Fibonacci Clock by simple ver vs Trigonometry Portal AR
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Fibonacci Clock by simple ver
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.
- Fibonacci sequence time display
- Color-coded hour and minute
- Tap for hints
- Adjustable interval flick gestures
- Educational math concept
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This is a clock. but too difficult to read. hour = red + blue minute = (green + blue) * 5 if you tap , you find this hint. if you up or down flick, you can change an interval.
Trigonometry Portal AR
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.
- Augmented reality exploration
- Virtual trigonometry rooms
- Interactive information access
- Siri-read aloud definitions
- Scrollable term lists
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Create virtual rooms filled with information about key terms and concepts from the high school trigonometry curriculum. Explore trigonometry in a new way with the Trigonometry Portal AR. Use the camera view on your iPad to detect a flat surface and then tap the screen. Instantly a portal opens to a world filled with information about the terms and concepts that are part of the trigonometry curriculum. Walk around in the augmented reality trigonometry portal. Tap on the walls and other objects in the rooms to get more information and to hear Siri read aloud information about the selected item. Scroll through a list of terms related to the rooms, walls and objects in the portal. Trigonometry Portal AR creates virtual rooms that are approximately 4 meters by 7 meters. It is best used in a well-lit open space, perhaps in a school's auditorium or multi-purpose room.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Fibonacci Clock by simple ver | Trigonometry Portal AR |
|---|---|---|
| Price | Free — better | $1.99 |
| Rating | 4.0 (6 ratings) — better | 1.0 (1 ratings) |
| Positive reviews | 71.4% of reviews — better | 0.0% of reviews |
| Number of ratings | 6 — better | 1 |
| Update frequency | Fortnightly — better | Every 37 months |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Ad-supported — better | Paid |
| Devices | iPhone, iPad, iPod — better | iPad |
| Requires iOS | 12.0 | 12.0 |
| Further details — not scored | ||
| Size | 3 MB | 33 MB |
| Age rating | 4+ | 4+ |
| Developer | YUKI HAYANO | Ventura Educational Systems |
Customer experience
Fibonacci Clock by simple ver
Trigonometry Portal AR
In-app purchases
Fibonacci Clock by simple ver
No in-app purchases
Trigonometry Portal AR
No in-app purchases
Questions
Is Fibonacci Clock by simple ver free?
Is Trigonometry Portal AR free?
Which has better reviews, Fibonacci Clock by simple ver or Trigonometry Portal AR?
Do Fibonacci Clock by simple ver or Trigonometry Portal AR have ads?
Which is updated more often, Fibonacci Clock by simple ver or Trigonometry Portal AR?
Other comparisons
