# Solar Book vs ITEL App

The clearest difference is update cadence: ITEL App at every 3 days against Solar Book's every 14 months. Solar Book's advantage is device support (3 vs 1) and iOS requirement (12.0 vs 16.4). On price, ads 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.

Solar Book ships an update every 14 months, ITEL App every 3 days. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Solar Book | ITEL App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (4 ratings)](https://appshunter.io/ios/app/solar-book/id1078873201/reviews)** | — |
| Number of ratings | **4** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 14 months | **Every 3 days** |
| Monetization | Free | — |
| Size | 5 MB | 37 MB |
| Requires iOS | **12.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Vixen Co.,Ltd.](https://appshunter.io/developer/536188843) | [Clara Anggelieca](https://appshunter.io/developer/1843792124) |

## What reviewers say

### Solar Book

[App page](https://appshunter.io/ios/app/solar-book/id1078873201)

This app provides detailed information about solar eclipses, including timings for different phases based on your location. It allows you to view sequential images and star charts for planning and observation.

**Highlights:** Solar eclipse phase timing, Location-based eclipse calculations, Sequential eclipse image display, Star chart visualization, Past and future eclipse planning

**In-app purchases:** none


### ITEL App

[App page](https://appshunter.io/ios/app/itel-app/id6753581536)

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

**In-app purchases:** none


## Frequently asked questions

### Is Solar Book free?

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

### Is ITEL App free?

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

### Do Solar Book or ITEL App have ads?

Neither Solar Book nor ITEL App shows ads.

### Which is updated more often, Solar Book or ITEL App?

Solar Book ships an update every 14 months, and ITEL App every 3 days. Most recently, Solar Book was updated on October 24, 2026 and ITEL App on October 25, 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.*