# Zotero vs FlowLog

Zotero and FlowLog are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases 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.

Zotero ships an update every 3 weeks, FlowLog monthly. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Zotero | FlowLog |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (436 ratings)](https://appshunter.io/ios/app/zotero/id1513554812/reviews)** | — |
| Number of ratings | **436** | — |
| Positive reviews | 77.9% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Monthly |
| Monetization | Free | — |
| Size | 237 MB | 6 MB |
| Requires iOS | **16.6** | 17.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Zotero](https://appshunter.io/developer/1513554811) | [HAO YU](https://appshunter.io/developer/1686537040) |

## 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


### FlowLog

[App page](https://appshunter.io/ios/app/flowlog-focus-threads/id6801034854)

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

**In-app purchases:** none


## Frequently asked questions

### Is Zotero free?

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

### Is FlowLog free?

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

### Do Zotero or FlowLog have ads?

Neither Zotero nor FlowLog shows ads.

### Which is updated more often, Zotero or FlowLog?

Zotero ships an update every 3 weeks, and FlowLog monthly. Most recently, Zotero was updated on November 3, 2026 and FlowLog on October 31, 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.*