OnAir Client vs Crosscheck
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
OnAir Client
Manage and play multimedia content from local storage or online sources like IPTV and OTT. Supports various online content types and local media formats. Can also scan QR codes for content sharing and portal import from compatible devices.
- Play IPTV, OTT, and STB content
- Supports M3U Playlist URL, Xtream API
- Plays local audio, video, and pictures
- QR code scanning for content sharing
- Import portals via QR code
- Supports M3U8 streaming links
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OnAir Client is used manage and play all sorts of multimedia content from your local store or from any online source like IPTV ( Internet Protocol TV), OTT (Over The Top) and STB (Set Top Box). The online content types include M3U Playlist URL, Xtream API, Stalker / MAG, M3U8 Streaming Link. Local Media Includes Audio, Video and Pictures in All Formates. Moreover it can also Scan QR Code from OnAir G3 Application that comes with Optic STBs and used as a supportive client to share contact being played on your TV by scanning the QR Code presented on your tv screen. In addition to that, you can also Import Portals that are already logged in to your Optic STBs to your smartphone just by scanning a QR code that is displayed in Portal History menu of OnAir G3. Desclaimer: All the links which are being played in the app are being used by users on their free will and no rights to read, add, update, delete data from the player. Users are using the links on their free will. The app doesn't include any url or content in itself.
Crosscheck
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Two lines of trigonometry, in the runup area, with the ATIS still in your head. Crosscheck does them and draws the answer. Type the runway and the wind. You get the crosswind and the head or tailwind, and — the part that matters — the runway drawn with the wind across it at the real angle, so which side it is on is unmistakable. Knowing the number is easy. Picturing the side wrong under pressure is what puts an aeroplane in the grass. THE GUST IS THE NUMBER THAT DECIDES Plan on the steady wind and land in the gust and you planned the wrong number. The headline figure is the gust; the steady one is underneath it, because you brief both. IT WORKS THE OTHER END WITHOUT BEING ASKED Every wind is computed for the reciprocal too. If that end is the better one — a headwind instead of a tailwind, or materially less across — the app says so with the numbers already on it, and swaps with one tap. That is the question you actually have when a crosswind is marginal, and no other calculator answers it. GRADED AGAINST YOUR FIGURE, NOT OURS You type the demonstrated crosswind from your own POH. The app compares your number to the computed component and tells you where you sit — within it, close to it, or past it — and it names which figure it means, the crosswind or the tailwind. There is no built-in aircraft database, on purpose. Demonstrated crosswind varies by model, by year and sometimes by modification, and a figure that is close but wrong is worse than no figure at all. For most light aircraft the demonstrated crosswind is a DEMONSTRATED value — the strongest crosswind a test pilot happened to find during certification — not a structural or regulatory limit. Some types are placarded with a real limit. The app says so where you enter it. DENSITY ALTITUDE TOO Field elevation, altimeter setting and OAT give you pressure altitude and density altitude, using the standard approximation printed in POH supplements. AND THE CLOCK RULE, HONESTLY The mental shortcut you were taught — angle off over sixty, times the wind — shown against the real figure at every angle, so you can see exactly where it starts over-reading. At 60° it says the full wind when the answer is 87%. WHAT IT IS NOT A planning aid, not an authority, and not a source of weather. It has no network connection of any kind: it does not fetch METARs, and the wind it uses is the wind you typed. Verify against the current ATIS or ASOS. It does not compute weight and balance, takeoff or landing distance, or performance of any kind. The pilot in command decides. Works offline. No account.
Screenshots
Verdict
The clearest difference is price: OnAir Client at Free against Crosscheck's $4.99. OnAir Client also leads on iOS requirement (15.0 vs 17.0). Crosscheck's advantage is in-app purchases (none vs 4) and chart position (#134 vs unranked). On update cadence, ads and device support 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
OnAir Client is free to download; Crosscheck costs $4.99 up front. OnAir Client sells 4 in-app purchases, starting at $1.99 per month. Crosscheck asks for nothing beyond the download.
OnAir Client ships an update fortnightly, Crosscheck weekly. The most recent releases landed on November 3, 2026 and November 6, 2026 respectively.
| Parameter | OnAir Client | Crosscheck |
|---|---|---|
| Price | Free — better | $4.99 |
| Rating | 4.5 (6 ratings) — better | — |
| Positive reviews | 76.9% of reviews | — |
| Number of ratings | 6 — better | — |
| Update frequency | Fortnightly | Weekly — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Best chart rank | — | #134 — better |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 15.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 77 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Mubbsher Abbas | Yaniv van der Stigchel |
In-app purchases
OnAir Client
- 1 Mobile Device Monthly$1.991 Month
- 1 Mobile + 2 TV Monthly$2.991 Month
- 1 Mobile Yearly$4.991 Year
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- 1 Mobile + 2 TV Devices Yearly$8.991 Year
Crosscheck
No in-app purchases









