# Petoi vs Electronics Circuit Simulator

The clearest difference is price: Petoi at Free against Electronics Circuit Simulator's $2.99. Petoi also leads on iOS requirement (15.6 vs 17.0). Electronics Circuit Simulator's advantage is update cadence (monthly vs every 4 months). On ads, in-app purchases and device support there is nothing between them.

Petoi is free to download; Electronics Circuit Simulator costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Petoi ships an update every 4 months, Electronics Circuit Simulator monthly. The most recent releases landed on July 5, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Petoi | Electronics Circuit Simulator |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | **[4.5 (13 ratings)](https://appshunter.io/ios/app/petoi/id1581548095/reviews)** | — |
| Number of ratings | **13** | — |
| Positive reviews | 60.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Monthly** |
| Monetization | Free | — |
| Size | 41 MB | 5 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Petoi LLC](https://appshunter.io/developer/1581548097) | [Yuhsiu Lai](https://appshunter.io/developer/433114647) |

## What reviewers say

### Petoi

[App page](https://appshunter.io/ios/app/petoi/id1581548095)

Configure and control your robot pet toys with this official app. Calibrate joints, perform pre-set actions, and create custom movements. Compatible with Bittle and Nybble robot pets.

**Highlights:** Easy joint calibration, Control robot movement and actions, Create custom robot commands, Share custom commands with community, Compatible with Bittle and Nybble robots

**In-app purchases:** none


### Electronics Circuit Simulator

[App page](https://appshunter.io/ios/app/electronics-circuit-simulator/id6762292048)

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

**In-app purchases:** none


## Frequently asked questions

### Is Petoi free?

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

### Is Electronics Circuit Simulator free?

Electronics Circuit Simulator costs $2.99, with no in-app purchases.

### Do Petoi or Electronics Circuit Simulator have ads?

Neither Petoi nor Electronics Circuit Simulator shows ads.

### Which is updated more often, Petoi or Electronics Circuit Simulator?

Petoi ships an update every 4 months, and Electronics Circuit Simulator monthly. Most recently, Petoi was updated on July 5, 2026 and Electronics Circuit Simulator on September 21, 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.*