Leftover Note vs PlateTrace
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Leftover Note
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You can check expiration dates of the leftover foods and receive reminder notifications before expiration.
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.
- Automatic license plate detection
- Image capture
- Date and time recording
- GPS location logging
- Vehicle make, model, and color identification
- Secure on-device storage
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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
Verdict
Leftover Note and PlateTrace are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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. Neither carries in-app purchases, so what you see is what you pay.
Leftover Note ships an update every 3 months, PlateTrace every 5 months. The most recent releases landed on October 25, 2026 and October 30, 2026 respectively.
| Parameter | Leftover Note | PlateTrace |
|---|---|---|
| Price | Free | Free |
| Rating | — | 3.7 (6 ratings) — better |
| Positive reviews | — | 80.0% of reviews |
| Number of ratings | — | 6 — better |
| Update frequency | Every 3 months — better | Every 5 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 10 MB | 319 MB |
| Age rating | 4+ | 4+ |
| Developer | WOOSEOK LEE | Leonardo-US |
In-app purchases
Leftover Note
No in-app purchases
PlateTrace
No in-app purchases









