Comparison

DKM vs KCalc App Lock, App Locker

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

DKM

Securely manage your device's apps and sensitive documents with multiple password-protected worlds. Protect your privacy when sharing your device or lend it out without compromising your data.

Highlights
  • App management
  • Secure document storage
  • Multiple password protection
  • Create separate password worlds
  • Child device management
  • Confidential information protection
Features
Read full description

DKM: Document Keeper Multipass is an application that manages applications on devices and sensitive documents, helping users securely store their documents with multiple passwords. Personal data security is an inevitable need, but what to do when you have to share your device with many people or lend your phone to someone? Don't worry, we will help you with that. The most special feature of the application is that users can create many passwords corresponding to many separate worlds. You can give your password to your lover, children, friends without fear that they know what your correct password is. All information is strictly confidential. With the Applications feature, parents or guardians can manage their children's devices in the most effective way. And many interesting features are waiting for you to discover, download now! Terms and Conditions: https://mituultra.com/dkm/terms-conditions Privacy Policy: https://mituultra.com/dkm/privacy-policy Contact the developer team: support@mituultra.com

About

KCalc App Lock, App Locker

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.

Highlights
  • Password & Biometric Protection
  • One-Tap App Protection
  • Private Photo Vault
  • Customizable App Icon
  • Dual Privacy Shield (Guest Passcode)
Read full description

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

Screenshots

DKM4 screens
KCalc App Lock, App Locker4 screens

Verdict

The call

The clearest difference is ads: KCalc App Lock, App Locker at none against DKM's shown. KCalc App Lock, App Locker also leads on monetization model (free vs free with in-app purchases) and update cadence (every 6 days vs every 2 weeks). On price, rating, in-app purchases and device support 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. DKM sells 5 in-app purchases, starting at $1.99 per 7 days and KCalc App Lock, App Locker sells 2 in-app purchases, starting at $5.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.5 for DKM against 4.5 for KCalc App Lock, App Locker. That said, the two scores are not equally well evidenced: KCalc App Lock, App Locker has 44 ratings behind it against 6, so its average is the more settled of the two.

UpkeepUpdate frequency

DKM ships an update every 2 weeks, KCalc App Lock, App Locker every 6 days. The most recent releases landed on September 19, 2026 and September 26, 2026 respectively.

Scorecard4 real differences · 6 level
DKM versus KCalc App Lock, App Locker: the parameters behind the verdict, then further details
ParameterDKMKCalc App Lock, App Locker
PriceFreeFree
Rating4.5 (6 ratings)4.5 (44 ratings)
Positive reviews—97.1% of reviews
Number of ratings644 — better
Update frequencyEvery 2 weeksEvery 6 days — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better16.0
Further details — not scored
Size108 MB31 MB
Age rating4+4+
DeveloperDuyen Tran海芸 吴

Customer experience

DKM

All ratings6 ratings
Positive83.3%
Neutral16.7%
Negative0.0%

KCalc App Lock, App Locker

All ratings44 ratings
Positive88.6%
Neutral2.3%
Negative9.1%
Written reviews34 reviews
Positive97.1%
Neutral0.0%
Negative2.9%

In-app purchases

5 purchases

DKM

Subscriptions5
  • Weekly Premium Plus$1.997 Days
  • Weekly Premium3 Days trial$3.997 Days
  • Monthly Premium7 Days trial$7.991 Month
Show 2 more
  • Premium Monthly Plus$7.991 Month
  • Yearly Premium7 Days trial$14.991 Year
2 purchases

KCalc App Lock, App Locker

Subscriptions1
  • Pro Monthly$5.991 Month
One-time1
  • Pro Lifetime Access$39.99

Questions

Is DKM free?
DKM is free to download, with in-app purchases available.
Is KCalc App Lock, App Locker free?
KCalc App Lock, App Locker is free to download, with in-app purchases available.
Which has better reviews, DKM or KCalc App Lock, App Locker?
DKM and KCalc App Lock, App Locker are both rated 4.5 out of 5 on the App Store, from 6 and 44 ratings respectively.
Do DKM or KCalc App Lock, App Locker have ads?
DKM shows ads; KCalc App Lock, App Locker does not.
Which is updated more often, DKM or KCalc App Lock, App Locker?
DKM ships an update every 2 weeks, and KCalc App Lock, App Locker every 6 days. Most recently, DKM was updated on September 19, 2026 and KCalc App Lock, App Locker on September 26, 2026.

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