# solar energy. vs PSCA E

The clearest difference is ads: solar energy. at none against PSCA E's shown. solar energy. also leads on iOS requirement (13.0 vs 16.4). PSCA E's advantage is update cadence (every 3 days vs every 3 months). On price, 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.

solar energy. ships an update every 3 months, PSCA E every 3 days. The most recent releases landed on October 28, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | solar energy. | PSCA E |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | **Every 3 days** |
| Size | 252 MB | 55 MB |
| Requires iOS | **13.0** | 16.4 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [祥梯 孟](https://appshunter.io/developer/1070155084) | [Muhammad Omar Farooq Shah](https://appshunter.io/developer/1891257569) |

## What reviewers say

### solar energy.

[App page](https://appshunter.io/ios/app/solar-energy/id6755375528)

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

**In-app purchases:** none


### PSCA E

[App page](https://appshunter.io/ios/app/psca-e-challan-check/id6785474479)

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

**In-app purchases:** none


## Frequently asked questions

### Is solar energy. free?

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

### Is PSCA E free?

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

### Do solar energy. or PSCA E have ads?

PSCA E shows ads; solar energy. does not.

### Which is updated more often, solar energy. or PSCA E?

solar energy. ships an update every 3 months, and PSCA E every 3 days. Most recently, solar energy. was updated on October 28, 2026 and PSCA E on October 12, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*