# C vs Studyaid D.B. ビューア

The clearest difference is review sentiment: Studyaid D.B. ビューア at 61% against C's 25%. Studyaid D.B. ビューア also leads on iOS requirement (11.0 vs 13.0). C's advantage is update cadence (every 3 weeks 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.

C ships an update every 3 weeks, Studyaid D.B. ビューア every 5 months. The most recent releases landed on October 8, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | C | Studyaid D.B. ビューア |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 25.0% of reviews | **61.3% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 5 months |
| Monetization | Free | Free |
| Size | 52 MB | 10 MB |
| Requires iOS | 13.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Netman. Co.,Ltd.](https://appshunter.io/developer/1097455605) | [Suken Shuppan K.K.](https://appshunter.io/developer/611090511) |

## What reviewers say

### C

[App page](https://appshunter.io/ios/app/c-learning-for-student/id1097455606)

This learning management system client allows students and employees to access educational materials, take quizzes, and participate in collaborative projects. It supports domain switching for different organizations and offers features for registering lectures and answering surveys.

**Highlights:** Domain switching for organizations, Lecture registration, Survey and quiz participation, Material browsing and sharing, Collaborative image/video uploads

**Features:** macOS Compatibility, 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 C free?

C 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 C or Studyaid D.B. ビューア have ads?

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

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

C ships an update every 3 weeks, and Studyaid D.B. ビューア every 5 months. Most recently, C was updated on October 8, 2026 and Studyaid D.B. ビューア on October 4, 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.*