Comparison

Zivver vs DUWO APP

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

Head to head
About

Zivver

Securely send emails, chats, and files from any device. This solution uses end-to-end encryption and real-time anomaly detection to prevent data leaks and protect sensitive information.

Highlights
  • Secure email sending
  • Secure chat functionality
  • Secure file transfers
  • End-to-end zero-knowledge encryption
  • Real-time anomaly detection
  • User-friendly interface
  • No recipient account required
Features
Read full description

Zivver enables secure sending of emails, chats or file transfers, from anywhere Zivver is the only solution you need to send communications such as emails, chats and file transfers securely, from anywhere. Used by thousands of organizations to help safeguard sensitive data, enhance productivity and prevent data leaks.  How Zivver works Most people realize that you shouldn’t send sensitive information such as financial details or health information by regular email, chats or file transfers, but often don’t know how to send it securely. That’s where Zivver comes into play.  On top of using advanced end-to-end zero-knowledge encryption, Zivver identifies potential anomalies in real-time when you’re sending communications from our Web application, Outlook plug-in and mobile app. The non-intrusive prompts enable you to catch mistakes before hitting send without disrupting any workflows. This could be a simple case of not selecting the right recipient or including the wrong attachment (you know you’ve made a mistake like that before, we all have). Both of these scenarios are top data leak drivers that can be easily avoided when using Zivver.  Those situations are very common and account for the highest share of data breaches overall. Some are minor embarrassments you try to quickly forget, others can be much more consequential and make headlines for all the wrong reasons. Either way, it’s best to avoid these situations altogether, and with Zivver you can. Easy to use, from anywhere  No one should have to wait around for snail mail for a communication that can be easily sent securely to your inbox, just as you shouldn’t be using regular email to send sensitive information, it’s too risky. Zivver safeguards important communications while providing a user-friendly experience for the people you’re connecting securely with.  Intuitive design principles make the service easy for anyone to use with minimal training. Recipients don’t need to create an account to access Zivver messages, but have the option to set up a free account if they want to. Get Started with Zivver 1. Simply download the app and create your account  2. Set-up two factor authentication (2FA) for optimal security 3. Send your first message securely with Zivver  Technical specifications: - iOS 13 and up - Zivver allows for the storage of data using ISO27001 certified data centers - These data centers are physically in the EEA (European Economic Area) - Zivver uses an ISO 27001:2013 and Auditing: 2011 Certified Information Security Management System (ISMS) - Deloitte periodically attempts to hack our systems to ensure that we remain at the forefront of communication safety, as part of their "Hacking as a Service – Gold level" program - The protection of the data is contractually regulated in Data Protection Agreements and Model Clauses - Zivver communicates with both sender and recipient via a SSL and TLS connection - Zero-knowledge asymmetric encryption means not even Zivver can decrypt your messages

About

DUWO APP

Manage your rental affairs and stay informed about your building and neighborhood. Submit repair requests, view invoices, make payments securely, and connect with residents. Receive real-time updates and easily contact DUWO.

Highlights
  • Submit repair requests
  • View housing information
  • Track payments and invoices
  • Secure direct payments
  • Connect with residents
  • Real-time newsfeed updates
  • Contact DUWO easily
Features
Read full description

Manage your rental affairs anytime, anywhere? You can with the DUWO app. The DUWO app makes it even easier to take care of practical matters related to your housing and stay up to date on what’s happening in your building or neighborhood. With the DUWO app, you can: · easily submit a repair request · quickly find practical housing information about your building or neighborhood · view your invoices and keep track of your payments · make payments directly and securely · connect with fellow residents via the My Community platform – even before your arrival · receive real-time updates through the DUWO Newsfeed, such as maintenance notices, malfunctions, or activities in your building · contact DUWO easily Once you’ve activated the app, you can log in quickly and securely using a PIN code, facial recognition, or fingerprint.

Screenshots

Zivver4 screens
DUWO APP4 screens

Verdict

The call

The clearest difference is review sentiment: Zivver at 100% against DUWO APP's 0%. DUWO APP's advantage is update cadence (monthly vs every 4 months). On price, ads, in-app purchases and monetization model 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Zivver ships an update every 4 months, DUWO APP monthly. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

Scorecard2 real differences · 8 level
Zivver versus DUWO APP: the parameters behind the verdict, then further details
ParameterZivverDUWO APP
PriceFreeFree
Rating—4.4 (27 ratings) — better
Positive reviews100.0% of reviews — better0.0% of reviews
Number of ratings—27 — better
Update frequencyEvery 4 monthsMonthly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.0 — better15.6
Further details — not scored
Size21 MB58 MB
Age rating17+4+
DeveloperZIVVER B.V.Zig Websoftware

Customer experience

Zivver

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

DUWO APP

All ratings27 ratings
Positive85.2%
Neutral3.7%
Negative11.1%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

None

Zivver

No in-app purchases

None

DUWO APP

No in-app purchases

Questions

Is Zivver free?
Zivver is free to download, with no in-app purchases.
Is DUWO APP free?
DUWO APP is free to download, with no in-app purchases.
Do Zivver or DUWO APP have ads?
Neither Zivver nor DUWO APP shows ads.
Which is updated more often, Zivver or DUWO APP?
Zivver ships an update every 4 months, and DUWO APP monthly. Most recently, Zivver was updated on November 2, 2026 and DUWO APP on November 3, 2026.

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