# Esolar vs AMPiiN

The clearest difference is in-app purchases: Esolar at none against AMPiiN's 1. Esolar also leads on iOS requirement (13.0 vs 15). AMPiiN's advantage is update cadence (every 3 days vs every 5 weeks). On price, ads and device support there is nothing between them.

Both are free to download. AMPiiN sells 1 in-app purchase, starting at $3.99 per month. Esolar asks for nothing beyond the download.

Esolar ships an update every 5 weeks, AMPiiN every 3 days. The most recent releases landed on October 24, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Esolar | AMPiiN |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 3 days** |
| Size | 77 MB | 47 MB |
| Requires iOS | **13.0** | 15 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [ESY Sunhome Co., Ltd](https://appshunter.io/developer/1670781987) | [AMPiiN](https://appshunter.io/developer/1844190638) |

## What reviewers say

### Esolar

[App page](https://appshunter.io/ios/app/esolar/id6449282620)

**Features:** macOS Compatibility

**In-app purchases:** none


### AMPiiN

[App page](https://appshunter.io/ios/app/ampiin/id6753648209)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AMPiiN - Peak Energy Load Balancing | $3.99 | per month |


## Frequently asked questions

### Is Esolar free?

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

### Is AMPiiN free?

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

### Do Esolar or AMPiiN have ads?

Neither Esolar nor AMPiiN shows ads.

### Which is updated more often, Esolar or AMPiiN?

Esolar ships an update every 5 weeks, and AMPiiN every 3 days. Most recently, Esolar was updated on October 24, 2026 and AMPiiN on October 14, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*