# CalcuDose vs PDF Editor & Reader

The clearest difference is monetization model: CalcuDose at free with in-app purchases against PDF Editor & Reader's subscription. CalcuDose also leads on update cadence (every 6 days vs every 3 weeks) and iOS requirement (12.0 vs 18.0). PDF Editor & Reader's advantage is review sentiment (100% vs 86%). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. CalcuDose sells 1 one-off in-app purchase and PDF Editor & Reader sells 2 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

CalcuDose ships an update every 6 days, PDF Editor & Reader every 3 weeks. The most recent releases landed on October 7, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | CalcuDose | PDF Editor & Reader |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/pdf-editor-and-reader-studio/id6794797860/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 85.7% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 6 days** | Every 3 weeks |
| Monetization | **Free with in-app purchases** | Subscription |
| Size | 28 MB | 21 MB |
| Requires iOS | **12.0** | 18.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [QRTouch Development](https://appshunter.io/developer/1543008653) | [Apptimize LLC](https://appshunter.io/developer/1643932210) |

## What reviewers say

### CalcuDose

[App page](https://appshunter.io/ios/app/calcudose/id1609062237)

Easily calculate liquid dosages and flow rates for medical applications. Input concentration, desired quantity, or volume and duration to get precise results in ml/h and drops/min. Access your last 15 calculations through the history feature.

**Highlights:** Dose calculation, Flow rate calculation, Unit and volume input, Time unit selection, Drops per ml selection, Calculation history

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CalcuDose unlimited for life | $1.99 | one-time |


### PDF Editor & Reader

[App page](https://appshunter.io/ios/app/pdf-editor-and-reader-studio/id6794797860)

Edit, read, and convert documents directly on your device. This app offers tools to scan, merge, split, sign, and protect your files. It also uses AI to summarize, translate, and answer questions about document text.

**Highlights:** Read and mark up PDFs, Scan documents with camera, Convert PDFs to Word, Word to PDF, Organize pages (merge, split, reorder), Sign, protect, and redact documents, AI-powered summarization and translation, Content search across documents

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Weekly | $4.99 | per 7 days |
| PDF Pro Annual | $39.99 | per year |


## Frequently asked questions

### Is CalcuDose free?

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

### Is PDF Editor & Reader free?

PDF Editor & Reader is free to download, with in-app purchases available.

### Do CalcuDose or PDF Editor & Reader have ads?

Neither CalcuDose nor PDF Editor & Reader shows ads.

### Which is updated more often, CalcuDose or PDF Editor & Reader?

CalcuDose ships an update every 6 days, and PDF Editor & Reader every 3 weeks. Most recently, CalcuDose was updated on October 7, 2026 and PDF Editor & Reader on October 16, 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.*