PDS vs JoinSelf Messenger
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PDS
Scan PDS-enabled codes on print materials to instantly view verified source and origin data on your device. Offers both online and offline verification for field or remote use. Developed by a print technology solutions provider.
- Scan PDS enabled codes
- Display verified source/origin data
- Online verification
- Offline verification
- Intuitive user interface
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Simply scan PDS enabled code on any print surface and follow prompts to display verified source/origin data on your device. It has a simple and intuitive user friendly interface as well as ONLINE and OFFLINE verification capabilities which is handy when verifying in the field or remotely. KG Arjis Ltd is a solutions provider in process and print technology.
JoinSelf Messenger
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Self is a Messaging, digital identity and personal data app. Giving you control over who you are, what you share and who can communicate with you. Self is free to use, simple and powerful, Sign up by verifying YOURSELF with a passport, and remember, Self doesn't get your passport details. They stay with you, on your Phone, like all your personal data. We don't even know who you are. Self gives you: DIGITAL FREEDOM - You can use Self to prove you are the right human just by being you. Instead of passwords, seed phrases or *** *** codes sent by SMS, Self lets you prove you are you, and does it without disclosing your personal data to whoever wants to check (unless you agree to). Now you can prove your age, prove you approved a payment or logged into a service all without needing to share private, personal data. SECURE COMMUNICATION- Self calls and messages are end to end encrypted, and only between verified people and companies you have agreed to communicate with. No more wondering if a call is genuine or from a scammer, or if that message is a phishing trick or an AI-powered marketing bot. AN ADVANCED WALLET - The companies you buy from can help protect your personal data by storing any they hold with you, in your Self wallet. Now you're not at risk if they get hacked, and you can trust them when they communicate with you through Self, instead of wondering if the email you got was really from your bank and you can use it to make and receive payments in XRP too. CRYPTOGRAPHIC PROOF - Because Self lets you prove who you are, it takes messages beyond communication, now you can sign them, prove you've seen them, prove you've been somewhere, prove you're with someone, all without disclosing any data you don't want to. CONTROL OF YOUR DATA - With Self your personal data is only stored by you, on your phone or in your backup and always encrypted end-to-end. It's not in our database, because we don't have one. It's in your hand and it can only be shared with someone if you choose to share it. You are in control. A REAL NETWORK - Self connections aren't just anyone, they're the people and organisations you know and really trust. We believe the next generation of technology is going to engage and empower people. For the first time people are at the heart of technology. Find out more at: https://joinself.com Self supports all iPhones capable of running iOS16 or newer.
Screenshots
Verdict
The clearest difference is update cadence: JoinSelf Messenger at every 3 weeks against PDS's every 2 months. PDS's advantage is iOS requirement (12.0 vs 15.0). On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
PDS ships an update every 2 months, JoinSelf Messenger every 3 weeks. The most recent releases landed on October 3, 2026 and October 11, 2026 respectively.
| Parameter | PDS | JoinSelf Messenger |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 2 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 12.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 35 MB | 153 MB |
| Age rating | 4+ | 4+ |
| Developer | KG Arjis UK Ltd | Self Group Limited |
In-app purchases
PDS
No in-app purchases
JoinSelf Messenger
No in-app purchases









