# Solartzi vs GREEMS

The clearest difference is update cadence: GREEMS at every 4 weeks against Solartzi's every 11 months. GREEMS also leads on device support. Solartzi's advantage is iOS requirement (13.0 vs 15.6). On price 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.

Solartzi ships an update every 11 months, GREEMS every 4 weeks. The most recent releases landed on October 6, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Solartzi | GREEMS |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | — | No |
| Update frequency | Every 11 months | **Every 4 weeks** |
| Size | 54 MB | 83 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | — | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Evlink Group LTD](https://appshunter.io/developer/1664088655) | [Oren Gozlan](https://appshunter.io/developer/1492309265) |

## What reviewers say

### Solartzi

[App page](https://appshunter.io/ios/app/solartzi/id1672736391)

**In-app purchases:** none


### GREEMS

[App page](https://appshunter.io/ios/app/greems/id6474761321)

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

**In-app purchases:** none


## Frequently asked questions

### Is Solartzi free?

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

### Is GREEMS free?

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

### Which is updated more often, Solartzi or GREEMS?

Solartzi ships an update every 11 months, and GREEMS every 4 weeks. Most recently, Solartzi was updated on October 6, 2026 and GREEMS on October 10, 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.*