# ShapeInfo Plus vs Memo in the Sky

The clearest difference is update cadence: Memo in the Sky at every 2 weeks against ShapeInfo Plus's every 6 months. ShapeInfo Plus's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 18.0). On price, ads and in-app purchases there is nothing between them.

ShapeInfo Plus costs $0.99 and Memo in the Sky $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ShapeInfo Plus ships an update every 6 months, Memo in the Sky every 2 weeks. The most recent releases landed on November 6, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | ShapeInfo Plus | Memo in the Sky |
| --- | --- | --- |
| Price | $0.99 | $0.99 |
| Rating | **[4.6 (31 ratings)](https://appshunter.io/ios/app/shapeinfo-plus/id983851989/reviews)** | — |
| Number of ratings | **31** | — |
| Positive reviews | 65.5% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 2 weeks** |
| Monetization | Paid | — |
| Size | 11 MB | 33 MB |
| Requires iOS | **13.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Noriyasu Kutsuzawa](https://appshunter.io/developer/668500806) | [HARUHIKO ONO](https://appshunter.io/developer/6812592288) |

## What reviewers say

### ShapeInfo Plus

[App page](https://appshunter.io/ios/app/shapeinfo-plus/id983851989)

This app calculates lengths, angles, and areas for various geometric shapes. It supports a wide range of 2D and 3D shapes, making it a handy tool for engineers and students.

**Highlights:** Calculate lengths, angles, and area, Calculate volume for 3D shapes, Supports various 2D and 3D shapes, User-friendly input for calculations, Immediate calculation results

**Features:** Vision Pro support

**In-app purchases:** none


### Memo in the Sky

[App page](https://appshunter.io/ios/app/memo-in-the-sky/id6812592286)

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

**In-app purchases:** none


## Frequently asked questions

### Is ShapeInfo Plus free?

ShapeInfo Plus costs $0.99, with no in-app purchases.

### Is Memo in the Sky free?

Memo in the Sky costs $0.99, with no in-app purchases.

### Do ShapeInfo Plus or Memo in the Sky have ads?

Neither ShapeInfo Plus nor Memo in the Sky shows ads.

### Which is updated more often, ShapeInfo Plus or Memo in the Sky?

ShapeInfo Plus ships an update every 6 months, and Memo in the Sky every 2 weeks. Most recently, ShapeInfo Plus was updated on November 6, 2026 and Memo in the Sky on October 31, 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.*