WreckMaster vs Scan
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
WreckMaster
This app helps towing and recovery operators calculate resistance and load forces. It assists with calculations for surface and gradient resistance, and includes features for anchorability, weight transfer, and fleet truck management with its in-app purchase.
- Resistance and load force calculations
- Surface and gradient resistance calculation
- Anchorability and weight transfer calculation
- Fleet truck information saving
- Towing and lift capacity at fingertips
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This multi-function Resistance and Load Calculator was designed to aid towing and recovery operators in calculating resistance and the load forces encountered during every recovery. It will assist towing operators in performing the calculations of surface and gradient resistance such as rolling, damage, mire and gradient. Our first in-app purchase also includes the following: - It will assist you in calculating anchorability and weight transfer automatically. - Allow you to upload and save information for each truck in your fleet by entering the static weight of each axle along with the wheel base and 3 distances of overhang. This information will be saved in the app so that you may select the truck you are operating and have the actual towing capacity and lift capacity at your finger tips. New features will be added for the full paid version.
Scan
Easily manage Whelen flash patterns for compatible lightheads using your phone. Browse, test, and assign patterns wirelessly via Bluetooth with a required programmer.
- Browse and assign flash patterns
- Test patterns up to 20 seconds
- Access steady pattern option
- Bluetooth connectivity
- Supports compatible Whelen lightheads
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Scan-Lock+ is the simplest way to change Whelen flash patterns. Designed for optimal convenience, Scan-Lock+ features an easy to use interface and utilizes a Bluetooth connection. Download the Scan-Lock+ app and browse, test, and assign Whelen flash patterns right from your phone. Key Features Scroll and Update Flash Patterns Using a Scan-Lock+ Programmer, pair any compatible Whelen lighthead with the Scan-Lock+ app and easily browse, test, and assign flash patterns. Test Flash Patterns Preview any flash pattern for up to 20 seconds. Easily Access the Steady Pattern Enable the steady option right from the top of the flash pattern list. Bluetooth Connectivity The Scan-Lock+ app communicates to a Scan-Lock+ Programmer via Bluetooth connection. Supported Whelen Lightheads Compatible with any Whelen lighthead that supports Scan-Lock+ or the original Scan-Lock. A Scan-Lock+ Programmer is required to use this app. See more at www.whelen.com/scanlockplus
Screenshots
Verdict
The clearest difference is in-app purchases: Scan at none against WreckMaster's 1. Scan also leads on update cadence (every 3 weeks vs every 24 months) and iOS requirement (8.0 vs 15.0). On price, rating, ratings volume 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
Both are free to download. WreckMaster sells 1 one-off in-app purchase. Scan asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 5.0 for WreckMaster against 5.0 for Scan. Both are backed by a comparable volume of ratings — 3 and 5 respectively.
WreckMaster ships an update every 24 months, Scan every 3 weeks. The most recent releases landed on September 28, 2026 and September 23, 2026 respectively.
| Parameter | WreckMaster | Scan |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (3 ratings) | 5.0 (5 ratings) |
| Number of ratings | 3 | 5 — better |
| Update frequency | Every 24 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.0 | 8.0 — better |
| Further details — not scored | ||
| Size | 56 MB | 41 MB |
| Age rating | 4+ | 4+ |
| Developer | WreckMaster | Whelen Engineering Co. |
Customer experience
WreckMaster
Scan
In-app purchases
WreckMaster
- Can I Tow it?$19.99
Scan
No in-app purchases
