Comparison

KCalc Lock vs MarkFleet

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

Head to head
About

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.

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

About

MarkFleet

Features
Read full description

Wondering how much your company fleet costs and where you can save? We bring accurate cost data and efficient online management of your vehicles. All in a modern app that saves you costs and time.

Screenshots

KCalc Lock4 screens
MarkFleet3 screens

Verdict

The call

The clearest difference is in-app purchases: MarkFleet at none against KCalc Lock's 2. KCalc Lock's advantage is update cadence (every 3 days vs every 2 months). 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. KCalc Lock sells 2 in-app purchases, starting at $5.99 per month. MarkFleet asks for nothing beyond the download.

UpkeepUpdate frequency

KCalc Lock ships an update every 3 days, MarkFleet every 2 months. The most recent releases landed on October 21, 2026 and October 9, 2026 respectively.

Scorecard2 real differences · 8 level
KCalc Lock versus MarkFleet: the parameters behind the verdict, then further details
ParameterKCalc LockMarkFleet
PriceFreeFree
Rating4.5 (44 ratings) — better—
Positive reviews97.1% of reviews—
Number of ratings44 — better—
Update frequencyEvery 3 days — betterEvery 2 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree—
DevicesiPhone, iPad — betteriPhone
Requires iOS16.0 — better16.6
Further details — not scored
Size33 MB24 MB
Age rating4+4+
Developer海芸 吴SIG IT solutions s.r.o.

In-app purchases

2 purchases

KCalc Lock

Subscriptions1
  • Pro Monthly$5.991 Month
One-time1
  • Pro Lifetime Access$39.99
None

MarkFleet

No in-app purchases

Questions

Is KCalc Lock free?
KCalc Lock is free to download, with in-app purchases available.
Is MarkFleet free?
MarkFleet is free to download, with no in-app purchases.
Do KCalc Lock or MarkFleet have ads?
Neither KCalc Lock nor MarkFleet shows ads.
Which is updated more often, KCalc Lock or MarkFleet?
KCalc Lock ships an update every 3 days, and MarkFleet every 2 months. Most recently, KCalc Lock was updated on October 21, 2026 and MarkFleet on October 9, 2026.

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