KCalc Lock vs Apocentro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
KCalc Lock
Secure your personal data with multi-layered protection. Lock sensitive apps, photos, and files using passwords or biometrics. Features include one-tap protection, a private photo vault, and a dual privacy shield for enhanced security.
- Password & Biometric Protection
- One-Tap App Protection
- Private Photo Vault
- Customizable App Icon
- Dual Privacy Shield (Guest Passcode)
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KCalc – Your Fully Private & Secure Space With KCalc Privacy Lock, your personal data is protected by multi-layered security. No more worrying about friends or colleagues accidentally accessing your secret apps, photos, or files. • Password & Biometric Protection Secure your space with a strong password or unlock seamlessly via Face ID. • One-Tap Protection Instantly protect sensitive apps with a single tap. Enable the auto-lock feature for enhanced convenience and security. • Private Photo Vault Safely store confidential photos in an encrypted gallery, safeguarded from prying eyes. • Custom App Icon Personalize the app icon to match your style. Choose from multiple icon options for a truly private and personalized experience. • Dual Privacy Shield When asked to unlock under scrutiny, enter the guest passcode to instantly switch to Second Space — your private data stays fully hidden while showing pre-set content. Download KCalc Privacy Lock now and take full control of your digital privacy — fast, smart, and secure. Pro Subscription Information KCalc offers an auto-renewable Pro subscription (monthly). Subscribing unlocks all Pro features in the app. - Payment: Payment will be charged to your Apple Account at confirmation of purchase. - Auto-Renewal: Your subscription automatically renews 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. - Manage or Cancel: You can manage your subscription and turn off auto-renewal at any time in Settings → tap your name → Subscriptions. Terms of Use: https://dawn-zephyr-0e3.notion.site/Terms-of-Use-End-User-License-Agreement-3dc70fc5aff880d382dcca2c6441df51 Privacy Policy: https://dawn-zephyr-0e3.notion.site/Private-Policy-3dc70fc5aff880e783aed858da8eaad2 Feedback & Support: aiseaystudio@gmail.com
Apocentro
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Strategy Backtests, Market News and Encrypted Messaging: Compare long-term backtest results for stocks, forex, commodities and crypto: annualised return, max drawdown, Sharpe ratio and win rate. Then talk it through with your team in private chat. Features: - Smart Search ranks the best strategies for any symbol and timeframe - Live signals, a strategy leaderboard and a DCF calculator - A real-time market news feed - End-to-end encrypted chats, group chats, and voice and video calls - Share photos, files, voice messages and your location Who It's For: Quant enthusiasts, traders and small trading teams.
Screenshots
Verdict
The clearest difference is rating: Apocentro at 5.0 against KCalc Lock's 4.5. Apocentro also leads on in-app purchases (none vs 2). KCalc Lock's advantage is ratings volume (44 vs 1) and update cadence (every 3 days vs every 11 days). On price, ads, device support and iOS requirement 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. KCalc Lock sells 2 in-app purchases, starting at $5.99 per month. Apocentro asks for nothing beyond the download.
Apocentro holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: KCalc Lock has 44 ratings behind it against 1, so its average is the more settled of the two.
KCalc Lock ships an update every 3 days, Apocentro every 11 days. The most recent releases landed on October 21, 2026 and October 22, 2026 respectively.
| Parameter | KCalc Lock | Apocentro |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (44 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 97.1% of reviews | — |
| Number of ratings | 44 — better | 1 |
| Update frequency | Every 3 days — better | Every 11 days |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free | — |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 16.0 | 15.6 — better |
| Further details — not scored | ||
| Size | 33 MB | 91 MB |
| Age rating | 4+ | 17+ |
| Developer | 海芸 吴 | 升 李 |
Customer experience
KCalc Lock
Apocentro
In-app purchases
KCalc Lock
- Pro Monthly$5.991 Month
- Pro Lifetime Access$39.99
Apocentro
No in-app purchases









