Comparison

NapaPD vs PlateTrace

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

Head to head
About

NapaPD

Features
Read full description

The NapaPD app provides citizens the ability to submit anonymous tips to the Napa, CA Police Department. The app also displays agency online crime map, and other organization web and social media content.

About

PlateTrace

This utility app uses your iPhone's camera to automatically detect and record license plates. It captures images, date, time, GPS location, and vehicle details, storing everything securely on your device for privacy.

Highlights
  • Automatic license plate detection
  • Image capture
  • Date and time recording
  • GPS location logging
  • Vehicle make, model, and color identification
  • Secure on-device storage
Read full description

PlateTrace transforms your iPhone into a professional automatic license plate recognition (ALPR) and vehicle identification solution for law enforcement, public safety, parking enforcement, and security operations. Powered by Leonardo's advanced machine learning, neural network technology, and optical character recognition (OCR), PlateTrace license plate reader identifies vehicle characteristics—including make, type, model, and color—in real-world conditions, with highly accurate results. Whether you're managing traffic, searching for a specific vehicle, conducting an investigation, enforcing parking and tolling compliances, or managing access control, PlateTrace delivers fast, reliable plate recognition performance from your mobile device. Key Features User-friendly interface allows you to simply point your camera at a license plate and PlateTrace will automatically read it Highly accurate license plate recognition using your iPhone camera Accurate vehicle identification, including make, model, type, and color Valuable license plate images stamped with GPS location, date, and time Secure LPR data storage on your device Simple uploading of ALPR data to Leonardo's ELSAG® Enterprise Operations Center (EOC) for query and analysis Flexible integration with Leonardo's ALPR ecosystem and third-party applications through APIs PlateTrace combines the convenience of a mobile device with the power of Leonardo's proven automatic license plate recognition (ALPR) technology. Advanced machine learning continuously improves OCR performance across varying lighting conditions, viewing angles, weather, and vehicle movement to help deliver highly accurate results in the field. Ideal for: Law enforcement Public safety Parking management Security operations Tolling operations Smart city initiatives Download PlateTrace today and bring Leonardo's trusted license plate recognition, vehicle identification, and ALPR technology wherever your mission takes you.

Screenshots

NapaPD3 screens
PlateTrace4 screens

Verdict

The call

The clearest difference is update cadence: PlateTrace at every 5 months against NapaPD's every 39 months. NapaPD's advantage is iOS requirement (13.0 vs 18.0). On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

NapaPD ships an update every 39 months, PlateTrace every 5 months. The most recent releases landed on November 6, 2026 and October 30, 2026 respectively.

Scorecard2 real differences · 8 level
NapaPD versus PlateTrace: the parameters behind the verdict, then further details
ParameterNapaPDPlateTrace
PriceFreeFree
Rating—3.7 (6 ratings) — better
Positive reviews—80.0% of reviews
Number of ratings—6 — better
Update frequencyEvery 39 monthsEvery 5 months — better
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, iPodiPhone, iPad
Requires iOS13.0 — better18.0
Further details — not scored
Size37 MB319 MB
Age rating4+4+
DeveloperCity of NapaLeonardo-US

In-app purchases

None

NapaPD

No in-app purchases

None

PlateTrace

No in-app purchases

Questions

Is NapaPD free?
NapaPD is free to download, with no in-app purchases.
Is PlateTrace free?
PlateTrace is free to download, with no in-app purchases.
Do NapaPD or PlateTrace have ads?
Neither NapaPD nor PlateTrace shows ads.
Which is updated more often, NapaPD or PlateTrace?
NapaPD ships an update every 39 months, and PlateTrace every 5 months. Most recently, NapaPD was updated on November 6, 2026 and PlateTrace on October 30, 2026.

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