Sapphirus LearningChain vs PDK Academy
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Sapphirus LearningChain
This app allows students to securely store their blockchain-based digital certificates in a personal wallet. Certificates can be easily shared on social networks or sent for verification using a simple QR code scan.
- Blockchain digital certificate storage
- Personal certificate wallet
- Social network sharing
- Verification certificate sharing
- QR code scanning for storage
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Learningchain, a blockchain digital certificate wallet enables students to store their block chain digital certificates in their personal storage. One can share the certificates on social network, share to verification certificates. Store your certificates with simple QR code scan.
PDK Academy
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PDK Academy is an educational mobile application developed by Pravin Kardile Sir, aimed at providing a comprehensive and dependable learning experience for students preparing for various competitive examinations.
Screenshots
Verdict
The clearest difference is iOS requirement: Sapphirus LearningChain at 12.0 against PDK Academy's 15.0. On price, update cadence, ads and in-app purchases 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.
Sapphirus LearningChain ships an update every 3 months, PDK Academy every 2 months. The most recent releases landed on October 16, 2026 and October 11, 2026 respectively.
| Parameter | Sapphirus LearningChain | PDK Academy |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 3 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 25 MB | 92 MB |
| Age rating | 4+ | 4+ |
| Developer | Sapphirus Systems Pvt Ltd | Anuj Gupta |
In-app purchases
Sapphirus LearningChain
No in-app purchases
PDK Academy
No in-app purchases
Questions
Is Sapphirus LearningChain free?
Is PDK Academy free?
Do Sapphirus LearningChain or PDK Academy have ads?
Which is updated more often, Sapphirus LearningChain or PDK Academy?
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