# Zotero vs FocusDTC

The clearest difference is in-app purchases: Zotero at none against FocusDTC's 4. Zotero also leads on device support and iOS requirement (16.6 vs 26.1). On price there is nothing between them.

Both are free to download. FocusDTC sells 4 one-off in-app purchases. Zotero asks for nothing beyond the download.

## The numbers

| Metric | Zotero | FocusDTC |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (435 ratings)](https://appshunter.io/ios/app/zotero/id1513554812/reviews)** | — |
| Number of ratings | **435** | — |
| Positive reviews | 77.9% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | — |
| Update frequency | Every 3 weeks | — |
| Monetization | Free | — |
| Size | 237 MB | 13 MB |
| Requires iOS | **16.6** | 26.1 |
| Devices | **iPhone, iPad** | — |
| Age rating | 4+ | 4+ |
| Developer | [Zotero](https://appshunter.io/developer/1513554811) | [LI-CHENG YEH](https://appshunter.io/developer/1878987707) |

## What reviewers say

### Zotero

[App page](https://appshunter.io/ios/app/zotero/id1513554812)

This research tool helps you collect, organize, annotate, cite, and share your academic and professional work. Save articles, books, and webpages, add notes and highlights, and generate bibliographies in thousands of styles. Collaborate with others and sync your library across devices.

**Highlights:** Collect research from various sources, Organize with collections and tags, Annotate PDFs and webpages, Generate citations and bibliographies, Collaborate in group libraries, Sync across devices

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Simple and powerful
- 🚀 Convenient and useful
- 🚀 Seamless syncing across devices
- 🚀 Excellent reference management
- 👍 Great annotation and PDF reading experience

**What reviewers complain about**

- 🐛 Crashes frequently
- 🐛 Syncing issues with WebDAV
- 🐛 Metadata not automatically extracted from PDFs
- 🐛 Annotation tools could be improved
- 🐛 Limited sorting and filtering options

**Reported bugs**

- Unable to unzip PDF snapshots
- Annotations disappearing or moving unexpectedly
- Dark mode not working as expected
- Inability to add citations directly from the app

**Requested features**

- Eraser tool for annotations
- More color options for pen and highlighter
- Ability to open PDFs in external apps
- Bookmarking and table of contents support
- Improved search functionality


### FocusDTC

[App page](https://appshunter.io/ios/app/focusdtc/id6759488365)

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Coffee | $2.99 | one-time |
| Buy Me Lunch | $8.99 | one-time |
| Buy Me Dinner | $17.99 | one-time |
| Big Love | $199.99 | one-time |


## Frequently asked questions

### Is Zotero free?

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

### Is FocusDTC free?

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

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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.*