# Fibonacci Retracement/Extension Calculator vs Collatz Explorer

The clearest difference is price: Collatz Explorer at Free against Fibonacci Retracement/Extension Calculator's $1.99. Collatz Explorer also leads on review sentiment (100% vs 56%) and rating (4.6 vs 3.3). Fibonacci Retracement/Extension Calculator's advantage is iOS requirement (7.0 vs 18.6). On ratings volume, ads, in-app purchases and device support there is nothing between them.

Collatz Explorer is free to download; Fibonacci Retracement/Extension Calculator costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Collatz Explorer holds the better App Store score, 4.6 against 3.3. Both are backed by a comparable volume of ratings — 8 and 7 respectively. Written reviews point the same way: 56% of Fibonacci Retracement/Extension Calculator's written reviews are positive against 100% of Collatz Explorer's.

## The numbers

| Metric | Fibonacci Retracement/Extension Calculator | Collatz Explorer |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | [3.3 (8 ratings)](https://appshunter.io/ios/app/fibonacci-retracementextension-calculator/id773677356/reviews) | **[4.6 (7 ratings)](https://appshunter.io/ios/app/collatz-explorer/id6755121221/reviews)** |
| Number of ratings | **8** | 7 |
| Positive reviews | 55.6% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Monthly |
| Monetization | Paid | **Free** |
| Size | 1 MB | 1 MB |
| Requires iOS | **7.0** | 18.6 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Leo Tso](https://appshunter.io/developer/688348874) | [Berk Sucu](https://appshunter.io/developer/1852063488) |

## What reviewers say

### Fibonacci Retracement/Extension Calculator

[App page](https://appshunter.io/ios/app/fibonacci-retracementextension-calculator/id773677356)

This tool helps calculate Fibonacci retracement and extension levels for market prices. It assists in anticipating price movements and planning future trades based on these calculations.

**Highlights:** Calculate Fibonacci retracement levels, Calculate Fibonacci extension levels, Anticipate market price moves, Plan future trades, Simple and useful tool

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

**In-app purchases:** none


### Collatz Explorer

[App page](https://appshunter.io/ios/app/collatz-explorer/id6755121221)

Explore mathematical sequences with this app. It calculates the standard Collatz sequence for any number you enter and can also display sequences from an alternative 3x-1 function.

**Highlights:** Calculate Collatz sequences, Calculate 3x-1 function sequences, Input any number, Visualize sequences

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

**In-app purchases:** none


## Frequently asked questions

### Is Fibonacci Retracement/Extension Calculator free?

Fibonacci Retracement/Extension Calculator costs $1.99, with no in-app purchases.

### Is Collatz Explorer free?

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

### Which has better reviews, Fibonacci Retracement/Extension Calculator or Collatz Explorer?

Collatz Explorer is rated higher. Fibonacci Retracement/Extension Calculator averages 3.3 out of 5 from 8 ratings, while Collatz Explorer averages 4.6 from 7 ratings.

### Do Fibonacci Retracement/Extension Calculator or Collatz Explorer have ads?

Neither Fibonacci Retracement/Extension Calculator nor Collatz Explorer shows ads.

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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.*