# Energy Efficiency Suite vs E3 Drying

The clearest difference is price: E3 Drying at Free against Energy Efficiency Suite's $19.99. E3 Drying also leads on update cadence (every 3 weeks vs every 3 months) and iOS requirement (12.0 vs 14.3). On ads, in-app purchases and device support there is nothing between them.

E3 Drying is free to download; Energy Efficiency Suite costs $19.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Energy Efficiency Suite ships an update every 3 months, E3 Drying every 3 weeks. The most recent releases landed on May 16, 2026 and June 4, 2026 respectively.

## The numbers

| Metric | Energy Efficiency Suite | E3 Drying |
| --- | --- | --- |
| Price | $19.99 | **Free** |
| Rating | — | **[5.0 (10 ratings)](https://appshunter.io/ios/app/e3-drying/id1513574356/reviews)** |
| Number of ratings | — | **10** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Monetization | — | Free |
| Size | 4 MB | 68 MB |
| Requires iOS | 14.3 | **12.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Muralidhar Shenoy](https://appshunter.io/developer/460148822) | [Scott Dewald](https://appshunter.io/developer/1513574355) |

## What reviewers say

### Energy Efficiency Suite

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

**Features:** macOS Compatibility

**In-app purchases:** none


### E3 Drying

[App page](https://appshunter.io/ios/app/e3-drying/id1513574356)

This utility app provides water mitigation professionals with proprietary algorithms and metrics to precisely control drying chambers. It introduces a patent-pending E3 metric to evaluate evaporation ability and set daily targets, allowing for optimized equipment selection and performance comparison.

**Highlights:** Proprietary algorithms for drying chamber control, Patent-pending E3 metric for evaporation evaluation, Daily E3 targets for various equipment and conditions, Equipment ranking and comparison, Control regardless of chamber size or outside conditions

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Energy Efficiency Suite free?

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

### Is E3 Drying free?

E3 Drying is free to download, with no in-app purchases.

### Do Energy Efficiency Suite or E3 Drying have ads?

Neither Energy Efficiency Suite nor E3 Drying shows ads.

### Which is updated more often, Energy Efficiency Suite or E3 Drying?

Energy Efficiency Suite ships an update every 3 months, and E3 Drying every 3 weeks. Most recently, Energy Efficiency Suite was updated on May 16, 2026 and E3 Drying on June 4, 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.*