# smartCHECK vs iStreams North Sea (E)

The clearest difference is price: iStreams North Sea (E) at Free against smartCHECK's $13.99. smartCHECK's advantage is update cadence (every 3 weeks vs every 2 months) and iOS requirement (16.6 vs 18.4). On ads, in-app purchases and device support there is nothing between them.

iStreams North Sea (E) is free to download; smartCHECK costs $13.99 up front. smartCHECK sells 2 in-app purchases, starting at $2.99 per month and iStreams North Sea (E) sells 5 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

smartCHECK ships an update every 3 weeks, iStreams North Sea (E) every 2 months. The most recent releases landed on October 19, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | smartCHECK | iStreams North Sea (E) |
| --- | --- | --- |
| Price | $13.99 | **Free** |
| Rating | **[4.0 (9 ratings)](https://appshunter.io/ios/app/smartcheck/id1055282751/reviews)** | — |
| Number of ratings | **9** | — |
| Positive reviews | 71.4% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Monetization | Paid | — |
| Size | 90 MB | 40 MB |
| Requires iOS | **16.6** | 18.4 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [airWORK aviation media UG](https://appshunter.io/developer/1055282750) | [Navtech Software](https://appshunter.io/developer/355517263) |

## What reviewers say

### smartCHECK

[App page](https://appshunter.io/ios/app/smartcheck/id1055282751)

This app acts as a digital copilot for airplane crews, reading checklists aloud and offering automatic altitude callouts. It also includes an integrated document browser for manuals and a notepad, along with tools like an oil log and fuel switch timer.

**Highlights:** Synthetic voice checklist reading, Automatic altitude callouts, Integrated document browser, Customizable checklists, Oil log and fuel timer, Night mode

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| smartCHECK Weather | $2.99 | per month |
| smartCHECK Pro | $3.99 | per month |


### iStreams North Sea (E)

[App page](https://appshunter.io/ios/app/istreams-north-sea-e/id1454493881)

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock Set tool | $1.99 | one-time |
| 1 Month Subscription | $2.99 | one-time |
| 6 Month subscription | $2.99 | one-time |
| Unlock CTS tool | $3.99 | one-time |
| 1 Year subscription | $5.99 | one-time |


## Frequently asked questions

### Is smartCHECK free?

smartCHECK costs $13.99, and also offers in-app purchases.

### Is iStreams North Sea (E) free?

iStreams North Sea (E) is free to download, with in-app purchases available.

### Do smartCHECK or iStreams North Sea (E) have ads?

Neither smartCHECK nor iStreams North Sea (E) shows ads.

### Which is updated more often, smartCHECK or iStreams North Sea (E)?

smartCHECK ships an update every 3 weeks, and iStreams North Sea (E) every 2 months. Most recently, smartCHECK was updated on October 19, 2026 and iStreams North Sea (E) on October 29, 2026.

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