# Zin Flow vs Tertiary Scanner

The clearest difference is rating: Zin Flow at 5.0 against Tertiary Scanner's 1.0. Zin Flow also leads on update cadence (every 10 days vs every 5 weeks) and ratings volume (3 vs 1). Tertiary Scanner's advantage is in-app purchases (none vs 3) and ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Zin Flow sells 3 in-app purchases, starting at $2.99 per month. Tertiary Scanner asks for nothing beyond the download.

Zin Flow holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 3 and 1 respectively.

Zin Flow ships an update every 10 days, Tertiary Scanner every 5 weeks. The most recent releases landed on October 28, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Zin Flow | Tertiary Scanner |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/zin-flow-web-to-epub/id6743690832/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/tertiary-scanner/id6779988762/reviews) |
| Number of ratings | **3** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 10 days** | Every 5 weeks |
| Monetization | Freemium | **Free** |
| Size | 33 MB | 1 MB |
| Requires iOS | 18.0 | 18.0 |
| Devices | **iPhone, iPad, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [祎 万](https://appshunter.io/developer/1185381861) | [Alfred Ang](https://appshunter.io/developer/1880940227) |

## What reviewers say

### Zin Flow

[App page](https://appshunter.io/ios/app/zin-flow-web-to-epub/id6743690832)

Convert web articles into clean EPUB or Markdown files for offline reading and personal knowledge management. Save content from browsers or other apps, organize with tags, and search your library. Premium offers unlimited conversions and full offline access.

**Highlights:** Web article to EPUB conversion, Markdown export for PKM, Browser and share extensions, Offline reading mode, Tag-based organization, Full-text library search, Multi-article EPUB export

**Features:** Safari Extension, Family Sharing

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro - Monthly | $2.99 | per month |
| Pro - Yearly | $12.99 | per year |
| Pro - Lifetime | $19.99 | one-time |


### Tertiary Scanner

[App page](https://appshunter.io/ios/app/tertiary-scanner/id6779988762)

This app transforms your device into a powerful document scanner. It automatically detects edges, corrects perspective, and enhances scanned pages with various filters. Easily export documents as PDFs or JPGs and utilize built-in OCR for text recognition and search.

**Highlights:** Automatic edge detection and perspective correction, Multiple page scanning into single documents, Image enhancement filters, PDF and JPG export, On-device OCR for text recognition, Save to Photos, Files, or iCloud Drive

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

**In-app purchases:** none


## Frequently asked questions

### Is Zin Flow free?

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

### Is Tertiary Scanner free?

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

### Which has better reviews, Zin Flow or Tertiary Scanner?

Zin Flow is rated higher. Zin Flow averages 5.0 out of 5 from 3 ratings, while Tertiary Scanner averages 1.0 from 1 ratings.

### Do Zin Flow or Tertiary Scanner have ads?

Zin Flow shows ads; Tertiary Scanner does not.

### Which is updated more often, Zin Flow or Tertiary Scanner?

Zin Flow ships an update every 10 days, and Tertiary Scanner every 5 weeks. Most recently, Zin Flow was updated on October 28, 2026 and Tertiary Scanner on October 25, 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.*