Calculator Pro+ - Private SMS
Calculator Pro+ - Private SMS Summary
Calculator Pro+ - Private SMS is a ad-supported, with in-app purchases Android app in Communication by Private SMS Box. Released in Jul 2015 (10 years ago). It has about 1M+ installs and 4.6K ratings with a 4.42★ (good) average. Based on AppGoblin estimates, it reaches roughly 65.2K monthly active users and generates around $10K+ monthly revenue (69% IAP / 31% ads). Store metadata: updated Jan 13, 2026, version 260401132.
Recent activity: 46.2K installs this week (82.4K over 4 weeks) showing exceptional growth , and 3.00 new ratings this week View trends →
Data tracking: SDKs and third-party integrations were last analyzed on Jan 28, 2026. The app's network data flows (API traffic to/from the app and its SDKs) were last crawled on Mar 9, 2026.
Store info: Last updated on Google Play on Jan 13, 2026 (version 260401132).
Calculator Pro+ - Private SMS was last scanned for SDKs 2026-01-28. Below is the overview of third party companies detected in the app. The full list of raw SDKs, app permissions and unknown SDKs is available here.
Square
Kotlin
Bumptech
Branch
AdMob
Google
Firebase4.42★
Ratings: 4.6K
Screenshots
App Description
Hide private SMS & in-app calls inside a real working calculator. Secure vault.
🔢 𝗖𝗮𝗹𝗰𝘂𝗹𝗮𝘁𝗼𝗿 𝗣𝗿𝗼+ — 𝗧𝗵𝗲 𝗖𝗮𝗹𝗰𝘂𝗹𝗮𝘁𝗼𝗿 𝗧𝗵𝗮𝘁 𝗞𝗲𝗲𝗽𝘀 𝗬𝗼𝘂𝗿 𝗣𝗿𝗶𝘃𝗮𝘁𝗲 𝗟𝗶𝗳𝗲 𝗣𝗿𝗶𝘃𝗮𝘁𝗲
Calculator Pro+ looks and works like a normal calculator. Enter your
secret PIN on the keypad and unlock a completely hidden world — private
SMS, in-app calls, chats and media, invisible to everyone else.
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🧮 𝗛𝗜𝗗𝗗𝗘𝗡 𝗜𝗡𝗦𝗜𝗗𝗘 𝗔 𝗥𝗘𝗔𝗟 𝗖𝗔𝗟𝗖𝗨𝗟𝗔𝗧𝗢𝗥
Dial your secret PIN on the keypad to open your private vault — no
swipes, no obvious unlock screens. On Android 9 and below, hide the
app icon completely and access it via a secret browser link. On
Android 10 and above, the app stays visible as a normal calculator.
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🔒 𝗠𝗨𝗟𝗧𝗜-𝗟𝗔𝗬𝗘𝗥 𝗦𝗘𝗖𝗨𝗥𝗜𝗧𝗬
• PIN lock & fingerprint unlock
• Fake PIN — decoy shows empty inbox to anyone who asks
• Auto-lock on screen off or idle timer
• Shake-to-close for instant privacy in public
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💬 𝗣𝗥𝗜𝗩𝗔𝗧𝗘 𝗠𝗘𝗦𝗦𝗔𝗚𝗜𝗡𝗚 — 𝗧𝗪𝗢 𝗪𝗔𝗬𝗦
── Hide Native SMS & MMS (via free AdvanceSMS app) ──
Set AdvanceSMS as your default SMS app — it silently routes private
contacts' messages into Calculator Pro+'s vault. Never visible in
your phone's native inbox. Replies sent as normal SMS with no
indication you are using a hidden app.
── Free App-to-App Messaging ──
When both sides use Calculator Pro+, messages travel over the app's
own private network — no SMS, no carrier charges, no device traces.
Free over Wi-Fi or mobile data.
• Smart reply suggestions
• Disappearing messages — 1 hour to 3 months
• Delete for Everyone — both sides, instantly
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📞 𝗜𝗡-𝗔𝗣𝗣 𝗩𝗢𝗜𝗣 𝗩𝗢𝗜𝗖𝗘 & 𝗩𝗜𝗗𝗘𝗢 𝗖𝗔𝗟𝗟𝗦
Voice and video calls between Calculator Pro+ users over the
internet — no carrier minutes, no native call log trace, no SIM
required. Full-screen incoming call even on a locked screen.
Bluetooth and speakerphone supported.
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📵 𝗦𝗠𝗦 & 𝗖𝗔𝗟𝗟 𝗕𝗟𝗢𝗖𝗞𝗘𝗥
Block unwanted contacts silently through the app. All blocked
activity logged privately inside your vault.
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☁️ 𝗚𝗢𝗢𝗚𝗟𝗘 𝗗𝗥𝗜𝗩𝗘 𝗕𝗔𝗖𝗞𝗨𝗣 & 𝗥𝗘𝗦𝗧𝗢𝗥𝗘
Auto-backup on a daily, weekly or monthly schedule. Restore
everything in one tap when you switch phones or reinstall the app.
Local backup to device storage also supported.
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📱 𝗩𝗜𝗥𝗧𝗨𝗔𝗟 𝗡𝗨𝗠𝗕𝗘𝗥𝗦
Buy a temporary number inside the app and contact anyone without
revealing your real phone number.
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🎨 𝗙𝗨𝗟𝗟 𝗖𝗨𝗦𝗧𝗢𝗠𝗜𝗦𝗔𝗧𝗜𝗢𝗡
Wallpaper themes, Colors themes, dark mode, custom bubble colours, fonts,
per-contact ringtones, wallpapers and 300+ emoji.
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✅ 𝗪𝗛𝗬 𝗖𝗔𝗟𝗖𝗨𝗟𝗔𝗧𝗢𝗥 𝗣𝗥𝗢+
✔ Real working calculator — zero suspicion
✔ App icon hidden from launcher on Android 9 and below
✔ Fake PIN decoy inbox
✔ Native SMS/MMS hidden via free AdvanceSMS companion app
✔ Free app-to-app internet messaging — no carrier charges
✔ VoIP calls — no native call log trace
✔ Disappearing messages & Delete for Everyone
✔ Google Drive auto-backup & one-tap restore
✔ Virtual numbers to mask your real phone number
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𝗨𝗣𝗚𝗥𝗔𝗗𝗘 𝗧𝗢 𝗣𝗥𝗢
Go ad-free and unlock premium themes, custom bubble styles and
unlimited colour and font customisation — available as an
auto-renewing subscription.
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📲 Download Calculator Pro+ — the only messaging app that doesn't
look like one.