# GreenSwitch by LS vs TRMaster

The clearest difference is in-app purchases: GreenSwitch by LS at none against TRMaster's 3. GreenSwitch by LS also leads on iOS requirement (12.0 vs 18.0). TRMaster's advantage is update cadence (monthly vs every 6 months). On price, ads and device support there is nothing between them.

Both are free to download. TRMaster sells 3 one-off in-app purchases. GreenSwitch by LS asks for nothing beyond the download.

GreenSwitch by LS ships an update every 6 months, TRMaster monthly. The most recent releases landed on September 17, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | GreenSwitch by LS | TRMaster |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 months | **Monthly** |
| Size | 19 MB | 24 MB |
| Requires iOS | **12.0** | 18.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [LIGHT SCIENTISTS GROUP](https://appshunter.io/developer/1687262009) | [Ronald Baks](https://appshunter.io/developer/1555952042) |

## What reviewers say

### GreenSwitch by LS

[App page](https://appshunter.io/ios/app/greenswitch-by-ls/id6448981770)

**Features:** macOS Compatibility

**In-app purchases:** none


### TRMaster

[App page](https://appshunter.io/ios/app/trmaster/id6743134819)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Small Donation Bronze-Member | $0.99 | one-time |
| Medium Donation Silver-Member | $2.99 | one-time |
| Large Donation Gold-Member | $3.99 | one-time |


## Frequently asked questions

### Is GreenSwitch by LS free?

GreenSwitch by LS is free to download, with no in-app purchases.

### Is TRMaster free?

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

### Do GreenSwitch by LS or TRMaster have ads?

Neither GreenSwitch by LS nor TRMaster shows ads.

### Which is updated more often, GreenSwitch by LS or TRMaster?

GreenSwitch by LS ships an update every 6 months, and TRMaster monthly. Most recently, GreenSwitch by LS was updated on September 17, 2026 and TRMaster on October 18, 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.*