# WATT EV CHARGING vs SFX Schoolbus

The clearest difference is ads: SFX Schoolbus at none against WATT EV CHARGING's shown. WATT EV CHARGING's advantage is update cadence (every 5 days vs every 11 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

WATT EV CHARGING ships an update every 5 days, SFX Schoolbus every 11 months. The most recent releases landed on October 10, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | WATT EV CHARGING | SFX Schoolbus |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 5 days** | Every 11 months |
| Size | 152 MB | 34 MB |
| Requires iOS | **15.1** | 15.6 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [WATT](https://appshunter.io/developer/1593867237) | [Plotigo Pte Ltd](https://appshunter.io/developer/1715797631) |

## What reviewers say

### WATT EV CHARGING

[App page](https://appshunter.io/ios/app/watt-ev-charging/id1617293408)

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

**In-app purchases:** none


### SFX Schoolbus

[App page](https://appshunter.io/ios/app/sfx-schoolbus/id6469944399)

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

**In-app purchases:** none


## Frequently asked questions

### Is WATT EV CHARGING free?

WATT EV CHARGING is free to download, with no in-app purchases.

### Is SFX Schoolbus free?

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

### Do WATT EV CHARGING or SFX Schoolbus have ads?

WATT EV CHARGING shows ads; SFX Schoolbus does not.

### Which is updated more often, WATT EV CHARGING or SFX Schoolbus?

WATT EV CHARGING ships an update every 5 days, and SFX Schoolbus every 11 months. Most recently, WATT EV CHARGING was updated on October 10, 2026 and SFX Schoolbus on October 2, 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.*