# SunGraph vs Jazz Clock

The clearest difference is update cadence: Jazz Clock at every 9 days against SunGraph's every 4 months. SunGraph's advantage is iOS requirement (13.0 vs 15.1). 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.

SunGraph ships an update every 4 months, Jazz Clock every 9 days. The most recent releases landed on October 23, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | SunGraph | Jazz Clock |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.2 (14 ratings)](https://appshunter.io/ios/app/sungraph/id321534034/reviews)** | — |
| Number of ratings | **14** | — |
| Positive reviews | 56.8% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 9 days** |
| Monetization | Free | — |
| Size | 11 MB | 23 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Tremont Air, LLC](https://appshunter.io/developer/309321587) | [Timothy Smith](https://appshunter.io/developer/1865730707) |

## What reviewers say

### SunGraph

[App page](https://appshunter.io/ios/app/sungraph/id321534034)

Calculate sunrise and sunset times for any location globally and any day of the year. Explore earliest/latest times, the equation of time, and sun inclination. Visualize the sun's position on Earth.

**Highlights:** Sunrise and sunset times worldwide, Earliest and latest sunrise/sunset, Equation of time display, Sun inclination at transit, World view of sun's position, User location database

**In-app purchases:** none


### Jazz Clock

[App page](https://appshunter.io/ios/app/jazz-clock/id6757275161)

**In-app purchases:** none


## Frequently asked questions

### Is SunGraph free?

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

### Is Jazz Clock free?

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

### Do SunGraph or Jazz Clock have ads?

Neither SunGraph nor Jazz Clock shows ads.

### Which is updated more often, SunGraph or Jazz Clock?

SunGraph ships an update every 4 months, and Jazz Clock every 9 days. Most recently, SunGraph was updated on October 23, 2026 and Jazz Clock on October 14, 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.*