# ALPHA vs PHA022121

The clearest difference is update cadence: PHA022121 at monthly against ALPHA's every 4 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.

ALPHA ships an update every 4 months, PHA022121 monthly. The most recent releases landed on September 18, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | ALPHA | PHA022121 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Monthly** |
| Size | 18 MB | 81 MB |
| Requires iOS | 12.4 | **12.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 12+ | 12+ |
| Developer | [Snapiot](https://appshunter.io/developer/1457387084) | [ERT,INC](https://appshunter.io/developer/1160214546) |

## What reviewers say

### ALPHA

[App page](https://appshunter.io/ios/app/alpha-solar/id6474357614)

**Features:** macOS Compatibility

**In-app purchases:** none


### PHA022121

[App page](https://appshunter.io/ios/app/pha022121-c303/id6657974553)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ALPHA free?

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

### Is PHA022121 free?

PHA022121 is free to download, with no in-app purchases.

### Do ALPHA or PHA022121 have ads?

Neither ALPHA nor PHA022121 shows ads.

### Which is updated more often, ALPHA or PHA022121?

ALPHA ships an update every 4 months, and PHA022121 monthly. Most recently, ALPHA was updated on September 18, 2026 and PHA022121 on September 23, 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.*