# Arlektra vs Knowledge Nerds

The clearest difference is in-app purchases: Arlektra at none against Knowledge Nerds's 10. Knowledge Nerds's advantage is update cadence (every 2 months vs every 6 months) and iOS requirement (15.5 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. Knowledge Nerds sells 10 one-off in-app purchases. Arlektra asks for nothing beyond the download.

Arlektra ships an update every 6 months, Knowledge Nerds every 2 months. The most recent releases landed on July 9, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | Arlektra | Knowledge Nerds |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.4 (7 ratings)](https://appshunter.io/ios/app/arlektra/id1449428803/reviews)** | — |
| Number of ratings | **7** | — |
| Positive reviews | 20.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 2 months** |
| Monetization | Free | — |
| Size | 433 MB | 146 MB |
| Requires iOS | 17.0 | **15.5** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [AR STEM LABS](https://appshunter.io/developer/1449428802) | [Online Learning](https://appshunter.io/developer/1790866777) |

## What reviewers say

### Arlektra

[App page](https://appshunter.io/ios/app/arlektra/id1449428803)

This app uses augmented reality to teach electronics and circuits. Visualize complex theories, build circuits with step-by-step 3D instructions, and explore electrical parts in detail. Learn to use tools like a digital multimeter with interactive guidance.

**Highlights:** Augmented reality 3D instructions, Visualize electrical theories, Step-by-step circuit building, Explore electrical parts in 3D, Learn multimeter usage, Interactive troubleshooting guidance

**In-app purchases:** none


### Knowledge Nerds

[App page](https://appshunter.io/ios/app/knowledge-nerds/id6753704280)

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Package - AV | $34.99 | one-time |
| Package - AY | $39.99 | one-time |
| Package - AZ | $39.99 | one-time |
| Package - BB | $39.99 | one-time |
| Package - BD | $39.99 | one-time |
| Package - AW | $39.99 | one-time |
| Package - BE | $44.99 | one-time |
| Package - BG | $49.99 | one-time |
| Package - BH | $49.99 | one-time |
| Package - BF | $49.99 | one-time |


## Frequently asked questions

### Is Arlektra free?

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

### Is Knowledge Nerds free?

Knowledge Nerds is free to download, with in-app purchases available.

### Do Arlektra or Knowledge Nerds have ads?

Neither Arlektra nor Knowledge Nerds shows ads.

### Which is updated more often, Arlektra or Knowledge Nerds?

Arlektra ships an update every 6 months, and Knowledge Nerds every 2 months. Most recently, Arlektra was updated on July 9, 2026 and Knowledge Nerds on September 22, 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.*