# Scan n Gen vs Operational Amplifiers Pro

The clearest difference is price: Scan n Gen at Free against Operational Amplifiers Pro's $4.99. Scan n Gen also leads on ratings volume (5 vs 1) and iOS requirement (15.0 vs 17.0). Operational Amplifiers Pro's advantage is rating (5.0 vs 3.4) and update cadence (every 2 months vs every 9 months). On ads, in-app purchases and device support there is nothing between them.

Scan n Gen is free to download; Operational Amplifiers Pro costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Operational Amplifiers Pro holds the better App Store score, 5.0 against 3.4. That said, the two scores are not equally well evidenced: Scan n Gen has 5 ratings behind it against 1, so its average is the more settled of the two.

Scan n Gen ships an update every 9 months, Operational Amplifiers Pro every 2 months. The most recent releases landed on November 2, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | Scan n Gen | Operational Amplifiers Pro |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| Rating | [3.4 (5 ratings)](https://appshunter.io/ios/app/scan-n-gen/id1454243980/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/operational-amplifiers-pro/id6467253953/reviews)** |
| Number of ratings | **5** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 2 months** |
| Monetization | **Free** | Paid |
| Best chart rank | — | **#188** |
| Size | 45 MB | 14 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [V Group Inc](https://appshunter.io/developer/916210832) | [ALG Software Lab](https://appshunter.io/developer/1650561236) |

## What reviewers say

### Scan n Gen

[App page](https://appshunter.io/ios/app/scan-n-gen/id1454243980)

This utility app quickly scans barcodes, QR codes, NFC tags, and text from images using OCR. It also allows users to create and share custom barcodes and QR codes.

**Highlights:** Scan barcodes and QR codes, Read NFC tags, OCR text recognition from images, Generate custom QR codes and barcodes, Share generated codes and text, Flashlight feature for scanning

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Operational Amplifiers Pro

[App page](https://appshunter.io/ios/app/operational-amplifiers-pro/id6467253953)

**Currently charting:** #188 Top Paid · Utilities (US App Store)

This app provides interactive calculators and reference information for designing and analyzing op-amp circuits. It offers step-by-step explanations and technical data on popular op-amp series, aiding students and engineers in circuit development and prototyping.

**Highlights:** Interactive op-amp circuit calculators, Step-by-step explanations and formulas, Reference data on op-amps and comparators, Support for 14 languages, Light and dark mode, Advanced calculators and circuit guides (Pro), Full-text search (Pro)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Scan n Gen free?

Scan n Gen is free to download, with no in-app purchases.

### Is Operational Amplifiers Pro free?

Operational Amplifiers Pro costs $4.99, with no in-app purchases.

### Which has better reviews, Scan n Gen or Operational Amplifiers Pro?

Operational Amplifiers Pro is rated higher. Scan n Gen averages 3.4 out of 5 from 5 ratings, while Operational Amplifiers Pro averages 5.0 from 1 ratings.

### Do Scan n Gen or Operational Amplifiers Pro have ads?

Neither Scan n Gen nor Operational Amplifiers Pro shows ads.

### Which is updated more often, Scan n Gen or Operational Amplifiers Pro?

Scan n Gen ships an update every 9 months, and Operational Amplifiers Pro every 2 months. Most recently, Scan n Gen was updated on November 2, 2026 and Operational Amplifiers Pro on November 7, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*