# Idle Energy Empire vs Sardo

The clearest difference is in-app purchases: Sardo at none against Idle Energy Empire's 13. Sardo also leads on ads (none vs shown). Idle Energy Empire's advantage is iOS requirement (13.0 vs 26.0). On price and device support there is nothing between them.

Both are free to download. Idle Energy Empire sells 13 one-off in-app purchases. Sardo asks for nothing beyond the download.

## The numbers

| Metric | Idle Energy Empire | Sardo |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (144 ratings)](https://appshunter.io/ios/app/idle-energy-empire/id6737407950/reviews)** | — |
| Number of ratings | **144** | — |
| Positive reviews | 40.8% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 3 days | — |
| Monetization | Free with in-app purchases | — |
| Size | 273 MB | 7 MB |
| Requires iOS | **13.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [SOZAP](https://appshunter.io/developer/952456051) | [Immerse it LLC](https://appshunter.io/developer/1769686349) |

## What reviewers say

### Idle Energy Empire

[App page](https://appshunter.io/ios/app/idle-energy-empire/id6737407950)

Build and manage an energy empire in a post-apocalyptic wasteland. Harvest resources, produce batteries, upgrade machines, and defend your factory from zombie hordes. Expand your operations and connect the grid to survive and thrive.

**Highlights:** Resource management, Machine upgrades, Battery production, Electric train logistics, Grid connection gameplay, Zombie defense, Factory expansion

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

**In-app purchases (13)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Starter Pack | $0.99 | one-time |
| Few gems | $1.99 | one-time |
| Gem Pack Offer | $1.99 | one-time |
| Starter Pack | $2.99 | one-time |
| Factory 2 Offer | $4.99 | one-time |
| Factory 3 Offer | $4.99 | one-time |
| Gems pack 2 | $4.99 | one-time |
| Starter Pack | $4.99 | one-time |
| Factory 2 Offer | $6.99 | one-time |
| Factory 3 Offer | $6.99 | one-time |
| Gem pack 3 | $9.99 | one-time |
| Gem pack 5 | $19.99 | one-time |
| Gem pack 5 | $49.99 | one-time |

**What reviewers like**

- 👍 No ads
- 🚀 Smooth gameplay
- 💡 Promotes awareness about clean energy
- 👍 Relaxing yet challenging
- 💡 Competitive edge with energy trading

**What reviewers complain about**

- 🐛 Button to progress not working
- 🐛 Glitchy opening animation
- 🐛 Tasks not visible on small screens
- 🔋 Frequent ads interrupting flow

**Reported bugs**

- Button to upgrade factory not working
- Stuck at loading screen
- Unable to progress past first factory

**Requested features**

- Add more factories (4, 5, 6)
- Paid version to remove ads
- Ability to scroll or resize tasks


### Sardo

[App page](https://appshunter.io/ios/app/sardo-controller/id6760831847)

**In-app purchases:** none


## Frequently asked questions

### Is Idle Energy Empire free?

Idle Energy Empire is free to download, with in-app purchases available.

### Is Sardo free?

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

### Do Idle Energy Empire or Sardo have ads?

Idle Energy Empire shows ads; Sardo does not.

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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.*