# CALC 1 Programmable Calculator vs Operational Amplifiers Pro

The clearest difference is rating: Operational Amplifiers Pro at 5.0 against CALC 1 Programmable Calculator's 4.6. Operational Amplifiers Pro also leads on price ($4.99 vs $9.99) and chart position (#198 vs unranked). CALC 1 Programmable Calculator's advantage is ratings volume (9 vs 1). On update cadence, ads, in-app purchases and monetization model there is nothing between them.

CALC 1 Programmable Calculator costs $9.99 and Operational Amplifiers Pro $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 4.6. That said, the two scores are not equally well evidenced: CALC 1 Programmable Calculator has 9 ratings behind it against 1, so its average is the more settled of the two.

CALC 1 Programmable Calculator ships an update every 5 weeks, Operational Amplifiers Pro every 2 months. The most recent releases landed on September 27, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | CALC 1 Programmable Calculator | Operational Amplifiers Pro |
| --- | --- | --- |
| Price | $9.99 | **$4.99** |
| Rating | [4.6 (9 ratings)](https://appshunter.io/ios/app/calc-1-programmable-calculator/id1455298951/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/operational-amplifiers-pro/id6467253953/reviews)** |
| Number of ratings | **9** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 2 months |
| Monetization | Paid | Paid |
| Best chart rank | — | **#198** |
| Size | 8 MB | 14 MB |
| Requires iOS | **16.1** | 17.0 |
| Devices | iPhone, iPad | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [CalcFxC, LLC](https://appshunter.io/developer/395979596) | [ALG Software Lab](https://appshunter.io/developer/1650561236) |

## What reviewers say

### CALC 1 Programmable Calculator

[App page](https://appshunter.io/ios/app/calc-1-programmable-calculator/id1455298951)

Create custom calculators with AI-generated JavaScript functions for precise calculations and data visualization. Assign programs to keys and manage data efficiently. Offers multiple calculation modes and extensive documentation.

**Highlights:** AI-assisted JavaScript function creation, Customizable function calculators, Data visualization and plotting, Programmable calculator keys, List and data management, Multiple calculation modes (algebraic, RPN)

**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:** #198 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 CALC 1 Programmable Calculator free?

CALC 1 Programmable Calculator costs $9.99, 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, CALC 1 Programmable Calculator or Operational Amplifiers Pro?

Operational Amplifiers Pro is rated higher. CALC 1 Programmable Calculator averages 4.6 out of 5 from 9 ratings, while Operational Amplifiers Pro averages 5.0 from 1 ratings.

### Do CALC 1 Programmable Calculator or Operational Amplifiers Pro have ads?

Neither CALC 1 Programmable Calculator nor Operational Amplifiers Pro shows ads.

### Which is updated more often, CALC 1 Programmable Calculator or Operational Amplifiers Pro?

CALC 1 Programmable Calculator ships an update every 5 weeks, and Operational Amplifiers Pro every 2 months. Most recently, CALC 1 Programmable Calculator was updated on September 27, 2026 and Operational Amplifiers Pro on October 12, 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.*