# Lumin vs Crop Sentinel

The clearest difference is ads: Crop Sentinel at none against Lumin's shown. Crop Sentinel also leads on update cadence (every 2 days vs every 8 days) and iOS requirement (13.0 vs 17.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Lumin ships an update every 8 days, Crop Sentinel every 2 days. The most recent releases landed on November 6, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Lumin | Crop Sentinel |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (940 ratings)](https://appshunter.io/ios/app/lumin-view-edit-share-pdf/id1367372862/reviews)** | — |
| Number of ratings | **940** | — |
| Positive reviews | 32.1% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 8 days | **Every 2 days** |
| Monetization | Free with in-app purchases | — |
| Size | 304 MB | 52 MB |
| Requires iOS | 17.0 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Nitrolabs Limited](https://appshunter.io/developer/1367372861) | [Burks Thomas](https://appshunter.io/developer/1873388151) |

## What reviewers say

### Lumin

[App page](https://appshunter.io/ios/app/lumin-view-edit-share-pdf/id1367372862)

Edit, share, and collaborate on PDF documents in the cloud. This app offers a suite of tools for annotating, organizing, and signing PDFs, with seamless integration for cloud storage and real-time collaboration.

**Highlights:** Seamless document management, Cloud integration and auto-save, Versatile editing and annotation tools, Document organization and conversion, Pre-designed templates, Real-time collaboration, eSignatures and form filling, Scanning to PDF

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🚀 Smooth performance
- 👍 Easy to use
- 💡 Useful annotation tools
- 🚀 Fast PDF rendering

**What reviewers complain about**

- 🐛 Crashes and freezes
- 🔒 Unreliable data sync
- 💰 Expensive subscription
- 🐛 Buggy app experience

**Reported bugs**

- Lost work and unsaved changes
- Inability to open/access files
- Frequent login issues
- Compatibility problems on mobile

**Requested features**

- Offline mode support
- Split-screen functionality
- Improved highlight/annotation tools
- Better Google Drive integration


### Crop Sentinel

[App page](https://appshunter.io/ios/app/crop-sentinel/id6758527742)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Lumin free?

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

### Is Crop Sentinel free?

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

### Do Lumin or Crop Sentinel have ads?

Lumin shows ads; Crop Sentinel does not.

### Which is updated more often, Lumin or Crop Sentinel?

Lumin ships an update every 8 days, and Crop Sentinel every 2 days. Most recently, Lumin was updated on November 6, 2026 and Crop Sentinel 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.*