# Unnecessary knowledge mobile vs STRUCTOGRAM

The clearest difference is in-app purchases: STRUCTOGRAM at none against Unnecessary knowledge mobile's 1. STRUCTOGRAM also leads on ads (none vs shown). Unnecessary knowledge mobile's advantage is update cadence (every 3 months vs every 9 months) and iOS requirement (9.0 vs 15.6). On price, review sentiment and device support there is nothing between them.

Both are free to download. Unnecessary knowledge mobile sells 1 one-off in-app purchase. STRUCTOGRAM asks for nothing beyond the download.

Unnecessary knowledge mobile ships an update every 3 months, STRUCTOGRAM every 9 months. The most recent releases landed on September 28, 2026 and June 25, 2026 respectively.

## The numbers

| Metric | Unnecessary knowledge mobile | STRUCTOGRAM |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (6 ratings)](https://appshunter.io/ios/app/unnecessary-knowledge-mobile/id451935979/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | **80.1% of reviews** | 75.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 3 months** | Every 9 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 22 MB | 62 MB |
| Requires iOS | **9.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Benjamin Lochmann](https://appshunter.io/developer/419104936) | [IBSA Institut für Biostruktur-Analysen AG](https://appshunter.io/developer/1222487681) |

## What reviewers say

### Unnecessary knowledge mobile

[App page](https://appshunter.io/ios/app/unnecessary-knowledge-mobile/id451935979)

Discover a vast collection of over 2,100 intriguing and often amusing facts across 18 diverse categories. Learn about everything from internet passwords to medical terms and historical trivia. Save your favorite facts for easy access.

**Highlights:** 2,100+ useless facts, 18 fact categories, Save favorite facts, Facts from trivia shows, Categorized trivia

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Adfree! | $0.99 | one-time |

**What reviewers like**

- 👍 Easy to use and simple interface
- 🧠 Interesting and entertaining facts
- 💬 Great conversation starters
- ⏰ Perfect for killing time
- 🎯 Wide variety of topics

**What reviewers complain about**

- ❌ Many facts are false or inaccurate
- 🔄 Repetitive content after extended use
- 📱 UI cluttered and needs improvement
- 🐛 Share to Facebook button doesn't work
- ✍️ Grammar and spelling errors

**Reported bugs**

- Share to Facebook button non-functional
- Repetitive facts displayed
- Contradictory facts within app
- Small navigation buttons on iPad
- No landscape orientation support

**Requested features**

- More facts and regular updates
- Landscape view for iPad
- Better navigation with back/forward buttons
- Ability to filter out Love and Sex category
- Larger next/previous buttons


### STRUCTOGRAM

[App page](https://appshunter.io/ios/app/structogram/id683979684)

Explore biostructural analysis through interactive sampling and practice. Designed for professionals, this application offers a hands-on way to engage with and understand complex analytical concepts.

**Highlights:** Biostructural analysis exploration, Interactive sampling tool, Practice for professionals, Educational resource

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Unnecessary knowledge mobile free?

Unnecessary knowledge mobile is free to download, with in-app purchases available.

### Is STRUCTOGRAM free?

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

### Do Unnecessary knowledge mobile or STRUCTOGRAM have ads?

Unnecessary knowledge mobile shows ads; STRUCTOGRAM does not.

### Which is updated more often, Unnecessary knowledge mobile or STRUCTOGRAM?

Unnecessary knowledge mobile ships an update every 3 months, and STRUCTOGRAM every 9 months. Most recently, Unnecessary knowledge mobile was updated on September 28, 2026 and STRUCTOGRAM on June 25, 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.*