# DeltaSolar vs ESTAR PRO

The clearest difference is iOS requirement: DeltaSolar at 11.0 against ESTAR PRO's 14.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

DeltaSolar ships an update every 2 months, ESTAR PRO every 6 weeks. The most recent releases landed on October 15, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | DeltaSolar | ESTAR PRO |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 6 weeks** |
| Monetization | Free | — |
| Size | 136 MB | 51 MB |
| Requires iOS | **11.0** | 14.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Delta Electronics, Inc.](https://appshunter.io/developer/386896582) | [JUAN WANG](https://appshunter.io/developer/1650350517) |

## What reviewers say

### DeltaSolar

[App page](https://appshunter.io/ios/app/deltasolar/id1570742979)

Monitor your solar energy system's performance remotely or onsite. Track energy production, consumption, and export, with historical data for analysis. View grid and solar power voltage, frequency, and amps for comprehensive system insights.

**Highlights:** Remote Wi-Fi access, Direct onsite connection, Energy status and analysis, Production, consumption, export data, Historical performance data, Grid and solar voltage/frequency monitoring

**Features:** macOS Compatibility

**In-app purchases:** none


### ESTAR PRO

[App page](https://appshunter.io/ios/app/estar-pro/id6443893957)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is DeltaSolar free?

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

### Is ESTAR PRO free?

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

### Do DeltaSolar or ESTAR PRO have ads?

Neither DeltaSolar nor ESTAR PRO shows ads.

### Which is updated more often, DeltaSolar or ESTAR PRO?

DeltaSolar ships an update every 2 months, and ESTAR PRO every 6 weeks. Most recently, DeltaSolar was updated on October 15, 2026 and ESTAR PRO on October 19, 2026.

---

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