# iSungo vs Sumray

The clearest difference is iOS requirement: iSungo at 12.0 against Sumray's 15.6. 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.

iSungo ships an update every 5 months, Sumray every 3 months. The most recent releases landed on September 8, 2026 and June 1, 2026 respectively.

## The numbers

| Metric | iSungo | Sumray |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 3 months** |
| Size | 54 MB | 39 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Shanghai Raymon IoT Technology Co., Ltd.](https://appshunter.io/developer/1649162918) | [Sumray Digital Energy Technology Company](https://appshunter.io/developer/1775348744) |

## What reviewers say

### iSungo

[App page](https://appshunter.io/ios/app/isungo/id6475705679)

**Features:** macOS Compatibility

**In-app purchases:** none


### Sumray

[App page](https://appshunter.io/ios/app/sumray/id6737216413)

**In-app purchases:** none


## Frequently asked questions

### Is iSungo free?

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

### Is Sumray free?

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

### Do iSungo or Sumray have ads?

Neither iSungo nor Sumray shows ads.

### Which is updated more often, iSungo or Sumray?

iSungo ships an update every 5 months, and Sumray every 3 months. Most recently, iSungo was updated on September 8, 2026 and Sumray on June 1, 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.*