# Arlektra vs 555 Timer & Oscillators Guide

The clearest difference is ads: Arlektra at none against 555 Timer & Oscillators Guide's shown. On price, update cadence, 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.

Arlektra ships an update every 6 months, 555 Timer & Oscillators Guide every 5 months. The most recent releases landed on July 9, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | Arlektra | 555 Timer & Oscillators Guide |
| --- | --- | --- |
| 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 | No |
| Ads | **No** | Yes |
| Update frequency | Every 6 months | **Every 5 months** |
| Monetization | Free | — |
| Size | 433 MB | 24 MB |
| Requires iOS | 17.0 | **16.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | +4 |
| Developer | [AR STEM LABS](https://appshunter.io/developer/1449428802) | [ALG Software Lab](https://appshunter.io/developer/1650561236) |

## 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


### 555 Timer & Oscillators Guide

[App page](https://appshunter.io/ios/app/555-timer-and-oscillators-guide/id6504487994)

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

**In-app purchases:** none


## Frequently asked questions

### Is Arlektra free?

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

### Is 555 Timer & Oscillators Guide free?

555 Timer & Oscillators Guide is free to download, with no in-app purchases.

### Do Arlektra or 555 Timer & Oscillators Guide have ads?

555 Timer & Oscillators Guide shows ads; Arlektra does not.

### Which is updated more often, Arlektra or 555 Timer & Oscillators Guide?

Arlektra ships an update every 6 months, and 555 Timer & Oscillators Guide every 5 months. Most recently, Arlektra was updated on July 9, 2026 and 555 Timer & Oscillators Guide on September 24, 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.*