# Goldbach's Conjecture vs Millennium Problems

The clearest difference is price: Millennium Problems at Free against Goldbach's Conjecture's $0.99. Millennium Problems also leads on update cadence (every 4 days vs every 8 months). Goldbach's Conjecture's advantage is iOS requirement (12.0 vs 15.0). On ads, in-app purchases and device support there is nothing between them.

Millennium Problems is free to download; Goldbach's Conjecture costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Goldbach's Conjecture ships an update every 8 months, Millennium Problems every 4 days. The most recent releases landed on September 16, 2026 and June 26, 2026 respectively.

## The numbers

| Metric | Goldbach's Conjecture | Millennium Problems |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/millennium-problems/id6761263693/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 4 days** |
| Monetization | — | Free |
| Size | 34 MB | 9 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPad, Mac | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Ventura Educational Systems](https://appshunter.io/developer/371324172) | [Loic Fonkam](https://appshunter.io/developer/1884693208) |

## What reviewers say

### Goldbach's Conjecture

[App page](https://appshunter.io/ios/app/goldbachs-conjecture/id1385243580)

**In-app purchases:** none


### Millennium Problems

[App page](https://appshunter.io/ios/app/millennium-problems/id6761263693)

Explore seven unsolved mathematical mysteries, each with a million-dollar prize. This app adapts content for all skill levels, from middle schoolers to doctoral researchers, with interactive 3D visualizations and built-in quizzes. Learn at your own pace, offline, with no ads or subscriptions.

**Highlights:** Explains seven major unsolved math problems, Content adapts to skill level (Grade 6 to Graduate), Interactive 3D visualizations, Built-in quizzes with XP and badges, Offline functionality, Optional biometric lock

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

**In-app purchases:** none


## Frequently asked questions

### Is Goldbach's Conjecture free?

Goldbach's Conjecture costs $0.99, with no in-app purchases.

### Is Millennium Problems free?

Millennium Problems is free to download, with no in-app purchases.

### Do Goldbach's Conjecture or Millennium Problems have ads?

Neither Goldbach's Conjecture nor Millennium Problems shows ads.

### Which is updated more often, Goldbach's Conjecture or Millennium Problems?

Goldbach's Conjecture ships an update every 8 months, and Millennium Problems every 4 days. Most recently, Goldbach's Conjecture was updated on September 16, 2026 and Millennium Problems on June 26, 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.*