# Sunline vs 800 4GPS

The clearest difference is update cadence: Sunline at every 4 months against 800 4GPS's every 28 months. On price, ads, 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.

Sunline ships an update every 4 months, 800 4GPS every 28 months. The most recent releases landed on October 24, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Sunline | 800 4GPS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.8 (6 ratings)](https://appshunter.io/ios/app/sunline/id1494807667/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 28 months |
| Monetization | Free | — |
| Size | 7 MB | 112 MB |
| Requires iOS | 11.1 | **11.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Drift Innovation Ltd](https://appshunter.io/developer/579007701) | [VoltSwitch Technologies INC](https://appshunter.io/developer/1498164935) |

## What reviewers say

### Sunline

[App page](https://appshunter.io/ios/app/sunline/id1494807667)

This device combines inverter, solar charger, and battery charger functions for portable, uninterruptible power. Its LCD display allows easy configuration of charging current, power source priority, and input voltage.

**Highlights:** Multi-function inverter/charger, Solar charger capability, Battery charger capability, Uninterruptible power support, Comprehensive LCD display, User-configurable settings

**Features:** macOS Compatibility

**In-app purchases:** none


### 800 4GPS

[App page](https://appshunter.io/ios/app/800-4gps/id1563378834)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Sunline free?

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

### Is 800 4GPS free?

800 4GPS is free to download, with no in-app purchases.

### Do Sunline or 800 4GPS have ads?

Neither Sunline nor 800 4GPS shows ads.

### Which is updated more often, Sunline or 800 4GPS?

Sunline ships an update every 4 months, and 800 4GPS every 28 months. Most recently, Sunline was updated on October 24, 2026 and 800 4GPS on October 27, 2026.

---

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