# Plants Diseases Identifier vs Operational Amplifiers Pro

The clearest difference is rating: Operational Amplifiers Pro at 5.0 against Plants Diseases Identifier's 2.8. Plants Diseases Identifier's advantage is ratings volume (9 vs 1) and price ($2.99 vs $4.99). On update cadence, ads, in-app purchases and monetization model there is nothing between them.

Plants Diseases Identifier costs $2.99 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 2.8. That said, the two scores are not equally well evidenced: Plants Diseases Identifier has 9 ratings behind it against 1, so its average is the more settled of the two.

Both ship on a similar rhythm, roughly every 2 months. Both last shipped on November 3, 2026.

## The numbers

| Metric | Plants Diseases Identifier | Operational Amplifiers Pro |
| --- | --- | --- |
| Price | **$2.99** | $4.99 |
| Rating | [2.8 (9 ratings)](https://appshunter.io/ios/app/plants-diseases-identifier/id1537766094/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/operational-amplifiers-pro/id6467253953/reviews)** |
| Number of ratings | **9** | 1 |
| Positive reviews | 30.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Paid | Paid |
| Size | 28 MB | 14 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | +4 | 4+ |
| Developer | [Jose Bello](https://appshunter.io/developer/1013437387) | [ALG Software Lab](https://appshunter.io/developer/1650561236) |

## What reviewers say

### Plants Diseases Identifier

[App page](https://appshunter.io/ios/app/plants-diseases-identifier/id1537766094)

Identify plant diseases by taking a photo of a leaf. This tool helps farmers and gardeners detect infections early to protect crops and increase yields. It utilizes advanced computer vision and a large image database for accurate diagnosis.

**Highlights:** Diagnose plant diseases from leaf photos, Supports a wide variety of crops and diseases, Utilizes computer vision and AI, Large image database for accuracy, Option to report unrecognized images, Helps reduce crop yield losses

**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 Plants Diseases Identifier free?

Plants Diseases Identifier 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, Plants Diseases Identifier or Operational Amplifiers Pro?

Operational Amplifiers Pro is rated higher. Plants Diseases Identifier averages 2.8 out of 5 from 9 ratings, while Operational Amplifiers Pro averages 5.0 from 1 ratings.

### Do Plants Diseases Identifier or Operational Amplifiers Pro have ads?

Neither Plants Diseases Identifier nor Operational Amplifiers Pro shows ads.

### Which is updated more often, Plants Diseases Identifier or Operational Amplifiers Pro?

Plants Diseases Identifier ships an update every 2 months, and Operational Amplifiers Pro every 2 months. Most recently, Plants Diseases Identifier was updated on November 3, 2026 and Operational Amplifiers Pro on November 3, 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.*