RXO Chat vs Wrist PDF
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
RXO Chat
Connect your Ruby Calculator hardware to an iPhone or iPad. Exchange messages via Bluetooth or internet, and transfer notes for storage with the Ultimate Edition. Utilizes Apple's native Bluetooth Low Energy for seamless connectivity.
- Connect Ruby Calculator hardware
- Message exchange via Bluetooth
- Message exchange via Internet
- Transfer notes for storage
- Utilizes Bluetooth Low Energy
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RXO Chat allows users of the Ruby Calculator to connect their hardware to an Apple iPhone or iPad. Once connected, users will be able to exchange messages over a Bluetooth or Internet Connection. Additionally, with Ruby Calculator Ultimate Edition the user will be able to transfer up to 300000 words of notes to the calculator for storage. The app utilises Apples native Bluetooth Low Energy peripheral in conjunction with a BLE module on the Ruby Calculator to establish and maintain connectivity.
Wrist PDF
Access and read PDF files, documents, and notes directly from your smartwatch. Enjoy fast loading, smooth navigation, and a clean interface for on-the-go document management. Seamlessly integrates with your paired phone for quick access to essential information.
- View PDFs on smartwatch
- Fast PDF loading
- Smooth page navigation
- Supports documents and notes
- Clean, wrist-friendly interface
- Works with paired phone
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WristDocs allows you to view, read, and manage PDF files directly on your smartwatch. Quickly access documents, notes, manuals, receipts, and study material right from your wrist. Enjoy fast PDF loading, smooth page navigation, and easy zoom with a clean, wrist-friendly interface. Works seamlessly with your paired phone. Key Features: • View & read PDFs on smartwatch • Fast PDF loading • Clean & minimal interface • Smooth page navigation • Supports documents, notes & manuals • Works with paired phone Perfect For: • Students viewing notes • Professionals checking quick documents • Anyone who needs PDFs on their wrist APP SUBSCRIPTION • 1-Week Plan – $3.99 • 1-Month Plan – $9.99 • 1-Year Plan – $49.99 • Auto-renewable subscription • 3-day free trial available • Subscription auto-renews unless canceled 24 hours before the end of the current period • Payment charged to Apple ID at purchase confirmation • Manage & cancel from Apple ID settings APP INFO • Privacy Policy – https://sites.google.com/view/watchpdf/home • Terms of Use – https://sites.google.com/view/watchpdf/terms-of-use • Support – https://sites.google.com/view/watchpdf/support
Screenshots
Verdict
The clearest difference is review sentiment: RXO Chat at 83% against Wrist PDF's 0%. RXO Chat also leads on rating (4.5 vs 3.0) and in-app purchases (none vs 3). Wrist PDF's advantage is update cadence (every 11 days vs every 2 months). On price, ads, device support and iOS requirement 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. Wrist PDF sells 3 in-app purchases, starting at $3.99 per 7 days. RXO Chat asks for nothing beyond the download.
RXO Chat holds the better App Store score, 4.5 against 3.0. Both are backed by a comparable volume of ratings — 8 and 2 respectively. Written reviews point the same way: 83% of RXO Chat's written reviews are positive against 0% of Wrist PDF's.
RXO Chat ships an update every 2 months, Wrist PDF every 11 days. The most recent releases landed on November 2, 2026 and November 5, 2026 respectively.
| Parameter | RXO Chat | Wrist PDF |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (8 ratings) — better | 3.0 (2 ratings) |
| Positive reviews | 83.3% of reviews — better | 0.0% of reviews |
| Number of ratings | 8 — better | 2 |
| Update frequency | Every 2 months | Every 11 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Subscription |
| Devices | iPhone, iPad, iPod | iPhone, iPod, Apple Watch |
| Requires iOS | 15.6 | 15.6 |
| Further details — not scored | ||
| Size | 2 MB | 52 MB |
| Age rating | 17+ | 4+ |
| Developer | Ruby Devices Pty Ltd | Mr Siddharth |
Customer experience
RXO Chat
Wrist PDF
In-app purchases
RXO Chat
No in-app purchases
Wrist PDF
- Weekly Plan3 Days trial$3.997 Days
- Monthly plan3 Days trial$9.991 Month
- Yearly Plan3 Days trial$49.991 Year









