E vs DefaultVPN
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
E
This app provides a secure and convenient authentication system. It uses a challenge-response model where your secret access key is stored on your mobile phone, eliminating the need for complex passwords and protecting against malware. Authorization is a simple process of entering a challenge value and receiving a number-answer.
- High-level security authentication
- Secret access key stored on mobile
- Challenge-response authorization
- No complex passwords needed
- Malware protection for access key
- Efficient and economical system
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1. About E-num -------------- E-num is an up-to-date system of authentication providing high-level security. Security is based on both cryptographic tools and architectural level. A secret access key is stored not on your computer but on your mobile phone. Thus, you can use it to work on different computers. Moreover, your key cannot be damaged or modified by Trojan Hourses and other harmful programs. 2. Authorization process --------------------- E-num is easy to use: there is no need to memorize complicated passwords. The authorization process is based on the challenge-response model. Authorization process by using E-NUM is very simple: on the authorization page the user enters his email and received a Challenge Value. Users launches the E-num application on the mobile phone and enters the Challenge Value. After that a number-answer will be shown on the phone display. User enters the number-answer in the authorization field on the website and gets access to secured sections. 3. Advantages ------------ The key advantage of E-NUM if compared with its analogs is efficiency and economy for both suppliers and consumers. No additional authorizing server is required to implement the E-NUM authorization system on a website of an Internet store, in banking or corporate systems, because all necessary information is stored in the E-NUM database. Data exchange is performed by using E-num interfaces provided by the system via the secure https protocol. Clients use their (Java compatible) mobile phones to get authorized at websites integrated with E-NUM. Users do not need any kind of expensive devices. A unique cipherpad is embedded in the Java application designed for mobile phones.
DefaultVPN
This is a free, open-source VPN client that requires a separate VPN configuration key to function. It prioritizes user privacy by storing all data locally on the device and not collecting or transmitting personal information.
- Free open-source VPN client
- Requires VPN configuration key
- No personal data collection
- Local data storage
- Privacy-focused
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Default VPN is a free open-source VPN client. It is not a ready-made VPN service. To use it, a VPN configuration in the form of a key is required. Default VPN does not collect or transmit personal data. All data entered by users is stored locally on the device.
Screenshots
Verdict
The clearest difference is review sentiment: E at 100% against DefaultVPN's 44%. E also leads on iOS requirement (13.0 vs 16.0). On price, update cadence, ads and in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
E ships an update fortnightly, DefaultVPN every 3 weeks. The most recent releases landed on September 11, 2026 and September 21, 2026 respectively.
| Parameter | E | DefaultVPN |
|---|---|---|
| Price | Free | Free |
| Rating | — | 3.7 (44 ratings) — better |
| Positive reviews | 100.0% of reviews — better | 43.7% of reviews |
| Number of ratings | — | 44 — better |
| Update frequency | Fortnightly — better | Every 3 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 13.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 38 MB | 85 MB |
| Age rating | 4+ | 17+ |
| Developer | VEBMANI.RU, OOO | AMNEZIA UNIPESSOAL LDA |
Customer experience
E
DefaultVPN
In-app purchases
E
No in-app purchases
DefaultVPN
No in-app purchases








