# Studyaid D.B. ビューア vs GRAPES

Studyaid D.B. ビューア and GRAPES are too close to call on the numbers: across 8 compared parameters — price, review sentiment, update cadence and ads among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

Studyaid D.B. ビューア ships an update every 5 months, GRAPES every 3 months. The most recent releases landed on September 22, 2026 and June 4, 2026 respectively.

## The numbers

| Metric | Studyaid D.B. ビューア | GRAPES |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.0 (1 ratings)](https://appshunter.io/ios/app/grapes-light/id1437354864/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | **61.3% of reviews** | 58.8% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 3 months** |
| Monetization | Free | Free |
| Size | 10 MB | 44 MB |
| Requires iOS | 11.0 | **10.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Suken Shuppan K.K.](https://appshunter.io/developer/611090511) | [TOKYO SHOSEKI CO.,LTD.](https://appshunter.io/developer/449549534) |

## What reviewers say

### 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


### GRAPES

[App page](https://appshunter.io/ios/app/grapes-light/id1437354864)

This educational app allows users to graph mathematical functions and relationships with advanced features. It incorporates dynamic "movement" to enhance learning and includes nearly 150 samples. Optimized for tablets, it offers a streamlined experience for exploring mathematics.

**Highlights:** Graph relations and discontinuous functions, Learn through dynamic 'movement', Tablet-optimized UI, Includes nearly 150 samples, Advanced mathematical functions

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### 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.

### Is GRAPES free?

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

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

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

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

Studyaid D.B. ビューア ships an update every 5 months, and GRAPES every 3 months. Most recently, Studyaid D.B. ビューア was updated on September 22, 2026 and GRAPES on June 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.*