# Lamp vs Solar Controller

The clearest difference is update cadence: Lamp at every 2 months against Solar Controller's every 9 months. On price, ads, in-app purchases and device support there is nothing between them.

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

Lamp ships an update every 2 months, Solar Controller every 9 months. The most recent releases landed on October 2, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | Lamp | Solar Controller |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 9 months |
| Size | 45 MB | 23 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [SRNE Solar Co.,Ltd](https://appshunter.io/developer/1479797802) | [TBB Power Co., Ltd](https://appshunter.io/developer/1089239531) |

## What reviewers say

### Lamp

[App page](https://appshunter.io/ios/app/lamp-control/id1530316331)

**Features:** macOS Compatibility

**In-app purchases:** none


### Solar Controller

[App page](https://appshunter.io/ios/app/solar-controller/id1665008052)

**In-app purchases:** none


## Frequently asked questions

### Is Lamp free?

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

### Is Solar Controller free?

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

### Do Lamp or Solar Controller have ads?

Neither Lamp nor Solar Controller shows ads.

### Which is updated more often, Lamp or Solar Controller?

Lamp ships an update every 2 months, and Solar Controller every 9 months. Most recently, Lamp was updated on October 2, 2026 and Solar Controller on September 25, 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.*