Comparison

ZT vs Nash dom

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

Head to head
About

ZT

Connect with incarcerated individuals through a comprehensive mobile service. Send letters, photos, make audio/video calls, and transfer funds. Offers entertainment options like puzzles and games to enrich communication.

Highlights
  • Send electronic letters and photos
  • Make audio and video calls
  • Transfer money to inmate accounts
  • Add puzzles and games to letters
  • Instant printing at correctional facilities
Features
Read full description

ZT — крупнейший сервис для поддержания общения с заключенными и осужденными в России. Все услуги в одном приложении: от письма до видеовызова. Электронные письма Отправляйте текстовые письма, цветные или чёрно-белые фотографии через приложение. Моментальная печать в учреждении, проверка цензором от 1 до 3 дней. К письму можно добавить раскраски, японские кроссворды, судоку, оригами и шахматные задачи. Это поможет вашему близкому провести время с пользой. Аудио и видео вызовы Общайтесь голосом или по видео через мобильное приложение. Аудиовызовы в приложении дешевле сотовой связи до 48% в зависимости от региона. Видеовызовы в ZT доступны только в приложении. Денежные переводы Переводите деньги на личный счёт осужденного, чтобы он мог купить всё необходимое в магазине учреждения. Перевод доходит до учреждения за 1-3 рабочих дня. Скачивайте приложение ZT и поддерживайте связь с близким человеком!

About

Nash dom

Manage smart apartment building functions, including intercom access, live camera feeds, and payment for services. Residents can control doors remotely, view security cameras, and access call history. The app offers convenience for managing guests, couriers, and home security.

Highlights
  • Remote intercom control
  • Live camera streaming
  • Temporary guest codes
  • Intercom call history
  • Service payment integration
  • Video archive download
Features
Read full description

«Nash Dom» is one of the most loved and downloaded applications for managing the smart functions of apartment buildings. Residents of more than 200 cities have already used our services 2 billion times. You can easily access individual paid services to manage advanced home settings. Family subscription is also available. Control smart intercom «Sputnik» Open the door with your mobile phone, so you don't need keys. Customize the widget or use the door open button in the app's main screen. If you have guests coming and you're not at home, you can take a video call on your mobile phone wherever you are. Watch your home online Watch courtyard cameras in real time, as well as cameras installed in the elevator or on the floor. Easily switch between cameras on the app's main screen. Find intruders If something happened to your car or your bike was stolen, download the video archive from the cameras. Meet guests and couriers The intercom temporary code allows your guests to easily enter the entrance without disturbing you with calls, and the courier will be able to bring the order directly to the apartment door. Find out who came in your absence For those who like to keep everything under control, we have a history of calls from the intercom for the last 30 days. Any event from the list can be removed at your request. Pay for services Companies providing services in your house can add the ability to pay for their services in the application (intercom, home Internet, and others). Using the usual services will become even more convenient. Our team works from 17 cities around the world. We study the world's best services for smart homes and continue to bring bold ideas to life. In 2023, new features await you, that will benefit residents of any apartment building.

Screenshots

ZT4 screens
Nash dom4 screens

Verdict

The call

The clearest difference is in-app purchases: ZT at none against Nash dom's 1. ZT also leads on iOS requirement (12.0 vs 15.0). On price, rating, review sentiment and ratings volume 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. Nash dom sells 1 in-app purchase, starting at $0.99 per month. ZT asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.6 for ZT against 4.6 for Nash dom. Both are backed by a comparable volume of ratings — 212 and 526 respectively. Written reviews are what separate them: 11% of ZT's written reviews are positive against 16% of Nash dom's.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on September 24, 2026 and September 27, 2026 respectively.

Scorecard3 real differences · 7 level
ZT versus Nash dom: the parameters behind the verdict, then further details
ParameterZTNash dom
PriceFreeFree
Rating4.6 (212 ratings)4.6 (526 ratings)
Positive reviews11.1% of reviews15.6% of reviews — better
Number of ratings212526 — better
Update frequencyEvery 3 weeksEvery 3 weeks
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.0 — better15.0
Further details — not scored
Size121 MB409 MB
Age rating4+4+
DeveloperZTK, OOOSputnik.Systems

Customer experience

ZT

All ratings212 ratings
Positive90.1%
Neutral0.9%
Negative9.0%
Written reviews27 reviews
Positive11.1%
Neutral3.7%
Negative85.2%

Nash dom

All ratings526 ratings
Positive90.5%
Neutral1.3%
Negative8.2%
Written reviews96 reviews
Positive15.6%
Neutral4.2%
Negative80.2%

Bugs and requests

ZT

Not enough reviews yet to summarise bugs or requests.

Nash dom

Reported bugs

14 issues
  • App crashes on startup with black screen
  • Incoming doorbell calls don't trigger app notification
  • Video feed freezes during active calls
  • Door unlock button unresponsive or requires multiple taps
  • App logs out user repeatedly during calls
Show 9 more
  • Horizontal orientation display broken
  • Widget launches app instead of opening door directly
  • Video archive fails to load
  • Incompatibility with iOS 14.2-14.4 on iPhone
  • Excessive zoom on video feed during calls
  • Phone continues ringing after opening door from intercom
  • History/visitor photos fail to capture or load
  • App requires forced update with no backward compatibility
  • Mandatory splash screen delay before app access

Requested features

9 requests
  • Custom access codes that don't change monthly
  • Multiple address/property support in single account
  • Offline mode for basic door unlock functionality
  • Apple Watch app version
  • Faster loading with minimal internet requirement
Show 4 more
  • Persistent widget that opens door without launching app
  • Better video archive loading (3+ days)
  • Improved notification system for incoming calls
  • Support for older iOS versions (12.5.7 and below)

In-app purchases

None

ZT

No in-app purchases

1 purchases

Nash dom

Subscriptions1
  • "Standard" (1 month)$0.991 Month

Questions

Is ZT free?
ZT is free to download, with no in-app purchases.
Is Nash dom free?
Nash dom is free to download, with in-app purchases available.
Which has better reviews, ZT or Nash dom?
ZT and Nash dom are both rated 4.6 out of 5 on the App Store, from 212 and 526 ratings respectively.
Do ZT or Nash dom have ads?
Neither ZT nor Nash dom shows ads.
Which is updated more often, ZT or Nash dom?
ZT ships an update every 3 weeks, and Nash dom every 3 weeks. Most recently, ZT was updated on September 24, 2026 and Nash dom on September 27, 2026.

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