Comparison

Plier vs OBDII AI

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

Head to head
About

Plier

Transform your iPhone into an AI-powered car diagnostic tool. Connect to your vehicle via an OBD2 device to understand its health, diagnose issues, and estimate repair costs.

Highlights
  • AI-driven diagnostic reports
  • Real-time OBD2 data and graphs
  • Check engine light insights
  • Repair cost estimation
  • ELM327 Bluetooth compatibility
  • Troubleshoot engine codes
Read full description

Turn your iPhone into a clear, capable OBD2 car scanner with Plier.AI. Connect a compatible Bluetooth ELM327 adapter to read diagnostic trouble codes, view live sensor data and graphs, and understand check-engine warnings. The new Vehicle Health Center brings together a health snapshot, mileage-based maintenance planning, official NHTSA recall checks for saved vehicles, inspection-readiness guidance, and a report you can share with a mechanic. Ask the AI Mechanic vehicle-aware questions about symptoms and active codes. Plier suggests practical tests, explains possible causes, and helps you decide what to check before replacing parts. You can also review supported freeze-frame and oxygen-sensor test data. Available data varies by vehicle, adapter, protocol, and model year. AI guidance and health scores can be wrong and are not proof that a vehicle is safe. Confirm safety-critical findings with a qualified technician. Some features require Plier Pro. Terms of Use: https://plier.ai/tos

About

OBDII AI

Features
Read full description

OBDII AI is a car diagnostic and monitoring application for DA200.support English,Español,Русский,日本語,中文. Through phone, use Bluetooth to communicate with the vehicle ECU to complete fault diagnosis and driving assistance functions. It has automobile detection and analysis functions such as fault code reading and clearing,performance test, and travel analysis. It also supports high-speed data transmission and has the advantages of low power consumption and ultra-power saving. caution: 1. Support the adapter that runs through Bluetooth 4.0/5.0. 2. The parameters supported by each vehicle are different, which has nothing to do with OBDII AI, but is related to the vehicle control unit. 3. OBDII AI supports DA200 series products.

Screenshots

Plier4 screens
OBDII AI3 screens

Verdict

The call

The clearest difference is in-app purchases: OBDII AI at none against Plier's 2. OBDII AI also leads on iOS requirement (13.0 vs 15.0). Plier's advantage is update cadence (weekly vs monthly). On price, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Plier sells 2 in-app purchases, starting at $6.99 per 7 days. OBDII AI asks for nothing beyond the download.

UpkeepUpdate frequency

Plier ships an update weekly, OBDII AI monthly. The most recent releases landed on October 24, 2026 and October 28, 2026 respectively.

Scorecard3 real differences · 7 level
Plier versus OBDII AI: the parameters behind the verdict, then further details
ParameterPlierOBDII AI
PriceFreeFree
Rating4.6 (15 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings15 — better—
Update frequencyWeekly — betterMonthly
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPodiPhone, iPod
Requires iOS15.013.0 — better
Further details — not scored
Size54 MB131 MB
Age rating4+4+
DeveloperHeap Labs LLCShenzhen Chaoyue Technology Development Co.,Ltd

In-app purchases

2 purchases

Plier

Subscriptions2
  • Pro (Weekly)3 Days trial$6.997 Days
  • Pro ( 1 Year )$49.991 Year
None

OBDII AI

No in-app purchases

Questions

Is Plier free?
Plier is free to download, with in-app purchases available.
Is OBDII AI free?
OBDII AI is free to download, with no in-app purchases.
Do Plier or OBDII AI have ads?
Neither Plier nor OBDII AI shows ads.
Which is updated more often, Plier or OBDII AI?
Plier ships an update weekly, and OBDII AI monthly. Most recently, Plier was updated on October 24, 2026 and OBDII AI on October 28, 2026.

Other comparisons