Piyion vs JustPDF
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Piyion
Unify all your customer conversations from WhatsApp Business, Instagram, Facebook Messenger, Telegram, and your website into one platform. Automate customer support with an integrated chatbot.
- Unified inbox for multiple channels
- WhatsApp Business integration
- Instagram Messenger integration
- Facebook Messenger integration
- Telegram integration
- Website chat integration
- Automated chatbot support
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Your Piyion chat center! Handle chats efficiently and power online advisors with Piyion. We unify your WhatsApp Business, Instagram, Facebook Messenger, Telegram and Website chats in a single chat center platform, in addition to automating the attention of your digital channels with our Piyi chatbot.
JustPDF
A minimalist PDF reader for local document storage and offline viewing. Import PDFs from various sources into a private library designed for focus. Enjoy a clean, ad-free experience with a one-time purchase for unlimited access.
- Offline PDF reading
- Private on-device storage
- Clean PDF viewer
- No ads
- No account or cloud dependency
- Fast access to library
- One-time purchase
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JustPDF is a minimalist PDF reader for people who want one simple place for the PDFs that matter. Import PDFs from Files, Mail, Safari, AirDrop, or other apps and keep them stored locally on your device. Read offline, zoom naturally, scroll without clutter, and reopen documents from a quiet private library built for focus. Why people choose JustPDF: • Offline PDF reader • Private on-device storage • Clean PDF viewer with no ads • No account and no cloud dependency • Fast access to your personal PDF library • One-time purchase, no subscription Start free with your first 3 PDFs. When you need more, unlock unlimited imports with a single lifetime purchase. JustPDF is built for reading, not for bloat. If you want a calm, local PDF reader that stays out of your way, this is it.
Screenshots
Verdict
The clearest difference is in-app purchases: Piyion at none against JustPDF's 1. Piyion also leads on iOS requirement (15.1 vs 18.6). On price, review sentiment, update cadence and ads 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. JustPDF sells 1 one-off in-app purchase. Piyion asks for nothing beyond the download.
Piyion ships an update weekly, JustPDF every 2 weeks. The most recent releases landed on November 3, 2026 and November 9, 2026 respectively.
| Parameter | Piyion | JustPDF |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | — |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 2 — better | — |
| Update frequency | Weekly — better | Every 2 weeks |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.1 — better | 18.6 |
| Further details — not scored | ||
| Size | 41 MB | 23 MB |
| Age rating | 4+ | +4 |
| Developer | Piyion INC | Johanna Hoppe |
Customer experience
Piyion
JustPDF
In-app purchases
Piyion
No in-app purchases
JustPDF
- JustPDF Lifetime Unlock$4.99
