Matrix math calculator vs PDF Watch Viewer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Matrix math calculator
Perform various matrix operations including addition, subtraction, and multiplication. Calculate the transposed matrix, adjoint, inverse, determinant, and rank. Supports matrices of any size (MxN).
- Matrix Addition
- Matrix Subtraction
- Matrix Multiplication
- Transposed Matrix
- Adjoint Matrix
- Inverse Matrix
- Determinant Calculation
- Rank Calculation
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A spectacular application in which you can do operations with matrices, such as Addition, Subtraction and Multiplication. In addition you can also find the Transposed matrix, Adjoint matrix, Inverse matrix, Determinant and Rank of a matrix. (MxN)
PDF Watch Viewer
View PDF documents directly on your Apple Watch without needing your iPhone. Easily transfer files from your web browser, iCloud, email, or messaging apps to your wrist for convenient access.
- View PDFs on Apple Watch
- Transfer files from iPhone
- Add PDFs from web browser
- Add PDFs from iCloud
- Add PDFs from email/messenger
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► PDF Watch Viewer ◄ Leave your iPhone in your pocket and view your PDF directly to your wrist. PDF Watch Viewer allows you to share files between iPhone and Apple Watch. You can add your PDF from your web browser, from your iCloud or opening it from your email, social or messenger. With this app you will be able to see your PDF on your Apple Watch. No need your iPhone connected once your PDF has been sent. PDF Watch Viewer, have all your PDF on your wrist!
Screenshots
Verdict
The clearest difference is in-app purchases: Matrix math calculator at none against PDF Watch Viewer's 1. Matrix math calculator also leads on iOS requirement (13.0 vs 15.0). PDF Watch Viewer's advantage is review sentiment (13% vs 0%). On price, update cadence, ads and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. PDF Watch Viewer sells 1 one-off in-app purchase. Matrix math calculator asks for nothing beyond the download.
Matrix math calculator ships an update every 3 months, PDF Watch Viewer every 2 months. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.
| Parameter | Matrix math calculator | PDF Watch Viewer |
|---|---|---|
| Price | Free | Free |
| Rating | 1.5 (2 ratings) — better | — |
| Positive reviews | 0.0% of reviews | 13.0% of reviews — better |
| Number of ratings | 2 — better | — |
| Update frequency | Every 3 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPod, Apple Watch |
| Requires iOS | 13.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 52 MB | 10 MB |
| Age rating | 4+ | 4+ |
| Developer | camilo arcila | Stefano Russello |
Customer experience
Matrix math calculator
PDF Watch Viewer
In-app purchases
Matrix math calculator
No in-app purchases
PDF Watch Viewer
- Unlimited PDF$1.99
Questions
Is Matrix math calculator free?
Is PDF Watch Viewer free?
Do Matrix math calculator or PDF Watch Viewer have ads?
Which is updated more often, Matrix math calculator or PDF Watch Viewer?
Other comparisons
