# Libry vs Studyaid D.B. ビューア

The clearest difference is review sentiment: Studyaid D.B. ビューア at 61% against Libry's 12%. Studyaid D.B. ビューア also leads on iOS requirement (11.0 vs 15.0). Libry's advantage is update cadence (every 2 months vs every 5 months). On price, ads, in-app purchases and monetization model 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, Studyaid D.B. ビューア every 5 months. The most recent releases landed on September 26, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | Libry | Studyaid D.B. ビューア |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 11.8% of reviews | **61.3% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 5 months |
| Monetization | Free | Free |
| Size | 105 MB | 10 MB |
| Requires iOS | 15.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Libry Inc.](https://appshunter.io/developer/1031867351) | [Suken Shuppan K.K.](https://appshunter.io/developer/611090511) |

## 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


### Studyaid D.B. ビューア

[App page](https://appshunter.io/ios/app/studyaid-db/id1436112726)

This viewer app allows you to display educational worksheets created with "Studyaid D.B." on your iPhone or iPad. View received worksheets anytime, anywhere, even offline, and switch between questions, answers, and explanations. Share your understanding by marking questions as "understood" or "not understood."

**Highlights:** Display worksheets created with Studyaid D.B., Offline viewing of received worksheets, Toggle questions, answers, and explanations, Share understanding with 'understood'/'not understood' markers, Network connection required for receiving prints

**In-app purchases:** none


## Frequently asked questions

### Is Libry free?

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

### Is Studyaid D.B. ビューア free?

Studyaid D.B. ビューア is free to download, with no in-app purchases.

### Do Libry or Studyaid D.B. ビューア have ads?

Neither Libry nor Studyaid D.B. ビューア shows ads.

### Which is updated more often, Libry or Studyaid D.B. ビューア?

Libry ships an update every 2 months, and Studyaid D.B. ビューア every 5 months. Most recently, Libry was updated on September 26, 2026 and Studyaid D.B. ビューア on September 22, 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.*