - B-622, Biz Center, 17, Techno 4-ro, Yuseong-gu, Daejeon, Korea - Tel: +82-70-7558-9877

About

OBD2 Car Scanner ELM 327 DTC

Transform your iPhone into a comprehensive car diagnostic tool. Monitor real-time engine data, read and clear trouble codes, track performance, and manage vehicle maintenance. Offers a demo mode for exploration before hardware purchase.

Highlights
  • Real-time engine data dashboard
  • Read and clear diagnostic trouble codes (DTCs)
  • Performance testing (0-60 mph, 1/4 mile)
  • Battery health monitoring
  • Vehicle maintenance reminders
  • Data recording and PDF export
  • Demo mode for exploration
Features
Read full description

Turn your iPhone into a powerful car diagnostic tool. OBDPro connects to your vehicle's OBD-II port via Wi-Fi or Bluetooth LE ELM327 adapters and gives you real-time access to engine data, trouble codes, performance metrics and more. LIVE DASHBOARD • Real-time RPM, speed, coolant temp, throttle, MAF, engine load, voltage and 15+ engine parameters • Beautiful analog gauges with animated needles — just like a real tachometer • 4 dashboard themes: Standard, Racing (blue), Eco (green), Sport (red) • Customizable refresh rate down to 0.2s for near real-time updates • Switch between metric and imperial units FULL DIAGNOSTICS • Read diagnostic trouble codes (DTCs) with plain-English descriptions • In-depth code details: severity, possible causes, symptoms and suggested repair • Clear check engine light with double-confirmation safety prompt • View I/M readiness monitors for emission test preparation PERFORMANCE TESTS • 0–60 mph, 0–100 km/h, 0–200 km/h, 1/4 mile, 1/8 mile and 100–0 km/h braking • Live timer, distance and max-speed tracking • Save runs, see your personal best and full test history BATTERY HEALTH • Live voltage trend with smart engine/charging/cranking diagnosis • 30-day min/max/avg voltage history • Get alerted before your battery dies MY GARAGE • Add your vehicles with brand, model, year, engine type, VIN and color • 100+ official car brand logos • Service reminders for oil, brakes, tires, filters, spark plugs and more • Track mileage and get notified when service is due DATA RECORDING & EXPORT • Record live sessions while driving (as a passenger!) • Review session statistics — min, max and average for every parameter • Export professional PDF reports to share with your mechanic WIDE ADAPTER SUPPORT • Wi-Fi ELM327 adapters • Bluetooth LE 4.0+ ELM327 adapters (Vgate, Veepeak, OBDLink and more) • Automatic adapter detection and protocol negotiation DEMO MODE • Try every feature with simulated vehicle data — no adapter needed • Perfect for exploring the app before purchasing hardware 32 LANGUAGES Available in English, Spanish, French, German, Italian, Portuguese, Dutch, Polish, Russian, Turkish, Japanese, Korean, Chinese (Simplified), Arabic, Hindi and 17 more. FREE vs PRO Free includes: • Connect via Wi-Fi, Bluetooth LE or Demo • Live dashboard with core PIDs (RPM, speed, coolant, throttle…) at 1s refresh • Read DTCs with code title and description • 0–60 mph, 0–100 km/h and 1/4 mile performance tests • 1 saved recording session and 1 free PDF export • 1 vehicle in your garage with oil-change tracking OBDPro unlocks: • All 15+ PIDs and faster 0.2s refresh • Racing, Eco and Sport dashboard themes • Detailed DTC causes, symptoms and repair guide • Clear DTC codes (Mode 04) • Battery Health trends, alerts and 30-day history • Unlimited vehicles in My Garage • Full service reminders (brakes, tires, filters, spark plugs…) • 0–200 km/h, 1/8 mile and 100–0 km/h braking tests • Save performance runs, personal bests and history • Unlimited recording sessions and unlimited PDF exports IMPORTANT SAFETY NOTICE This app reads ECU data for informational purposes only. Do NOT operate while driving. Always park safely before using diagnostics. OBDPro is not a substitute for professional automotive inspection or repair. Compatible with all OBD-II vehicles (1996+ US, 2001+ EU). Requires an ELM327-compatible Wi-Fi or Bluetooth LE adapter (sold separately). Subscriptions automatically renew unless cancelled at least 24 hours before the end of the current period. Manage in Settings → Apple ID → Subscriptions. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://sites.google.com/view/obd2scan/ana-sayfa/privacy-policy Contact: tr.metin.atalay@gmail.com

Screenshots

Happ+4 screens
OBD2 Car Scanner ELM 327 DTC4 screens

Verdict

The call

The clearest difference is in-app purchases: Happ+ at none against OBD2 Car Scanner ELM 327 DTC's 3. Happ+ also leads on iOS requirement (12.0 vs 18.0). On price, rating, ratings volume and update cadence 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. OBD2 Car Scanner ELM 327 DTC sells 3 in-app purchases, starting at $3.99 per 7 days. Happ+ asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 1.0 for Happ+ against 1.0 for OBD2 Car Scanner ELM 327 DTC. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

UpkeepUpdate frequency

Happ+ ships an update every 4 weeks, OBD2 Car Scanner ELM 327 DTC every 3 weeks. The most recent releases landed on October 12, 2026 and October 24, 2026 respectively.

Scorecard3 real differences · 6 level
Happ+ versus OBD2 Car Scanner ELM 327 DTC: the parameters behind the verdict, then further details
ParameterHapp+OBD2 Car Scanner ELM 327 DTC
PriceFreeFree
Rating1.0 (1 ratings)1.0 (1 ratings)
Number of ratings11
Update frequencyEvery 4 weeksEvery 3 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFreemium
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS12.0 — better18.0
Further details — not scored
Size27 MB44 MB
Age rating4+4+
DeveloperSolmitech Co., Ltd.Metin Atalay

Customer experience

Happ+

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%

OBD2 Car Scanner ELM 327 DTC

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

None

Happ+

No in-app purchases

3 purchases

OBD2 Car Scanner ELM 327 DTC

Subscriptions3
  • Pro Weekly$3.997 Days
  • Pro Monthly$6.991 Month
  • Pro Annual$14.991 Year

Questions

Is Happ+ free?
Happ+ is free to download, with no in-app purchases.
Is OBD2 Car Scanner ELM 327 DTC free?
OBD2 Car Scanner ELM 327 DTC is free to download, with in-app purchases available.
Which has better reviews, Happ+ or OBD2 Car Scanner ELM 327 DTC?
Happ+ and OBD2 Car Scanner ELM 327 DTC are both rated 1.0 out of 5 on the App Store, from 1 and 1 ratings respectively.
Do Happ+ or OBD2 Car Scanner ELM 327 DTC have ads?
Neither Happ+ nor OBD2 Car Scanner ELM 327 DTC shows ads.
Which is updated more often, Happ+ or OBD2 Car Scanner ELM 327 DTC?
Happ+ ships an update every 4 weeks, and OBD2 Car Scanner ELM 327 DTC every 3 weeks. Most recently, Happ+ was updated on October 12, 2026 and OBD2 Car Scanner ELM 327 DTC on October 24, 2026.

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