# DartPDF vs ObsiKO

DartPDF and ObsiKO 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.

DartPDF ships an update every 4 days, ObsiKO every 6 days. The most recent releases landed on October 13, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | DartPDF | ObsiKO |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/dartpdf-edit-pdf-documents/id6780083686/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 6 days |
| Monetization | Free | — |
| Size | 53 MB | 75 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPad, iPod, Mac | iPhone, iPad, iPod, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Railway Engineering Solutions Pty Ltd](https://appshunter.io/developer/1565117809) | [Hyojin Kim](https://appshunter.io/developer/6783405453) |

## What reviewers say

### DartPDF

[App page](https://appshunter.io/ios/app/dartpdf-edit-pdf-documents/id6780083686)

Edit, annotate, and sign PDF documents directly on your device. This app allows you to fill forms, redact sensitive information, rearrange pages, and even edit text and images within PDFs. All changes are saved locally, ensuring your data remains private.

**Highlights:** Edit text and images, Fill forms and add signatures, Redact sensitive content, Rearrange and export pages, OCR scanned PDFs, Full-text search

**Features:** Vision Pro support

**In-app purchases:** none


### ObsiKO

[App page](https://appshunter.io/ios/app/obsiko-ai-note-plus-mindmap/id6783405451)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is DartPDF free?

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

### Is ObsiKO free?

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

### Do DartPDF or ObsiKO have ads?

Neither DartPDF nor ObsiKO shows ads.

### Which is updated more often, DartPDF or ObsiKO?

DartPDF ships an update every 4 days, and ObsiKO every 6 days. Most recently, DartPDF was updated on October 13, 2026 and ObsiKO on October 10, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*