# Napier's Bones Simulation vs Electricity

The clearest difference is update cadence: Napier's Bones Simulation at every 25 months against Electricity's every 62 months. On price, ads, in-app purchases and device support there is nothing between them.

Napier's Bones Simulation costs $1.99 and Electricity $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Napier's Bones Simulation ships an update every 25 months, Electricity every 62 months. The most recent releases landed on October 26, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Napier's Bones Simulation | Electricity |
| --- | --- | --- |
| Price | $1.99 | $1.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 25 months** | Every 62 months |
| Size | 29 MB | 263 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | **iPhone, iPad, iPod, Apple TV** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ventura Educational Systems](https://appshunter.io/developer/371324172) | [VIRTUAL FILAMENTS PRIVATE LIMITED](https://appshunter.io/developer/1474217212) |

## What reviewers say

### Napier's Bones Simulation

[App page](https://appshunter.io/ios/app/napiers-bones-simulation/id1093899282)

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

**In-app purchases:** none


### Electricity

[App page](https://appshunter.io/ios/app/electricity-edutech-era/id1537222849)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Napier's Bones Simulation free?

Napier's Bones Simulation costs $1.99, with no in-app purchases.

### Is Electricity free?

Electricity costs $1.99, with no in-app purchases.

### Do Napier's Bones Simulation or Electricity have ads?

Neither Napier's Bones Simulation nor Electricity shows ads.

### Which is updated more often, Napier's Bones Simulation or Electricity?

Napier's Bones Simulation ships an update every 25 months, and Electricity every 62 months. Most recently, Napier's Bones Simulation was updated on October 26, 2026 and Electricity on October 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.*