Outline App vs DuoIoT
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Outline App
Create and manage your own virtual private network (VPN) server for secure and private internet access. Share access with friends or colleagues by sending them an invitation directly from the manager. Enjoy fast, reliable, and encrypted connections to the open internet.
- Set up your own VPN server
- Securely access the open internet
- Keep communications private
- Share access with trusted individuals
- Fast and reliable connections
- Strong encryption
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Outline is an easy way for you to set up your own virtual private network (VPN) server to more safely access the open internet and keep your communications private. If you have received an access key, download the Outline app to get started. If you haven’t received an access key, you’ll first need to set-up your own server. Get started by downloading the Outline Manager from getoutline.org. Creating your own server is quick and easy, and instructions in the Manager will guide you through each step. How Do I Set Up Outline? - Outline consists of two related products: the Outline Manager and Outline. - The Outline Manager lets you create and operate your own VPN, and share access with anyone you choose by sending them an invitation directly from the Manager. Once you’ve downloaded the Manager, you can easily set up a VPN server on a cloud provider in less than five minutes. - After setup is complete, you can download the Outline app on your phone and desktop. - Share internet access with coworkers or friends by inviting them directly from the Manager. - If you’ve received an access code from someone using an Outline Manager you’re all set! Just download the app and get started. Why use Outline? - Fast, reliable access to the open internet, powered by the Shadowsocks protocol - Allows you to create and maintain your own VPN server and provide access with those you trust - Strong encryption keeps your communications private - Completely open source and audited by a nonprofit security firm
DuoIoT
Real-time GPS tracking for vehicles, equipment, and assets. Monitor locations, review trip history, and set up custom alerts for important areas. Secure and reliable asset management.
- Real-time GPS tracking
- Vehicle and equipment monitoring
- Historical trip playback
- Interactive map view
- Geofence creation
- Customizable alerts
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DuoIoT is a feature-packed GPS tracking application allowing you to monitor and manage vehicles, equipment, and other assets in real-time. With our easy-to-install GPS trackers, you can view location updates, playback historical trips via an interactive map, create geofence important areas to receive custom alerts, and much more. Whether you're monitoring a commercial fleet, construction equipment, protecting valuables in transit, or keeping tabs on family vehicles, DuoIoT provides the features you need. Our platform is secure, reliable, and easy to use. Sign up now to start tracking and managing your assets in real-time!
Screenshots
Verdict
The clearest difference is rating: DuoIoT at 5.0 against Outline App's 4.2. DuoIoT also leads on update cadence (weekly vs every 2 months) and iOS requirement (12.0 vs 15.5). Outline App's advantage is ratings volume (1.5K vs 1). 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
DuoIoT holds the better App Store score, 5.0 against 4.2. That said, the two scores are not equally well evidenced: Outline App has 1.5K ratings behind it against 1, so its average is the more settled of the two.
Outline App ships an update every 2 months, DuoIoT weekly. The most recent releases landed on September 22, 2026 and September 7, 2026 respectively.
| Parameter | Outline App | DuoIoT |
|---|---|---|
| Price | Free | Free |
| Rating | 4.2 (1.5K ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 56.8% of reviews | — |
| Number of ratings | 1.5K — better | 1 |
| Update frequency | Every 2 months | Weekly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.5 | 12.0 — better |
| Further details — not scored | ||
| Size | 34 MB | 41 MB |
| Age rating | 4+ | 4+ |
| Developer | Outline Foundation | Shenzhen Dualmi Technology Co., Ltd. |
Customer experience
Outline App
DuoIoT
Bugs and requests
Outline App
Reported bugs
3 issues- App crashes after recent updates
- Unable to add new servers on iOS
- Connectivity problems in certain regions (e.g. Iran, China)
Requested features
5 requests- Add iOS widget support
- Improve UI/UX, especially on larger screens
- Provide more server location options
- Implement kill switch and split-tunneling features
- Add statistics and usage tracking
DuoIoT
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Outline App
No in-app purchases
DuoIoT
No in-app purchases
