# Plain CALENDAR_ vs SungrowEye

The clearest difference is price: Plain CALENDAR_ at Free against SungrowEye's $7.99. Plain CALENDAR_ also leads on update cadence (every 2 days vs weekly) and iOS requirement (16.0 vs 18.0). On ads, in-app purchases and device support there is nothing between them.

Plain CALENDAR_ is free to download; SungrowEye costs $7.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Plain CALENDAR_ ships an update every 2 days, SungrowEye weekly. Both last shipped on October 27, 2026.

## The numbers

| Metric | Plain CALENDAR_ | SungrowEye |
| --- | --- | --- |
| Price | **Free** | $7.99 |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 days** | Weekly |
| Monetization | — | Paid |
| Size | 107 MB | 33 MB |
| Requires iOS | **16.0** | 18.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Hyobeom Han](https://appshunter.io/developer/1739693153) | [Appnify GbR](https://appshunter.io/developer/1778006935) |

## What reviewers say

### Plain CALENDAR_

[App page](https://appshunter.io/ios/app/plain-calendar/id6523414947)

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

**In-app purchases:** none


### SungrowEye

[App page](https://appshunter.io/ios/app/sungroweye/id6737238459)

Monitor your Sungrow solar system in real-time. This app retrieves data directly from your system's register, with or without an internet connection. It's designed for SH10RT models but aims for compatibility with most Sungrow solar systems.

**Highlights:** Real-time data monitoring, Direct register access, Internet or offline operation, Broad Sungrow system compatibility, Specifically for SH10RT models

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Plain CALENDAR_ free?

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

### Is SungrowEye free?

SungrowEye costs $7.99, with no in-app purchases.

### Do Plain CALENDAR_ or SungrowEye have ads?

Neither Plain CALENDAR_ nor SungrowEye shows ads.

### Which is updated more often, Plain CALENDAR_ or SungrowEye?

Plain CALENDAR_ ships an update every 2 days, and SungrowEye weekly. Most recently, Plain CALENDAR_ was updated on October 27, 2026 and SungrowEye on October 27, 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.*