# λ | Cortex Go vs Polar

The clearest difference is in-app purchases: λ | Cortex Go at none against Polar's 1. λ | Cortex Go also leads on iOS requirement (9.0 vs 17.4). Polar's advantage is update cadence (every 5 weeks vs every 3 months). On price, ads and device support there is nothing between them.

Both are free to download. Polar sells 1 in-app purchase, starting at $25.00 per year. λ | Cortex Go asks for nothing beyond the download.

λ | Cortex Go ships an update every 3 months, Polar every 5 weeks. The most recent releases landed on October 4, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | λ | Cortex Go | Polar |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/cortex-go/id1460785740/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 37.5% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 5 weeks** |
| Monetization | Free | — |
| Size | 28 MB | 69 MB |
| Requires iOS | **9.0** | 17.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [adata ltd](https://appshunter.io/developer/372163703) | [GivEnergy Software Limited](https://appshunter.io/developer/1711761312) |

## What reviewers say

### λ | Cortex Go

[App page](https://appshunter.io/ios/app/cortex-go/id1460785740)

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.

**Highlights:** 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

**Features:** macOS Compatibility

**In-app purchases:** none


### Polar

[App page](https://appshunter.io/ios/app/polar-ess/id6478309215)

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Yearly Subscription | $25.00 | per year |


## Frequently asked questions

### Is λ | Cortex Go free?

λ | Cortex Go is free to download, with no in-app purchases.

### Is Polar free?

Polar is free to download, with in-app purchases available.

### Do λ | Cortex Go or Polar have ads?

Neither λ | Cortex Go nor Polar shows ads.

### Which is updated more often, λ | Cortex Go or Polar?

λ | Cortex Go ships an update every 3 months, and Polar every 5 weeks. Most recently, λ | Cortex Go was updated on October 4, 2026 and Polar on September 20, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*