# Subnet 64 vs Operational Amplifiers Pro

The clearest difference is rating: Operational Amplifiers Pro at 5.0 against Subnet 64's 4.0. Operational Amplifiers Pro also leads on chart position (#198 vs unranked) and price ($4.99 vs $6.99). On ratings volume, update cadence, ads and in-app purchases there is nothing between them.

Subnet 64 costs $6.99 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 4.0. 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 24, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Subnet 64 | Operational Amplifiers Pro |
| --- | --- | --- |
| Price | $6.99 | **$4.99** |
| Rating | [4.0 (2 ratings)](https://appshunter.io/ios/app/subnet-64/id1348388159/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/operational-amplifiers-pro/id6467253953/reviews)** |
| Number of ratings | **2** | 1 |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Paid | Paid |
| Best chart rank | — | **#198** |
| Size | 0 MB | 14 MB |
| Requires iOS | 18.0 | **17.0** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [SpaceNation Inc. CA](https://appshunter.io/developer/492209073) | [ALG Software Lab](https://appshunter.io/developer/1650561236) |

## What reviewers say

### Subnet 64

[App page](https://appshunter.io/ios/app/subnet-64/id1348388159)

This app simplifies IP networking for professionals and students. It calculates IPv4 and IPv6 subnets, converts between binary and decimal, and helps optimize network configurations. Ideal for troubleshooting, studying, or managing IP addresses.

**Highlights:** IPv4 & IPv6 subnet calculation, Binary to decimal conversion, Subnet mask, CIDR, and address range calculation, Cisco certification preparation, User-friendly interface, IP address management

**Features:** 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 Subnet 64 free?

Subnet 64 costs $6.99, 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, Subnet 64 or Operational Amplifiers Pro?

Operational Amplifiers Pro is rated higher. Subnet 64 averages 4.0 out of 5 from 2 ratings, while Operational Amplifiers Pro averages 5.0 from 1 ratings.

### Do Subnet 64 or Operational Amplifiers Pro have ads?

Neither Subnet 64 nor Operational Amplifiers Pro shows ads.

### Which is updated more often, Subnet 64 or Operational Amplifiers Pro?

Subnet 64 ships an update every 2 months, and Operational Amplifiers Pro every 2 months. Most recently, Subnet 64 was updated on September 24, 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.*