# Energy Efficiency Calculator vs Sage

The clearest difference is in-app purchases: Energy Efficiency Calculator at none against Sage's 3. Energy Efficiency Calculator also leads on device support and iOS requirement (13.0 vs 17.0). Sage's advantage is update cadence (every 2 months vs every 43 months). On price there is nothing between them.

Both are free to download. Sage sells 3 in-app purchases, starting at $2.99 per 7 days. Energy Efficiency Calculator asks for nothing beyond the download.

Energy Efficiency Calculator ships an update every 43 months, Sage every 2 months. The most recent releases landed on October 7, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Energy Efficiency Calculator | Sage |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/energy-efficiency-calculator/id1645902512/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | No | — |
| Update frequency | Every 43 months | **Every 2 months** |
| Monetization | Free | — |
| Size | 11 MB | 17 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | — |
| Age rating | 4+ | 4+ |
| Developer | [Georgia Power Company](https://appshunter.io/developer/905338465) | [Selin Gursoy Yucel](https://appshunter.io/developer/1871760676) |

## What reviewers say

### Energy Efficiency Calculator

[App page](https://appshunter.io/ios/app/energy-efficiency-calculator/id1645902512)

An interactive tool designed to teach users about energy efficiency through engaging games and activities. Users can estimate energy costs for home appliances and learn how behavior changes can impact electricity usage and savings. It's geared towards students, parents, and teachers.

**Highlights:** Estimate appliance energy use and cost, Interactive learning games, Behavior modification impact on savings, STEM learning and career exploration, Aligned with educational standards

**Features:** macOS Compatibility

**In-app purchases:** none


### Sage

[App page](https://appshunter.io/ios/app/sage-study-coach/id6760980821)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $2.99 | per 7 days |
| Monthly | $4.99 | per month |
| Yearly | $24.99 | per year |


## Frequently asked questions

### Is Energy Efficiency Calculator free?

Energy Efficiency Calculator is free to download, with no in-app purchases.

### Is Sage free?

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

### Which is updated more often, Energy Efficiency Calculator or Sage?

Energy Efficiency Calculator ships an update every 43 months, and Sage every 2 months. Most recently, Energy Efficiency Calculator was updated on October 7, 2026 and Sage on October 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.*