# Brain vs TEPCO省エネウォッチ

The clearest difference is device support: TEPCO省エネウォッチ at 3 against Brain's 1. Brain's advantage is iOS requirement (8.0 vs 12.0). On price, update cadence, ads and in-app purchases there is nothing between them.

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

Brain ships an update every 6 weeks, TEPCO省エネウォッチ every 5 weeks. The most recent releases landed on October 11, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | Brain | TEPCO省エネウォッチ |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 5 weeks** |
| Size | 21 MB | 20 MB |
| Requires iOS | **8.0** | 12.0 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [MJ INC.](https://appshunter.io/developer/1077241745) | [TEPCO Energy Partner, Inc.](https://appshunter.io/developer/527906228) |

## What reviewers say

### Brain

[App page](https://appshunter.io/ios/app/brain-f/id1077241746)

**Features:** macOS Compatibility

**In-app purchases:** none


### TEPCO省エネウォッチ

[App page](https://appshunter.io/ios/app/tepco/id1447431669)

**In-app purchases:** none


## Frequently asked questions

### Is Brain free?

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

### Is TEPCO省エネウォッチ free?

TEPCO省エネウォッチ is free to download, with no in-app purchases.

### Do Brain or TEPCO省エネウォッチ have ads?

Neither Brain nor TEPCO省エネウォッチ shows ads.

### Which is updated more often, Brain or TEPCO省エネウォッチ?

Brain ships an update every 6 weeks, and TEPCO省エネウォッチ every 5 weeks. Most recently, Brain was updated on October 11, 2026 and TEPCO省エネウォッチ on October 18, 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.*