# Study Timer App vs Image to PDF

The clearest difference is in-app purchases: Study Timer App at none against Image to PDF's 3. Study Timer App also leads on ads (none vs shown) and update cadence (every 2 days vs every 2 months). On price and device support there is nothing between them.

Both are free to download. Image to PDF sells 3 in-app purchases, starting at $1.99 per 7 days. Study Timer App asks for nothing beyond the download.

Study Timer App ships an update every 2 days, Image to PDF every 2 months. The most recent releases landed on September 29, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Study Timer App | Image to PDF |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 2 days** | Every 2 months |
| Size | 39 MB | 25 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Jigang Lee](https://appshunter.io/developer/1725399426) | [Nikunj Kavathiya](https://appshunter.io/developer/1568975861) |

## What reviewers say

### Study Timer App

[App page](https://appshunter.io/ios/app/study-timer-app/id6479210596)

**Features:** macOS Compatibility

**In-app purchases:** none


### Image to PDF

[App page](https://appshunter.io/ios/app/image-to-pdf-merge-pdf/id6760172178)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Week | $1.99 | per 7 days |
| 1 Month | $4.99 | per month |
| 12 Month | $29.99 | per year |


## Frequently asked questions

### Is Study Timer App free?

Study Timer App is free to download, with no in-app purchases.

### Is Image to PDF free?

Image to PDF is free to download, with in-app purchases available.

### Do Study Timer App or Image to PDF have ads?

Image to PDF shows ads; Study Timer App does not.

### Which is updated more often, Study Timer App or Image to PDF?

Study Timer App ships an update every 2 days, and Image to PDF every 2 months. Most recently, Study Timer App was updated on September 29, 2026 and Image to PDF 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.*