# ONESTO SOLAR vs SKY TRACKER GPS

The clearest difference is iOS requirement: ONESTO SOLAR at 8.0 against SKY TRACKER GPS's 15.1. On price, update cadence, 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.

Both ship on a similar rhythm, roughly every 4 months. The most recent releases landed on October 27, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | ONESTO SOLAR | SKY TRACKER GPS |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | Every 4 months |
| Size | 59 MB | 26 MB |
| Requires iOS | **8.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Zhejiang Onesto Electric Co.,Ltd.](https://appshunter.io/developer/1705153314) | [Tamilarasan Kannan](https://appshunter.io/developer/1500116258) |

## What reviewers say

### ONESTO SOLAR

[App page](https://appshunter.io/ios/app/onesto-solar/id6443592685)

**Features:** macOS Compatibility

**In-app purchases:** none


### SKY TRACKER GPS

[App page](https://appshunter.io/ios/app/sky-tracker-gps/id6764756322)

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

**In-app purchases:** none


## Frequently asked questions

### Is ONESTO SOLAR free?

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

### Is SKY TRACKER GPS free?

SKY TRACKER GPS is free to download, with no in-app purchases.

### Do ONESTO SOLAR or SKY TRACKER GPS have ads?

Neither ONESTO SOLAR nor SKY TRACKER GPS shows ads.

### Which is updated more often, ONESTO SOLAR or SKY TRACKER GPS?

ONESTO SOLAR ships an update every 4 months, and SKY TRACKER GPS every 4 months. Most recently, ONESTO SOLAR was updated on October 27, 2026 and SKY TRACKER GPS on October 31, 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.*