# iSolar vs Fire Check

The clearest difference is price: Fire Check at Free against iSolar's $0.99. Fire Check also leads on ads (none vs shown) and iOS requirement (16.6 vs 18.0). On update cadence, in-app purchases and device support there is nothing between them.

Fire Check is free to download; iSolar costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

iSolar ships an update fortnightly, Fire Check every 3 weeks. The most recent releases landed on September 11, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | iSolar | Fire Check |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Fortnightly** | Every 3 weeks |
| Size | 9 MB | 61 MB |
| Requires iOS | 18.0 | **16.6** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Alain Lima](https://appshunter.io/developer/789421888) | [Riccardo Lapi](https://appshunter.io/developer/1535659356) |

## What reviewers say

### iSolar

[App page](https://appshunter.io/ios/app/isolar-install-solar-panel/id807174941)

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

**In-app purchases:** none


### Fire Check

[App page](https://appshunter.io/ios/app/fire-check/id6444737287)

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

**In-app purchases:** none


## Frequently asked questions

### Is iSolar free?

iSolar costs $0.99, with no in-app purchases.

### Is Fire Check free?

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

### Do iSolar or Fire Check have ads?

iSolar shows ads; Fire Check does not.

### Which is updated more often, iSolar or Fire Check?

iSolar ships an update fortnightly, and Fire Check every 3 weeks. Most recently, iSolar was updated on September 11, 2026 and Fire Check on September 20, 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.*