# Energy Efficiency Suite vs PIDTune

The clearest difference is price: PIDTune at $4.99 against Energy Efficiency Suite's $19.99. On update cadence, ads, in-app purchases and device support there is nothing between them.

Energy Efficiency Suite costs $19.99 and PIDTune $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Energy Efficiency Suite ships an update every 3 months, PIDTune every 4 months. The most recent releases landed on May 16, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Energy Efficiency Suite | PIDTune |
| --- | --- | --- |
| Price | $19.99 | **$4.99** |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/pidtune/id1045174726/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 4 months |
| Monetization | — | Paid |
| Size | 4 MB | 1 MB |
| Requires iOS | **14.3** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Muralidhar Shenoy](https://appshunter.io/developer/460148822) | [Richard H Street](https://appshunter.io/developer/954888336) |

## What reviewers say

### Energy Efficiency Suite

[App page](https://appshunter.io/ios/app/energy-efficiency-suite/id506662296)

**Features:** macOS Compatibility

**In-app purchases:** none


### PIDTune

[App page](https://appshunter.io/ios/app/pidtune/id1045174726)

This utility calculates PID tuning parameters using the IMC method for various process and controller types. It allows for direct input of process gain or variable changes, with adjustable tuning aggression via a slider.

**Highlights:** IMC method for PID tuning, Calculates Kc, Ti, Td, Supports FO, SO, and I process types, Handles Parallel and Series controller types, Adjustable tuning aggression slider, Input process gain or variable changes

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

**In-app purchases:** none


## Frequently asked questions

### Is Energy Efficiency Suite free?

Energy Efficiency Suite costs $19.99, with no in-app purchases.

### Is PIDTune free?

PIDTune costs $4.99, with no in-app purchases.

### Do Energy Efficiency Suite or PIDTune have ads?

Neither Energy Efficiency Suite nor PIDTune shows ads.

### Which is updated more often, Energy Efficiency Suite or PIDTune?

Energy Efficiency Suite ships an update every 3 months, and PIDTune every 4 months. Most recently, Energy Efficiency Suite was updated on May 16, 2026 and PIDTune on September 21, 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.*