# C Tuner vs Solar System Clock

The clearest difference is price: Solar System Clock at Free against C Tuner's $2.99. Solar System Clock also leads on update cadence (every 2 days vs every 28 months). C Tuner's advantage is iOS requirement (12.1 vs 16.6). On ads, in-app purchases and device support there is nothing between them.

Solar System Clock is free to download; C Tuner costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

C Tuner ships an update every 28 months, Solar System Clock every 2 days. The most recent releases landed on October 7, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | C Tuner | Solar System Clock |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/c-tuner/id1516461982/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 28 months | **Every 2 days** |
| Monetization | Paid | — |
| Size | 13 MB | 5 MB |
| Requires iOS | **12.1** | 16.6 |
| Devices | iPhone, iPod, Apple Watch | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Jongyun Park](https://appshunter.io/developer/382617671) | [Mateusz Andrzejczuk](https://appshunter.io/developer/1158375886) |

## What reviewers say

### C Tuner

[App page](https://appshunter.io/ios/app/c-tuner/id1516461982)

This application provides musicians with a simple and intuitive tuning tool. It features an analog-style display for precise tuning, a basic metronome, and visual feedback when playing an instrument. It also offers Apple Watch compatibility.

**Highlights:** Intuitive analog interface, Precise tuning display, Basic metronome function, Visual instrument feedback, Apple Watch support

**In-app purchases:** none


### Solar System Clock

[App page](https://appshunter.io/ios/app/solar-system-clock/id6746730661)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is C Tuner free?

C Tuner costs $2.99, with no in-app purchases.

### Is Solar System Clock free?

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

### Do C Tuner or Solar System Clock have ads?

Neither C Tuner nor Solar System Clock shows ads.

### Which is updated more often, C Tuner or Solar System Clock?

C Tuner ships an update every 28 months, and Solar System Clock every 2 days. Most recently, C Tuner was updated on October 7, 2026 and Solar System Clock on October 9, 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.*