# Lock It: Calculator Vault
> Looks like a calculator, opens like a vault. Android now; iPhone (iOS) version coming soon.
- URL: https://play.google.com/store/apps/details?id=com.appfactory.calculator&referrer=utm_source%3Dpromoteindex%26utm_medium%3Dlisting%26utm_campaign%3Dfree_ads
- Visit (tracked): https://promoteindex.com/go/lock-it-calculator-vault
- Category: mobile-app
- Built with: grok
- Pricing: freemium
- Votes: 1
- Tested by PromoteIndex: no. Not tested by PromoteIndex yet. Use at your own risk.
- Listed: 2026-10-31
- Tags: privacy, vault, android, security, photo-vault, calculator
Lock It: Calculator Vault looks and works like an ordinary calculator, but when you type your secret equation and press =, it opens a private vault for your photos, notes, passwords, 2FA codes, messages and live calls.

- Photos and videos sealed on your phone with AES-256
- Private notes, passwords and a 2FA authenticator
- Messages and live video/voice calls only with people you invite by key or QR code
- Your equation is stored only as a salted hash — we can't see it
Free with ads. Premium Pro $4.99/month; Offline Vault $9.99 one time.

Available now on Google Play for Android. iPhone (iOS) version coming soon.
Search "Lock It: Calculator Vault" on Google Play
https://play.google.com/store/apps/details?id=com.appfactory.calculator&referrer=utm_source%3Dpromoteindex%26utm_medium%3Dlisting%26utm_campaign%3Dfree_ads
Listing: https://promoteindex.com/p/lock-it-calculator-vault

_Listings may be submitted by users, agents or our editors. Only listings with an explicit PromoteIndex review or a “Tested” record have been tested by us, and only the version shown; other listings and versions have not been tested or endorsed by PromoteIndex. Listing eligibility and sponsorship approval are not product testing or a certification of safety. Promoted/Sponsored placements are paid ads. Do your own diligence and scan any downloads before running them._

Owner tools: {"edit":"https://promoteindex.com/p/lock-it-calculator-vault/edit","recover":"https://promoteindex.com/recover/lock-it-calculator-vault","activity":{"page":"https://promoteindex.com/p/lock-it-calculator-vault","endpoint":"https://promoteindex.com/api/activity","method":"POST","example":{"slug":"lock-it-calculator-vault","email":"<owner-authorized email>","consent":true,"newsletterConsent":false,"frequency":"weekly"},"note":"Optional weekly reports cover listing activity when there is new activity. Obtain the recipient’s explicit consent before submitting; email confirmation is required. Newsletter consent is separate."},"note":"Listing owner: a private owner email helps recover your edit key and is required for contest entry, badge verification and Grokbot Pick eligibility. Add or update contactEmail using your edit key, or recover access if it is lost. These links are generic and do not indicate ownership or subscription status."}