# Inowattio vs YellowGrid

The clearest difference is in-app purchases: YellowGrid at none against Inowattio's 4. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Inowattio sells 4 one-off in-app purchases. YellowGrid asks for nothing beyond the download.

Both ship on a similar rhythm, roughly fortnightly. The most recent releases landed on October 11, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | Inowattio | YellowGrid |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/yellowgrid/id6747118921/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Fortnightly | Fortnightly |
| Monetization | — | Free |
| Size | 74 MB | 94 MB |
| Requires iOS | **15.1** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Inowattio SRL](https://appshunter.io/developer/1735922003) | [YellowGrid](https://appshunter.io/developer/1896555484) |

## What reviewers say

### Inowattio

[App page](https://appshunter.io/ios/app/inowattio/id6479408995)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 5 Credits | $0.99 | one-time |
| 50 Credits | $9.99 | one-time |
| 250 Credits | $49.99 | one-time |
| 500 Credits | $99.99 | one-time |


### YellowGrid

[App page](https://appshunter.io/ios/app/yellowgrid/id6747118921)

Monitor your solar energy production and consumption in real time. Track your earnings from selling surplus energy to the grid and manage your battery reserves. Connect your solar system to a network for trading and receive monthly proceeds.

**Highlights:** Real-time energy production and consumption monitoring, Surplus energy tracking to the grid, Earnings and monthly payment tracking, Battery capacity reservation, Connect solar systems for energy trading, Assistance with solar installation

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Inowattio free?

Inowattio is free to download, with in-app purchases available.

### Is YellowGrid free?

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

### Do Inowattio or YellowGrid have ads?

Neither Inowattio nor YellowGrid shows ads.

### Which is updated more often, Inowattio or YellowGrid?

Inowattio ships an update fortnightly, and YellowGrid fortnightly. Most recently, Inowattio was updated on October 11, 2026 and YellowGrid on September 26, 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.*