# FlexoCalculator vs Operational Amplifiers Pro

The clearest difference is price: FlexoCalculator at $2.99 against Operational Amplifiers Pro's $4.99. On rating, ratings volume, update cadence and ads there is nothing between them.

FlexoCalculator costs $2.99 and Operational Amplifiers Pro $4.99 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 FlexoCalculator against 5.0 for Operational Amplifiers Pro. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on September 29, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | FlexoCalculator | Operational Amplifiers Pro |
| --- | --- | --- |
| Price | **$2.99** | $4.99 |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/flexocalculator/id1325603568/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/operational-amplifiers-pro/id6467253953/reviews) |
| Number of ratings | **2** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Paid | Paid |
| Size | 12 MB | 14 MB |
| Requires iOS | **15.6** | 16.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Mauro Lussignoli](https://appshunter.io/developer/1310360994) | [ALG Software Lab](https://appshunter.io/developer/1650561236) |

## What reviewers say

### FlexoCalculator

[App page](https://appshunter.io/ios/app/flexocalculator/id1325603568)

This tool assists flexo prepress operators with essential calculations for screen dimensions, minimum print effects, and plate compression distortion. It also handles unit conversions between metric and imperial standards, offering a consolidated solution for prepress needs.

**Highlights:** Calculate screen dimensions in microns, Assess minimum print effects ('dipping'), Determine plate compression distortion, Convert metric to imperial units, Convert imperial to metric units, Brand-free and customizable

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

**In-app purchases:** none


### Operational Amplifiers Pro

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

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 FlexoCalculator free?

FlexoCalculator costs $2.99, 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, FlexoCalculator or Operational Amplifiers Pro?

FlexoCalculator and Operational Amplifiers Pro are both rated 5.0 out of 5 on the App Store, from 2 and 1 ratings respectively.

### Do FlexoCalculator or Operational Amplifiers Pro have ads?

Neither FlexoCalculator nor Operational Amplifiers Pro shows ads.

### Which is updated more often, FlexoCalculator or Operational Amplifiers Pro?

FlexoCalculator ships an update every 2 months, and Operational Amplifiers Pro every 2 months. Most recently, FlexoCalculator was updated on September 29, 2026 and Operational Amplifiers Pro on October 1, 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.*