Lock Notes vs CalcPlus
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Lock Notes
Securely store private thoughts, passwords, and reminders with biometric authentication. Enjoy a simple, elegant interface with iCloud sync, customizable themes, and backup options. Your data remains private and encrypted.
- Biometric authentication (Face ID, Touch ID)
- Encrypted note storage
- iCloud sync across devices
- Customizable themes and dark mode
- Backup and restore functionality
- Ad-free minimalist interface
Read full descriptionHide full description
Keep a personal notebook for your thoughts, diary entries, ideas and everyday lists. Lock Notes gives your writing its own space, with a passcode and supported biometric unlock to control access. WRITE THE WAY YOU THINK Give long notes structure with headings, bold and italic text, lists and checklists. Add photos directly into your writing, keep a simple journal, or capture an idea before it slips away. FIND WHAT MATTERS Search your notes and find text inside an open note. Automatic saving keeps your edits as you write and when you leave the editor. A clean layout keeps the focus on your text. TAKE YOUR WRITING WITH YOU Export notes as TXT or formatted PDF, share the notes you choose, and print a copy. Use exports for a personal archive, a draft to continue elsewhere, or a list to share. RECOVER AN ACCIDENTAL DELETION Recently Deleted keeps removed notes for up to 30 days, so you can restore one before it is permanently deleted. CHOOSE HOW YOU WORK Write with local storage, adjust the appearance, and use a light or dark interface. Optional cloud synchronization is available with Premium and a compatible cloud account. From a short memo to a longer personal journal, keep your writing easy to find and comfortable to read. - Privacy Policy: https://lykovstudio.io/privacy - Terms of Use: https://lykovstudio.io/terms
CalcPlus
This app combines a fully functional calculator with a secure, encrypted notes system. Store sensitive information like crypto wallet phrases and passwords locally and offline, protected by a PIN and optional biometric authentication. It offers a discreet interface and prioritizes user privacy with no cloud sync or ads.
- Encrypted local notes storage
- Calculator interface
- PIN and biometric security
- Offline functionality
- Customizable themes and app icons
- Auto-wipe on failed attempts
Read full descriptionHide full description
CalcPlus is a fully functional calculator with a hidden encrypted notes system built in. Enter your 6-digit PIN, tap =, and unlock secure, local-only notes storage completely offline. Use CalcPlus to store: • Crypto wallet recovery phrases (Ledger, MetaMask, etc.) • API keys and infrastructure passwords • Home Wi-Fi or VPN credentials • Door codes, admin access, or tax IDs • Any sensitive info that shouldn’t be in iCloud, Google Docs, or your camera roll Everything is encrypted on-device. No cloud sync. No account. No trace. CalcPlus Pro features: • Set your own custom PIN • Enable Face ID / Touch ID 2FA • Wipe notes after failed PIN attempts • Choose between Blue, Red, or Teal themes and auto-switch app icons to match CalcPlus is designed for privacy-focused users, security professionals, and anyone who wants peace of mind without compromise. Why CalcPlus? • Encrypted and offline • Stealthy interface looks like a basic calculator • No signup. No servers. No ads. • Instant, secure access — even when your signal is dead Download CalcPlus and reclaim your privacy.
Screenshots
Verdict
The clearest difference is review sentiment: CalcPlus at 100% against Lock Notes's 55%. CalcPlus also leads on rating (5.0 vs 4.4) and monetization model (free with in-app purchases vs subscription). Lock Notes's advantage is ratings volume (138 vs 2). 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. Lock Notes sells 7 in-app purchases, starting at $4.99 per 7 days and CalcPlus sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
CalcPlus holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: Lock Notes has 138 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 55% of Lock Notes's written reviews are positive against 100% of CalcPlus's.
Lock Notes ships an update every 10 days, CalcPlus fortnightly. The most recent releases landed on October 10, 2026 and October 2, 2026 respectively.
| Parameter | Lock Notes | CalcPlus |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (138 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 55.3% of reviews | 100.0% of reviews — better |
| Number of ratings | 138 — better | 2 |
| Update frequency | Every 10 days — better | Fortnightly |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Subscription | Free with in-app purchases — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 21 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | LYKOV STUDIO LTD | Wildcatter LLC |
Customer experience
Lock Notes
CalcPlus
In-app purchases
Lock Notes
- Weekly$4.997 Days
- Weekly3 Days trial$4.997 Days
- Monthly$7.991 Month
Show 2 moreShow fewer
- Annual$29.991 Year
- Annual3 Days trial$29.991 Year
- Disable ads$0.99
- Lifetime$39.99
CalcPlus
- CalcPlus Pro$9.99









