# Solar_GPS vs Doorstep Technology

The clearest difference is iOS requirement: Solar_GPS at 9.0 against Doorstep Technology's 16.4. 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 fortnightly. The most recent releases landed on September 24, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Solar_GPS | Doorstep Technology |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | Fortnightly |
| Size | 18 MB | 69 MB |
| Requires iOS | **9.0** | 16.4 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [维刚 王](https://appshunter.io/developer/913823126) | [Kakada Ly](https://appshunter.io/developer/1499552919) |

## What reviewers say

### Solar_GPS

[App page](https://appshunter.io/ios/app/solar-gps/id1445538841)

**Features:** macOS Compatibility

**In-app purchases:** none


### Doorstep Technology

[App page](https://appshunter.io/ios/app/doorstep-technology/id6760248714)

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

**In-app purchases:** none


## Frequently asked questions

### Is Solar_GPS free?

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

### Is Doorstep Technology free?

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

### Do Solar_GPS or Doorstep Technology have ads?

Neither Solar_GPS nor Doorstep Technology shows ads.

### Which is updated more often, Solar_GPS or Doorstep Technology?

Solar_GPS ships an update fortnightly, and Doorstep Technology fortnightly. Most recently, Solar_GPS was updated on September 24, 2026 and Doorstep Technology on October 13, 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.*