# Fibonacci Clock by simple ver vs Trigonometry Portal AR

The clearest difference is review sentiment: Fibonacci Clock by simple ver at 71% against Trigonometry Portal AR's 0%. Fibonacci Clock by simple ver also leads on price (Free vs $1.99) and rating (4.0 vs 1.0). Trigonometry Portal AR's advantage is ads (none vs shown). On in-app purchases and iOS requirement there is nothing between them.

Fibonacci Clock by simple ver is free to download; Trigonometry Portal AR costs $1.99 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. That said, the two scores are not equally well evidenced: Fibonacci Clock by simple ver has 6 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 71% of Fibonacci Clock by simple ver's written reviews are positive against 0% of Trigonometry Portal AR's.

Fibonacci Clock by simple ver ships an update fortnightly, Trigonometry Portal AR every 37 months. The most recent releases landed on October 15, 2026 and June 1, 2026 respectively.

## The numbers

| Metric | Fibonacci Clock by simple ver | Trigonometry Portal AR |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | **[4.0 (6 ratings)](https://appshunter.io/ios/app/fibonacci-clock-by-simple-ver/id996123572/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/trigonometry-portal-ar/id1358343863/reviews) |
| Number of ratings | **6** | 1 |
| Positive reviews | **71.4% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Fortnightly** | Every 37 months |
| Monetization | **Ad-supported** | Paid |
| Size | 3 MB | 33 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | **iPhone, iPad, iPod** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [YUKI HAYANO](https://appshunter.io/developer/874819360) | [Ventura Educational Systems](https://appshunter.io/developer/371324172) |

## 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


### Trigonometry Portal AR

[App page](https://appshunter.io/ios/app/trigonometry-portal-ar/id1358343863)

Explore trigonometry concepts in an augmented reality environment. This app creates virtual rooms where you can interact with information about key terms and ideas from the high school curriculum. Walk around, tap on objects, and hear definitions read aloud.

**Highlights:** Augmented reality exploration, Virtual trigonometry rooms, Interactive information access, Siri-read aloud definitions, Scrollable term lists

**Features:** macOS Compatibility

**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 Trigonometry Portal AR free?

Trigonometry Portal AR costs $1.99, with no in-app purchases.

### Which has better reviews, Fibonacci Clock by simple ver or Trigonometry Portal AR?

Fibonacci Clock by simple ver is rated higher. Fibonacci Clock by simple ver averages 4.0 out of 5 from 6 ratings, while Trigonometry Portal AR averages 1.0 from 1 ratings.

### Do Fibonacci Clock by simple ver or Trigonometry Portal AR have ads?

Fibonacci Clock by simple ver shows ads; Trigonometry Portal AR does not.

### Which is updated more often, Fibonacci Clock by simple ver or Trigonometry Portal AR?

Fibonacci Clock by simple ver ships an update fortnightly, and Trigonometry Portal AR every 37 months. Most recently, Fibonacci Clock by simple ver was updated on October 15, 2026 and Trigonometry Portal AR on June 1, 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.*