# Attenuator vs Plottron

The clearest difference is in-app purchases: Plottron at none against Attenuator's 1. Plottron also leads on device support (3 vs 1) and iOS requirement (15.0 vs 17.6). Attenuator's advantage is rating (5.0 vs 4.8). On price, review sentiment, ratings volume and update cadence there is nothing between them.

Both are free to download. Attenuator sells 1 one-off in-app purchase. Plottron asks for nothing beyond the download.

Attenuator holds the better App Store score, 5.0 against 4.8. Both are backed by a comparable volume of ratings — 8 and 12 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Attenuator ships an update every 7 months, Plottron every 5 months. The most recent releases landed on July 29, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | Attenuator | Plottron |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (8 ratings)](https://appshunter.io/ios/app/attenuator/id367216554/reviews)** | [4.8 (12 ratings)](https://appshunter.io/ios/app/plottron/id1037723649/reviews) |
| Number of ratings | 8 | **12** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 5 months** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 1 MB | 2 MB |
| Requires iOS | 17.6 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Tim E. Burrow](https://appshunter.io/developer/367216557) | [Billy Lin](https://appshunter.io/developer/1037723648) |

## What reviewers say

### Attenuator

[App page](https://appshunter.io/ios/app/attenuator/id367216554)

Calculate output voltage, power, and attenuation based on input values and dB of attenuation. Features NMR-specific calculations for pulses and measures local magnetic fields and barometric pressure.

**Highlights:** Calculate output voltage and power, Specify input voltage (Vpp or Vrms), Calculate attenuation in dB, NMR pulse calculations, Measure local magnetic field, Display barometric pressure

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove all ads | $1.99 | one-time |


### Plottron

[App page](https://appshunter.io/ios/app/plottron/id1037723649)

This application offers advanced 2D and 3D graphing capabilities for various function types, alongside a comprehensive scientific calculator. It supports implicit graphing, complex number visualization, and symbolic differentiation. The calculator includes user-defined variables, live evaluation, and probability density functions.

**Highlights:** 2D and 3D graphing, Implicit graphing, Complex number visualization, Symbolic differentiation, User-defined variables and functions, Live evaluation, Calculation history

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

**In-app purchases:** none


## Frequently asked questions

### Is Attenuator free?

Attenuator is free to download, with in-app purchases available.

### Is Plottron free?

Plottron is free to download, with no in-app purchases.

### Which has better reviews, Attenuator or Plottron?

Attenuator is rated higher. Attenuator averages 5.0 out of 5 from 8 ratings, while Plottron averages 4.8 from 12 ratings.

### Do Attenuator or Plottron have ads?

Neither Attenuator nor Plottron shows ads.

### Which is updated more often, Attenuator or Plottron?

Attenuator ships an update every 7 months, and Plottron every 5 months. Most recently, Attenuator was updated on July 29, 2026 and Plottron on September 14, 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.*