MasterKey vs PostPiny
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
MasterKey
Securely store passwords, payment cards, and wallet recovery details with on-device encryption. This offline manager offers robust organization and a built-in password generator without requiring accounts or servers.
- On-device encryption
- Fully offline operation
- Local backup and restore
- Password generator
- Store payment cards and wallet recovery details
- Organize credentials into collections
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MasterKey is a private, offline password manager and secure vault. Store passwords, payment cards, and wallet recovery details with on-device encryption and no accounts or servers. WHAT YOU CAN STORE • Passwords: Email, social, servers, and custom credentials • Collections: Organize related passwords in multiple collection for quick access • Cards: Credit and debit card details • Wallets: Seed phrases, private keys, and passcodes KEY FEATURES • On-device encryption: Your vault is protected locally • Fully offline: No accounts, no sync, no tracking • Backup & restore: Local, encrypted backups you control • Password generator: Create strong, unique passwords instantly • Ad-free: A clean, focused experience MasterKey focuses on privacy by design and simple, reliable organization—so you stay in control of your data. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.freeprivacypolicy.com/live/95d48cc8-6006-4697-867a-593cdeb2d56f
PostPiny
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Stop losing valuable insights from Reddit, Hacker News, and online communities. PostPiny transforms any discussion into organized, actionable notes using AI - no more manual copying or forgotten discoveries. WHY POSTPINY? Turn endless scrolling into curated knowledge. Whether you're tracking startup advice on r/entrepreneur, following tech trends on Hacker News, or researching any topic, PostPiny captures what matters most. KEY FEATURES - One-tap note generation from Reddit, Hacker News, Twitter - AI-powered summaries that extract key insights automatically - Rich text editor with formatting toolbar - no markdown needed - Smart organization with search, tags, and categories - Offline access - all notes stored locally on your device - Export to PDF, text, or share directly with your team - Dark mode for comfortable reading - Cross-platform support for multiple content sources PERFECT FOR - Anyone building a personal knowledge base - Entrepreneurs tracking industry insights and startup advice - Developers following technical discussions and best practices - Researchers organizing information from multiple sources - Students collecting study materials from online communities - Content creators gathering ideas and references HOW IT WORKS 1. Copy any Reddit post or Hacker News discussion URL 2. Paste into PostPiny and tap generate 3. Get instant AI-powered summary and key points 4. Edit, organize, and enhance your notes 5. Access your knowledge library anytime, anywhere SUBSCRIPTION OPTIONS Free: 3 notes per day - perfect for trying the app PostPiny Starter Plan ($6.99/month): 30 notes daily, cloud sync, watermark-free exports PostPiny Professional Plan ($19.99/month): 75 notes daily, advanced features, priority support Subscriptions automatically renew unless auto-renew is turned off at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours prior to the end of the current period at the same price. Transform your online browsing into organized knowledge. Download PostPiny and never lose another valuable insight. Privacy focused - your notes stay on your device unless you choose cloud sync. Terms of Use: https://postpiny.com/terms.html
Screenshots
Verdict
MasterKey and PostPiny are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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. MasterKey sells 2 in-app purchases, starting at $1.99 per month and PostPiny sells 2 in-app purchases, starting at $6.99 per month. Whichever you choose, the download price is not the number that matters.
| Parameter | MasterKey | PostPiny |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 13.0 — better | 13.4 |
| Further details — not scored | ||
| Size | 51 MB | 33 MB |
| Age rating | 12+ | 4+ |
| Developer | Mohamed Al-Kainai | Sidic |
In-app purchases
MasterKey
- Monthly$1.991 Month
- Lifetime$9.99
PostPiny
- Starter$6.991 Month
- Professional$19.991 Month









