Comparison

HC Key vs HART

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

Head to head
About

HC Key

This app allows you to use your smartphone to unlock doors, eliminating the need for physical credentials. It offers an easy-to-use interface for swift access and enables temporary access for visitors.

Highlights
  • Unlock doors with smartphone
  • Replace physical credentials
  • Easy user registration
  • Grant temporary visitor access
  • Customize visitor access duration
  • Visitor access without app installation
Features
Read full description

HC Key opens all the doors to your favourite places! Hartmann’s HC Key application eliminates the need to carry physical credentials and allows you to unlock doors swiftly and with ease, using your smartphone. KEY FEATURES - HC Key offers an easy to use and interactive interface that makes unlocking doors effortless. - User registration on the HC Key application is easy and takes only seconds. - Replace traditional credentials by using your smartphone. - Grant temporary access to visitors for a predetermined time frame and amount of uses. - Visitors are not required to have the HC Key application installed to use their visitor credentials. VISITOR ACCESS HC Key allows you to create, customize, and grant visitor access credentials directly in the application. Determine the time frame and amount of use for the credential then share this with the visitor. Visitors are not required to have the HC Key application installed to use their credentials. Administrators have the ability to allow or deny users from granting visitors access as well as revoking a visitor pass after it is issued. HOW IT WORKS - HC Key only works with the PROTECTOR.Net software system. - Registration requires users to request credentials from their system administrator. If you’re interested in using HC Key in your company please visit www.hartmann-controls.com to learn more about our access control system.

About

HART

Features
Read full description

HART (habits and routine tracker) helps you build better habits through simple daily tracking and beautiful progress visualization. Create habits, check them off daily, and watch your streaks grow. HART keeps things simple so you actually stick with it. WHAT YOU GET: - Daily habit tracking with streak counters - Focus timer for deep work sessions - Progress rings and completion stats - Clean dark interface that stays out of your way HART PRO UNLOCKS: - Unlimited habits - Full statistics and analytics - Cloud sync across all your devices - Push notifications and reminders Terms of Use: https://hart-app-website-akaj.vercel.app/terms Privacy Policy: https://hart-app-website-akaj.vercel.app/privacy

Screenshots

HC Key3 screens
HART4 screens

Verdict

The call

The clearest difference is in-app purchases: HC Key at none against HART's 3. HART's advantage is update cadence (every 5 days vs every 6 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. HART sells 3 in-app purchases, starting at $0.99 per month. HC Key asks for nothing beyond the download.

UpkeepUpdate frequency

HC Key ships an update every 6 months, HART every 5 days. The most recent releases landed on November 3, 2026 and October 25, 2026 respectively.

Scorecard2 real differences · 8 level
HC Key versus HART: the parameters behind the verdict, then further details
ParameterHC KeyHART
PriceFreeFree
Rating4.4 (121 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings121 — better—
Update frequencyEvery 6 monthsEvery 5 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationAd-supported—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.615.1 — better
Further details — not scored
Size43 MB49 MB
Age rating4+4+
DeveloperHartmann Controls CorpDENYS YAVORSKYI

In-app purchases

None

HC Key

No in-app purchases

3 purchases

HART

Subscriptions2
  • HART Pro Monthly$0.991 Month
  • HART Pro Yearly$9.991 Year
One-time1
  • HART Pro Lifetime$24.99

Questions

Is HC Key free?
HC Key is free to download, with no in-app purchases.
Is HART free?
HART is free to download, with in-app purchases available.
Do HC Key or HART have ads?
Neither HC Key nor HART shows ads.
Which is updated more often, HC Key or HART?
HC Key ships an update every 6 months, and HART every 5 days. Most recently, HC Key was updated on November 3, 2026 and HART on October 25, 2026.

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