# Project Clean Grid vs MapTap.gg

The clearest difference is in-app purchases: Project Clean Grid at none against MapTap.gg's 2. Project Clean Grid also leads on iOS requirement (15.1 vs 17.6). MapTap.gg's advantage is ratings volume (16K vs 2) and update cadence (weekly vs monthly). On price, rating, ads and device support there is nothing between them.

Both are free to download. MapTap.gg sells 2 in-app purchases, starting at $2.99 per month. Project Clean Grid asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Project Clean Grid against 4.9 for MapTap.gg. That said, the two scores are not equally well evidenced: MapTap.gg has 16K ratings behind it against 2, so its average is the more settled of the two.

Project Clean Grid ships an update monthly, MapTap.gg weekly. The most recent releases landed on October 15, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | Project Clean Grid | MapTap.gg |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/project-clean-grid/id6636518675/reviews)** | [4.9 (16K ratings)](https://appshunter.io/ios/app/maptapgg/id6755205355/reviews) |
| Number of ratings | 2 | **16K** |
| Positive reviews | — | 92.9% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Weekly** |
| Monetization | **Free** | Free with in-app purchases |
| Best chart rank | — | **#65** |
| Size | 43 MB | 41 MB |
| Requires iOS | **15.1** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Phillip Valko](https://appshunter.io/developer/1762949835) | [MapTap Inc](https://appshunter.io/developer/1852574722) |

## What reviewers say

### Project Clean Grid

[App page](https://appshunter.io/ios/app/project-clean-grid/id6636518675)

This app acts as a forecast for electricity grid emissions, helping users reduce their carbon footprint. By adjusting when electricity is used, users can significantly lower associated emissions based on location and season.

**Highlights:** Grid emissions forecast, Real-time emissions data, Shift electricity usage, Reduce carbon footprint, Location-based emissions, Conserve during high emissions

**Features:** macOS Compatibility

**In-app purchases:** none


### MapTap.gg

[App page](https://appshunter.io/ios/app/maptapgg/id6755205355)

**Currently charting:** #65 Top Free · Education (US App Store)

Explore world geography through daily historical challenges. Discover new locations connected to "this day in history" and tap them on an interactive 3D globe. Learn historical context and improve your geography skills with curated challenges and leaderboards.

**Highlights:** Daily geography challenges, Tap locations on a 3D globe, Historical context for locations, Global leaderboards, Earn badges and streaks, Practice modes with curated challenges

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| MapTap+ Monthly | $2.99 | per month |
| MapTap+ Yearly | $14.99 | per year |


## Frequently asked questions

### Is Project Clean Grid free?

Project Clean Grid is free to download, with no in-app purchases.

### Is MapTap.gg free?

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

### Which has better reviews, Project Clean Grid or MapTap.gg?

Project Clean Grid is rated higher. Project Clean Grid averages 5.0 out of 5 from 2 ratings, while MapTap.gg averages 4.9 from 16K ratings.

### Do Project Clean Grid or MapTap.gg have ads?

Neither Project Clean Grid nor MapTap.gg shows ads.

### Which is updated more often, Project Clean Grid or MapTap.gg?

Project Clean Grid ships an update monthly, and MapTap.gg weekly. Most recently, Project Clean Grid was updated on October 15, 2026 and MapTap.gg on October 20, 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.*