# 立体?マップ(3D?Map) vs Red Sheet

The clearest difference is in-app purchases: 立体?マップ(3D?Map) at none against Red Sheet's 1. 立体?マップ(3D?Map) also leads on ads (none vs shown) and iOS requirement (15.0 vs 18.0). On price, update cadence and device support there is nothing between them.

Both are free to download. Red Sheet sells 1 in-app purchase, starting at $2.99 per year. 立体?マップ(3D?Map) asks for nothing beyond the download.

立体?マップ(3D?Map) ships an update weekly, Red Sheet every 4 days. The most recent releases landed on September 30, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | 立体?マップ(3D?Map) | Red Sheet |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Weekly | **Every 4 days** |
| Size | 4 MB | 180 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Mayumi Kato](https://appshunter.io/developer/705832872) | [N-Verse LLC](https://appshunter.io/developer/1868412567) |

## What reviewers say

### 立体?マップ(3D?Map)

[App page](https://appshunter.io/ios/app/3dmap/id6461163734)

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

**In-app purchases:** none


### Red Sheet

[App page](https://appshunter.io/ios/app/red-sheet-kun-ai-study-sheets/id6775183078)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Red Sheet-kun Premium Annual | $2.99 | per year |


## Frequently asked questions

### Is 立体?マップ(3D?Map) free?

立体?マップ(3D?Map) is free to download, with no in-app purchases.

### Is Red Sheet free?

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

### Do 立体?マップ(3D?Map) or Red Sheet have ads?

Red Sheet shows ads; 立体?マップ(3D?Map) does not.

### Which is updated more often, 立体?マップ(3D?Map) or Red Sheet?

立体?マップ(3D?Map) ships an update weekly, and Red Sheet every 4 days. Most recently, 立体?マップ(3D?Map) was updated on September 30, 2026 and Red Sheet on October 5, 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.*