# Libry vs 金星の満ち欠けAR

The clearest difference is update cadence: 金星の満ち欠けAR at every 3 weeks against Libry's every 2 months. 金星の満ち欠けAR also leads on iOS requirement (13.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

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

Libry ships an update every 2 months, 金星の満ち欠けAR every 3 weeks. The most recent releases landed on September 26, 2026 and September 11, 2026 respectively.

## The numbers

| Metric | Libry | 金星の満ち欠けAR |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 11.8% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 105 MB | 68 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Libry Inc.](https://appshunter.io/developer/1031867351) | [Hiroyuki Nakano](https://appshunter.io/developer/1091174971) |

## What reviewers say

### Libry

[App page](https://appshunter.io/ios/app/libry/id1147557530)

Transform your physical study materials into digital interactive lessons. This app analyzes your learning patterns to recommend challenging and forgettable questions, offering personalized study support. It allows you to search for specific problems and track your progress.

**Highlights:** Digital textbook viewer, Review forgotten questions, Practice difficult questions, Search problems by keyword, Track favorite and incorrect answers, Learning history

**Features:** Vision Pro support

**In-app purchases:** none


### 金星の満ち欠けAR

[App page](https://appshunter.io/ios/app/ar/id1539098847)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Libry free?

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

### Is 金星の満ち欠けAR free?

金星の満ち欠けAR is free to download, with no in-app purchases.

### Do Libry or 金星の満ち欠けAR have ads?

Neither Libry nor 金星の満ち欠けAR shows ads.

### Which is updated more often, Libry or 金星の満ち欠けAR?

Libry ships an update every 2 months, and 金星の満ち欠けAR every 3 weeks. Most recently, Libry was updated on September 26, 2026 and 金星の満ち欠けAR on September 11, 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.*