# Goldbach's Conjecture Math vs Collatz Explorer

The clearest difference is update cadence: Goldbach's Conjecture Math at weekly against Collatz Explorer's monthly. Collatz Explorer's advantage is iOS requirement (18.6 vs 26.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Goldbach's Conjecture Math ships an update weekly, Collatz Explorer monthly. The most recent releases landed on October 8, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | Goldbach's Conjecture Math | Collatz Explorer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.6 (7 ratings)](https://appshunter.io/ios/app/collatz-explorer/id6755121221/reviews)** |
| Number of ratings | — | **7** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Weekly** | Monthly |
| Monetization | — | Free |
| Size | 2 MB | 1 MB |
| Requires iOS | 26.0 | **18.6** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [OANA RINALDI](https://appshunter.io/developer/1709880614) | [Berk Sucu](https://appshunter.io/developer/1852063488) |

## What reviewers say

### Goldbach's Conjecture Math

[App page](https://appshunter.io/ios/app/goldbachs-conjecture-math/id6753913944)

**Features:** macOS Compatibility

**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 Goldbach's Conjecture Math free?

Goldbach's Conjecture Math is free to download, with no in-app purchases.

### Is Collatz Explorer free?

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

### Do Goldbach's Conjecture Math or Collatz Explorer have ads?

Neither Goldbach's Conjecture Math nor Collatz Explorer shows ads.

### Which is updated more often, Goldbach's Conjecture Math or Collatz Explorer?

Goldbach's Conjecture Math ships an update weekly, and Collatz Explorer monthly. Most recently, Goldbach's Conjecture Math was updated on October 8, 2026 and Collatz Explorer on September 27, 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.*