# SOLAR ONE vs Solar.on

SOLAR ONE and Solar.on are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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 September 9, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | SOLAR ONE | Solar.on |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | Every 4 months |
| Size | 347 MB | 98 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Solar One](https://appshunter.io/developer/1649006606) | [鑫 俞](https://appshunter.io/developer/1714265333) |

## What reviewers say

### SOLAR ONE

[App page](https://appshunter.io/ios/app/solar-one/id6443745666)

**Features:** macOS Compatibility

**In-app purchases:** none


### Solar.on

[App page](https://appshunter.io/ios/app/solaron/id6479601705)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SOLAR ONE free?

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

### Is Solar.on free?

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

### Do SOLAR ONE or Solar.on have ads?

Neither SOLAR ONE nor Solar.on shows ads.

### Which is updated more often, SOLAR ONE or Solar.on?

SOLAR ONE ships an update every 4 months, and Solar.on every 4 months. Most recently, SOLAR ONE was updated on September 9, 2026 and Solar.on on September 22, 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.*