Comparison

AlphaTech Plotter vs OBD2 Car Scanner ELM327

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

Head to head
About

AlphaTech Plotter

Features
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AlphaTech Plotter is an innovative offline tool that helps you plan, visualize, and print precise screen layout templates for a wide range of phone models. Designed for both professional and personal use, it delivers accurate measurements for cutters and other devices — all processed locally on your device with no data collection.

About

OBD2 Car Scanner ELM327

Decode your car's check engine light with AI. Get plain-language explanations of trouble codes, likely causes, and urgency. Monitor live sensor data and track your car's history.

Highlights
  • Plain-language verdict for trouble codes
  • AI explanations of fault codes
  • Live sensor monitoring (RPM, temp, etc.)
  • Car diagnostic history tracking
  • Support for multiple vehicles
  • Demo mode for pre-purchase testing
Features
Read full description

Your check-engine light just came on. Is it safe to keep driving — or should you stop? Cavox gives you a plain-language read in minutes, right in your car, without a $80–300 dealer visit. Most code readers just show you "P0301" and leave you Googling. Cavox reads the fault, then hands you an AI-written verdict in human language — what it is, likely causes, what to check first, and how urgent it is — so you can make the call yourself. WHAT YOU GET • A plain-language verdict — "Looks OK to drive", "Worth a look", or "There's a problem" — never just a raw code. • AI explanations — every trouble code decoded into what it means and what to do next. • Live monitoring — real sensor readings (RPM, coolant temp, battery, engine load and more), with AI that flags anomalies even when there's no code but the car "feels off". • Your car's history — every scan saved and searchable, so you can see what changed and when. • A garage for several cars — each with its own history. Histories are never merged. • Easy VIN — read it straight from the adapter or scan it from your documents. No typing, no typos. • Demo mode — walk through the whole app on a sample car before you even own an adapter. WORKS WITH YOUR ADAPTER Cavox connects over Bluetooth to a standard OBD-II / ELM327 adapter — the common kind you may already own. No proprietary hardware, no locked ecosystem. HONEST BY DESIGN Cavox never fakes an "all clear". When a reading isn't certain, it tells you and points you to a mechanic instead of guessing. The core verdict is free; Premium unlocks full AI diagnosis, live monitoring and saved history. Safety: always stop your vehicle before running diagnostics. Do not use while driving. Cavox is a diagnostic aid, not a substitute for a professional inspection. It does not guarantee your vehicle is safe — always consult a qualified mechanic before making repair decisions. Privacy Policy: https://cavox.app/privacy-policy Terms of Use: https://cavox.app/terms-of-use

Screenshots

AlphaTech Plotter4 screens
OBD2 Car Scanner ELM3274 screens

Verdict

The call

The clearest difference is in-app purchases: AlphaTech Plotter at none against OBD2 Car Scanner ELM327's 2. AlphaTech Plotter also leads on device support (3 vs 1) and iOS requirement (13.0 vs 18.0). OBD2 Car Scanner ELM327's advantage is update cadence (every 6 days vs every 6 weeks). On price and ads 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 ELM327 sells 2 in-app purchases, starting at $24.99 per month. AlphaTech Plotter asks for nothing beyond the download.

UpkeepUpdate frequency

AlphaTech Plotter ships an update every 6 weeks, OBD2 Car Scanner ELM327 every 6 days. The most recent releases landed on October 4, 2026 and October 9, 2026 respectively.

Scorecard4 real differences · 6 level
AlphaTech Plotter versus OBD2 Car Scanner ELM327: the parameters behind the verdict, then further details
ParameterAlphaTech PlotterOBD2 Car Scanner ELM327
PriceFreeFree
Rating—5.0 (4 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—4 — better
Update frequencyEvery 6 weeksEvery 6 days — better
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Freemium
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS13.0 — better18.0
Further details — not scored
Size24 MB36 MB
Age rating17+4+
DeveloperElchin IsayevLarisa Kozlova

In-app purchases

None

AlphaTech Plotter

No in-app purchases

2 purchases

OBD2 Car Scanner ELM327

Subscriptions2
  • Cavox Premium Monthly$24.991 Month
  • Cavox Premium Yearly$99.991 Year

Questions

Is AlphaTech Plotter free?
AlphaTech Plotter is free to download, with no in-app purchases.
Is OBD2 Car Scanner ELM327 free?
OBD2 Car Scanner ELM327 is free to download, with in-app purchases available.
Do AlphaTech Plotter or OBD2 Car Scanner ELM327 have ads?
Neither AlphaTech Plotter nor OBD2 Car Scanner ELM327 shows ads.
Which is updated more often, AlphaTech Plotter or OBD2 Car Scanner ELM327?
AlphaTech Plotter ships an update every 6 weeks, and OBD2 Car Scanner ELM327 every 6 days. Most recently, AlphaTech Plotter was updated on October 4, 2026 and OBD2 Car Scanner ELM327 on October 9, 2026.

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