# Do Homework vs Plain CALENDAR_

The clearest difference is in-app purchases: Plain CALENDAR_ at none against Do Homework's 1. Plain CALENDAR_ also leads on update cadence (every 2 days vs fortnightly). Do Homework's advantage is device support (3 vs 1) and iOS requirement (11.0 vs 16.0). On price and ads there is nothing between them.

Both are free to download. Do Homework sells 1 one-off in-app purchase. Plain CALENDAR_ asks for nothing beyond the download.

Do Homework ships an update fortnightly, Plain CALENDAR_ every 2 days. The most recent releases landed on October 5, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Do Homework | Plain CALENDAR_ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.3 (3 ratings)](https://appshunter.io/ios/app/do-homework/id1525376795/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 2 days** |
| Monetization | Free with in-app purchases | — |
| Size | 96 MB | 107 MB |
| Requires iOS | **11.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Heavenbrook Software Inc.](https://appshunter.io/developer/451446278) | [Hyobeom Han](https://appshunter.io/developer/1739693153) |

## What reviewers say

### Do Homework

[App page](https://appshunter.io/ios/app/do-homework/id1525376795)

Edit PDFs and images directly, saving changes to new files without altering originals. Merge documents, work with cloud storage, and use a scratchpad for notes. Share files and chat with friends.

**Highlights:** Edit PDFs and images directly, Save edits to new files, Merge PDFs and images, Work with Google Drive, Cloud file sharing, Scratchpad for notes, Draw lines and circles

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Do homework upgrade | $1.99 | one-time |


### Plain CALENDAR_

[App page](https://appshunter.io/ios/app/plain-calendar/id6523414947)

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

**In-app purchases:** none


## Frequently asked questions

### Is Do Homework free?

Do Homework is free to download, with in-app purchases available.

### Is Plain CALENDAR_ free?

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

### Do Do Homework or Plain CALENDAR_ have ads?

Neither Do Homework nor Plain CALENDAR_ shows ads.

### Which is updated more often, Do Homework or Plain CALENDAR_?

Do Homework ships an update fortnightly, and Plain CALENDAR_ every 2 days. Most recently, Do Homework was updated on October 5, 2026 and Plain CALENDAR_ on October 2, 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.*