# Fibonacci Clock by simple ver vs Flat Earth Sun, Moon Clock

The clearest difference is review sentiment: Fibonacci Clock by simple ver at 71% against Flat Earth Sun, Moon Clock's 0%. Fibonacci Clock by simple ver also leads on price (Free vs $2.99) and rating (4.0 vs 1.0). Flat Earth Sun, Moon Clock's advantage is ads (none vs shown) and chart position (#190 vs unranked). On in-app purchases, device support and iOS requirement there is nothing between them.

Fibonacci Clock by simple ver is free to download; Flat Earth Sun, Moon Clock costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Fibonacci Clock by simple ver holds the better App Store score, 4.0 against 1.0. Both are backed by a comparable volume of ratings — 6 and 2 respectively. Written reviews point the same way: 71% of Fibonacci Clock by simple ver's written reviews are positive against 0% of Flat Earth Sun, Moon Clock's.

Fibonacci Clock by simple ver ships an update fortnightly, Flat Earth Sun, Moon Clock monthly. The most recent releases landed on October 15, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Fibonacci Clock by simple ver | Flat Earth Sun, Moon Clock |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | **[4.0 (6 ratings)](https://appshunter.io/ios/app/fibonacci-clock-by-simple-ver/id996123572/reviews)** | [1.0 (2 ratings)](https://appshunter.io/ios/app/flat-earth-sun-moon-clock/id1539327599/reviews) |
| Number of ratings | **6** | 2 |
| Positive reviews | **71.4% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Fortnightly** | Monthly |
| Monetization | **Ad-supported** | Paid |
| Best chart rank | — | **#190** |
| Size | 3 MB | 58 MB |
| Requires iOS | 12.0 | **11.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [YUKI HAYANO](https://appshunter.io/developer/874819360) | [rohit guleria](https://appshunter.io/developer/1450717751) |

## What reviewers say

### Fibonacci Clock by simple ver

[App page](https://appshunter.io/ios/app/fibonacci-clock-by-simple-ver/id996123572)

This app displays time using a unique color-coded system based on the Fibonacci sequence. It's designed to be a challenging yet educational way to tell time, with hints available and adjustable intervals.

**Highlights:** Fibonacci sequence time display, Color-coded hour and minute, Tap for hints, Adjustable interval flick gestures, Educational math concept

**Features:** macOS Compatibility

**In-app purchases:** none


### Flat Earth Sun, Moon Clock

[App page](https://appshunter.io/ios/app/flat-earth-sun-moon-clock/id1539327599)

**Currently charting:** #190 Top Paid · Education (US App Store)

This app displays real-time positions of the sun and moon, including sunrise, sunset, and twilight times. It offers customizable clock styles, backgrounds, and time-lapse functions to visualize celestial movements and moon phases.

**Highlights:** Real-time sun and moon positions, Sunrise, sunset, and twilight times, Moon phase visualization, Customizable clock styles and backgrounds, Hourly and daily time-lapse function, Weather information

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

**In-app purchases:** none


## Frequently asked questions

### Is Fibonacci Clock by simple ver free?

Fibonacci Clock by simple ver is free to download, with no in-app purchases.

### Is Flat Earth Sun, Moon Clock free?

Flat Earth Sun, Moon Clock costs $2.99, with no in-app purchases.

### Which has better reviews, Fibonacci Clock by simple ver or Flat Earth Sun, Moon Clock?

Fibonacci Clock by simple ver is rated higher. Fibonacci Clock by simple ver averages 4.0 out of 5 from 6 ratings, while Flat Earth Sun, Moon Clock averages 1.0 from 2 ratings.

### Do Fibonacci Clock by simple ver or Flat Earth Sun, Moon Clock have ads?

Fibonacci Clock by simple ver shows ads; Flat Earth Sun, Moon Clock does not.

### Which is updated more often, Fibonacci Clock by simple ver or Flat Earth Sun, Moon Clock?

Fibonacci Clock by simple ver ships an update fortnightly, and Flat Earth Sun, Moon Clock monthly. Most recently, Fibonacci Clock by simple ver was updated on October 15, 2026 and Flat Earth Sun, Moon Clock on October 25, 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.*