# PDF Notes S vs Sitoplazma Notes

The clearest difference is rating: Sitoplazma Notes at 5.0 against PDF Notes S's 4.2. Sitoplazma Notes also leads on in-app purchases (none vs 2) and ads (none vs shown). PDF Notes S's advantage is iOS requirement (13.0 vs 15.6). On price, review sentiment, ratings volume and update cadence there is nothing between them.

Both are free to download. PDF Notes S sells 2 in-app purchases, starting at $0.99 per month. Sitoplazma Notes asks for nothing beyond the download.

Sitoplazma Notes holds the better App Store score, 5.0 against 4.2. Both are backed by a comparable volume of ratings — 5 and 2 respectively. Written reviews point the same way: 53% of PDF Notes S's written reviews are positive against 57% of Sitoplazma Notes's.

PDF Notes S ships an update every 6 weeks, Sitoplazma Notes every 3 weeks. The most recent releases landed on September 20, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | PDF Notes S | Sitoplazma Notes |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.2 (5 ratings)](https://appshunter.io/ios/app/pdf-notes-s/id961336139/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/sitoplazma-notes/id1123352827/reviews)** |
| Number of ratings | **5** | 2 |
| Positive reviews | 52.9% of reviews | **56.7% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 6 weeks | **Every 3 weeks** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 22 MB | 3 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [AMuseTec Co., Ltd.](https://appshunter.io/developer/342152781) | [BERKHAN AGAR SITOPLAZMA BILIM VE TEKNOLOJI ARASTIRMA MERKEZI](https://appshunter.io/developer/1052607591) |

## What reviewers say

### PDF Notes S

[App page](https://appshunter.io/ios/app/pdf-notes-s/id961336139)

This app offers a dual-page PDF viewer with smooth scrolling and fast page turns. It also provides document management, quick previews of various file types, and annotation tools. An upgrade removes ads and unlocks full functionality.

**Highlights:** Dual-page PDF viewer, Horizontal/vertical scroll and page turns, Document browser for file organization, Quick Look for various file types, ZIP file preview without unzipping, 8 handwriting tools, Cache manager for fast page turns

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Plan | $0.99 | per month |
| Yearly Plan | $9.99 | per year |


### Sitoplazma Notes

[App page](https://appshunter.io/ios/app/sitoplazma-notes/id1123352827)

Capture your thoughts and memories with this digital notebook. Organize your entries by date and tag them for easy retrieval. Access your notes from any device with an internet connection.

**Highlights:** Save ideas and memories, Organize notes by day, Personal diary function, Tag notes for classification, Access notes from anywhere, Cloud sync with Sitoplazma Account

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is PDF Notes S free?

PDF Notes S is free to download, with in-app purchases available.

### Is Sitoplazma Notes free?

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

### Which has better reviews, PDF Notes S or Sitoplazma Notes?

Sitoplazma Notes is rated higher. PDF Notes S averages 4.2 out of 5 from 5 ratings, while Sitoplazma Notes averages 5.0 from 2 ratings.

### Do PDF Notes S or Sitoplazma Notes have ads?

PDF Notes S shows ads; Sitoplazma Notes does not.

### Which is updated more often, PDF Notes S or Sitoplazma Notes?

PDF Notes S ships an update every 6 weeks, and Sitoplazma Notes every 3 weeks. Most recently, PDF Notes S was updated on September 20, 2026 and Sitoplazma Notes on October 12, 2026.

---

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