# SpiroDesigner vs HoroClock

The clearest difference is update cadence: HoroClock at every 10 days against SpiroDesigner's every 5 months. HoroClock also leads on chart position (#195 vs unranked). On price, review sentiment, ads and in-app purchases there is nothing between them.

SpiroDesigner costs $2.99 and HoroClock $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

SpiroDesigner ships an update every 5 months, HoroClock every 10 days. The most recent releases landed on September 10, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | SpiroDesigner | HoroClock |
| --- | --- | --- |
| Price | $2.99 | $2.99 |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/spirodesigner-spirograph-app/id595177167/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 10 days** |
| Monetization | Paid | Paid |
| Best chart rank | — | **#195** |
| Size | 19 MB | 15 MB |
| Requires iOS | 16.0 | 16.0 |
| Devices | iPad | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Masahiko Fukuyama](https://appshunter.io/developer/595177290) | [charapla](https://appshunter.io/developer/765338912) |

## What reviewers say

### SpiroDesigner

[App page](https://appshunter.io/ios/app/spirodesigner-spirograph-app/id595177167)

Create intricate geometric patterns and mathematical curves with this digital spirograph tool. Customize circles, lines, and colors to design unique artwork. Features include saving, exporting, and automatic drawing modes.

**Highlights:** Draw epicycloids and hypotrochoids, Customize circle radii and line thickness, Select and edit colors, Save and export drawings as PNG, Automatic drawing mode, Randomize settings, Tutorial videos

**Features:** macOS Compatibility

**In-app purchases:** none


### HoroClock

[App page](https://appshunter.io/ios/app/horoclock/id6784956088)

**Currently charting:** #195 Top Paid · Entertainment (US App Store)

This app displays the real-time positions of planets and stars on a clock face, blending astronomy and astrology. It features a dynamic starfield, accurate astrological calculations, and a customizable local sky view.

**Highlights:** Real-time planetary positions, Dynamic starfield with spectral colors, Tropical and Sidereal zodiac options, Multiple house systems, Local sky calculations (Ascendant, Midheaven), Customizable planet and star display

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

**In-app purchases:** none


## Frequently asked questions

### Is SpiroDesigner free?

SpiroDesigner costs $2.99, with no in-app purchases.

### Is HoroClock free?

HoroClock costs $2.99, with no in-app purchases.

### Do SpiroDesigner or HoroClock have ads?

Neither SpiroDesigner nor HoroClock shows ads.

### Which is updated more often, SpiroDesigner or HoroClock?

SpiroDesigner ships an update every 5 months, and HoroClock every 10 days. Most recently, SpiroDesigner was updated on September 10, 2026 and HoroClock on September 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.*