Calc Deluxe vs VIN Decode RPO
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Calc Deluxe
A user-friendly scientific calculator that displays equations and running totals. It offers convenient deletion options for characters or the entire equation. Purchase once for access on iPhone, iPad, Mac, and Apple Watch.
- Equation display
- Running total
- Character deletion
- Clear entire equation
- Cross-device compatibility
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Easy to use! Scientific calculator with equation and running total displayed. You can delete the last character with a short press, long press delete to clear the entire equation. For one low price you get the app for the iPhone, iPad, Mac, and Watch!
VIN Decode RPO
Instantly decode GM vehicle RPO codes by scanning the QR code on your vehicle's label. Get a clear list of factory options installed on your car, making it easy to understand its specifications. Supports 2017 and newer model years.
- Scan GM vehicle QR codes
- Decode RPO (Regular Production Option) codes
- Get clear descriptions of factory options
- Supports 2017+ model years
- Simple and intuitive interface
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Decode RPO – VIN Decoder for GM, Ford & Mopar Vehicles Decode RPO is a simple and powerful mobile VIN decoder that helps you identify factory-installed equipment, options, and vehicle specifications for GM, Ford, and Mopar vehicles, including Chevrolet, GMC, Cadillac, Buick, Ford, Lincoln, Chrysler, Dodge, Jeep, and Ram. Simply enter your Vehicle Identification Number (VIN) or scan the VIN label on a supported vehicle label to access detailed factory equipment information, option codes, and their descriptions. How It Works 1. Open the app and enter a 17-character VIN or scan a supported VIN label on the vehicle label. 2. The app identifies the vehicle and retrieves available factory equipment and option information. 3. Browse a readable list of equipment codes and descriptions to understand how the vehicle was originally configured. The amount of available equipment data may vary depending on the manufacturer, model, model year, and market. DecodeRPO is an independent application and is not affiliated with, endorsed by, or sponsored by General Motors, Ford Motor Company, Stellantis, or any of their respective brands. All vehicle names and trademarks belong to their respective owners.
Screenshots
Verdict
The clearest difference is price: VIN Decode RPO at Free against Calc Deluxe's $1.49. VIN Decode RPO also leads on ratings volume (48 vs 1). Calc Deluxe's advantage is device support (4 vs 2). On rating, update cadence, ads and in-app purchases 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
VIN Decode RPO is free to download; Calc Deluxe costs $1.49 up front. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 5.0 for Calc Deluxe against 4.9 for VIN Decode RPO. That said, the two scores are not equally well evidenced: VIN Decode RPO has 48 ratings behind it against 1, so its average is the more settled of the two.
Calc Deluxe ships an update every 4 days, VIN Decode RPO every 3 days. The most recent releases landed on November 3, 2026 and November 9, 2026 respectively.
| Parameter | Calc Deluxe | VIN Decode RPO |
|---|---|---|
| Price | $1.49 | Free — better |
| Rating | 5.0 (1 ratings) — better | 4.9 (48 ratings) |
| Number of ratings | 1 | 48 — better |
| Update frequency | Every 4 days | Every 3 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Ad-supported — better |
| Devices | iPhone, iPad, Mac, Apple Watch — better | iPhone, iPad |
| Requires iOS | 16.0 — better | 16.4 |
| Further details — not scored | ||
| Size | 4 MB | 57 MB |
| Age rating | 4+ | 4+ |
| Developer | stephen feggeler | Vyacheslav Kravchina |
Customer experience
Calc Deluxe
VIN Decode RPO
In-app purchases
Calc Deluxe
No in-app purchases
VIN Decode RPO
No in-app purchases
Questions
Is Calc Deluxe free?
Is VIN Decode RPO free?
Which has better reviews, Calc Deluxe or VIN Decode RPO?
Do Calc Deluxe or VIN Decode RPO have ads?
Which is updated more often, Calc Deluxe or VIN Decode RPO?
Other comparisons
