# Pictographs vs Operational Amplifiers Pro

The clearest difference is price: Pictographs at Free against Operational Amplifiers Pro's $4.99. Pictographs also leads on update cadence (every 3 weeks vs every 2 months) and ratings volume (3 vs 1). Operational Amplifiers Pro's advantage is rating (5.0 vs 2.0) and chart position (#174 vs unranked). On ads, in-app purchases and device support there is nothing between them.

Pictographs 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 2.0. Both are backed by a comparable volume of ratings — 3 and 1 respectively.

Pictographs ships an update every 3 weeks, Operational Amplifiers Pro every 2 months. The most recent releases landed on November 2, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | Pictographs | Operational Amplifiers Pro |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| Rating | [2.0 (3 ratings)](https://appshunter.io/ios/app/pictographs/id1144236311/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/operational-amplifiers-pro/id6467253953/reviews)** |
| Number of ratings | **3** | 1 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Monetization | **Free** | Paid |
| Best chart rank | — | **#174** |
| Size | 15 MB | 14 MB |
| Requires iOS | **11.0** | 17.0 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [David Miller](https://appshunter.io/developer/1144227850) | [ALG Software Lab](https://appshunter.io/developer/1650561236) |

## What reviewers say

### Pictographs

[App page](https://appshunter.io/ios/app/pictographs/id1144236311)

Easily insert a wide variety of special characters and symbols on your iPhone and iPad. Access symbols like infinity, copyright, and trademark directly from your keyboard.

**Highlights:** Insert odd characters, Access special symbols, Keyboard for iPhone and iPad, Wide variety of symbols

**In-app purchases:** none


### Operational Amplifiers Pro

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

**Currently charting:** #174 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 Pictographs free?

Pictographs 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, Pictographs or Operational Amplifiers Pro?

Operational Amplifiers Pro is rated higher. Pictographs averages 2.0 out of 5 from 3 ratings, while Operational Amplifiers Pro averages 5.0 from 1 ratings.

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

Neither Pictographs nor Operational Amplifiers Pro shows ads.

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

Pictographs ships an update every 3 weeks, and Operational Amplifiers Pro every 2 months. Most recently, Pictographs 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.*