VIPER vs λ | Cortex Go
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
VIPER
Connect to Viper recorders remotely using your iOS device. View live and recorded footage, control PTZ cameras, and receive event push notifications for enhanced security monitoring.
- Remote recorder connection
- PTZ camera control
- Live image viewing
- Recorded image viewing
- Event push notifications
- P2P connection
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VIPER REMOTE This app allows the user to remotely connect to Viper recorders using iOS devices. Features include: - PTZ control - View live and recorded images - Event push - P2P connection
λ | Cortex Go
Access and manage your video surveillance system remotely. View live feeds, playback recordings, and receive instant alerts for motion or alarms. Supports multiple NVR models and offers advanced features like digital zoom and PTZ control.
- Live video streaming
- Video playback and recording
- Push notifications for alarms/motion
- Digital zoom and PTZ control
- Multi-site connectivity
- Instant video snapshots and sharing
- P2P connectivity for remote setup
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Compatible with λ | Cortex NVR devices - λ | Cortex NVR range (Terminator, Hibernator, Genisys & λ | Cortex Max models) Features include: - Multiple layouts - Video playback - Multi-site connectivity - Digital Zoom - PTZ Control - Hot swappable camera tiling - Instant snapshot of video and share to shareable apps - Record video footage - Push notification when alarm or motion is triggered - P2P connectivity for simple remote setup - Timeline with activity - Auto populate any site by tapping site name in portrait mode - Animated swipe left/right to load next/previous set of cameras - Forward and rewind 10 sec by tapping left/right side of full-screen - Supports Security level 1 - Re-arrange the order of devices/favourites by hold, drag and drop when device/favourites list is collapsed - Swipe left/right to load next/previous site's favorites while streaming favorites - Thumbnails as a preview in the timeline for playback video when a user scrolls over the timeline - Group favorites from different sites and auto-populate - Camera audio support - Audio challenge - Share last saved video clip to shareable apps - Backup from timeline - VA activity on timeline for λ | cortex max NVRs - File manager to list snapshots and videos - λ | Cortex TV support - Smart search
Screenshots
Verdict
The clearest difference is review sentiment: λ | Cortex Go at 38% against VIPER's 0%. λ | Cortex Go also leads on update cadence (every 3 months vs every 6 months) and iOS requirement (9.0 vs 13.0). 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.
VIPER ships an update every 6 months, λ | Cortex Go every 3 months. The most recent releases landed on September 7, 2026 and September 3, 2026 respectively.
| Parameter | VIPER | λ | Cortex Go |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (2 ratings) — better |
| Positive reviews | 0.0% of reviews | 37.5% of reviews — better |
| Number of ratings | — | 2 — better |
| Update frequency | Every 6 months | Every 3 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 | 9.0 — better |
| Further details — not scored | ||
| Size | 34 MB | 28 MB |
| Age rating | 4+ | 4+ |
| Developer | Norbain SD Ltd. | adata ltd |
Customer experience
VIPER
λ | Cortex Go
In-app purchases
VIPER
No in-app purchases
λ | Cortex Go
No in-app purchases
