Simple Xwind vs Q400
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Simple Xwind
Quickly calculate crosswind and tailwind limits during flight. This app provides fast, precise calculations without clutter or unnecessary graphics, designed for immediate use when conditions change unexpectedly.
- Quick crosswind calculations
- Precise tailwind limits
- Fast and reliable
- Simple, clutter-free interface
- Designed for speed
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You're on short final when the tower provides updated winds. The conditions have changed more than expected, and there’s no time for mental math to determine if you're within crosswind and tailwind limits. Xwind gives you quick and precise calculations when you need them most. No clutter, no unnecessary graphics—just a fast, reliable crosswind calculator built for ease of use. Unlike other bulky apps, Xwind is designed for speed and simplicity, so you can get the data you need instantly. No extra clicks, no distractions—just numbers.
Q400
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Fast, accurate takeoff and landing performance for the DHC-8-402 (Q400) — built by pilots, for pilots. Q400 Performance Calculator turns AFM tables into instant results on the flight deck. Enter your conditions and get V-speeds, weight limits, and runway-specific numbers in seconds — no paper charts, no guesswork. KEY FEATURES • Takeoff — V1/VR/V2, max weights and limit codes for dry, wet, tailwind, MEL and contaminated runway conditions • Reduced (assumed-temperature) takeoff with torque selection • Landing — Vref, Vtarget, Vmax, go-around speeds with wind and contamination corrections • Cruise — LRC, ISC, HSC, MCR plus single-engine and holding performance • Missed approach climb gradients • De-icing / icing speed corrections applied automatically • Built-in airport and runway database — elevation, length, slope, shift Designed around a clean cockpit-style interface: high-contrast values, dark display, and a layout that reads at a glance under any lighting. This app is a planning aid. Always cross-check results against the approved Aircraft Flight Manual and your operator's procedures. The pilot in command remains responsible for all performance decisions. SUBSCRIPTION Q400 Performance Calculator is available with a 7-day free trial, then $5/month or $30/year. Your subscription unlocks all calculators and runway data. Payment is charged to your Apple ID and auto-renews unless cancelled at least 24 hours before the end of the current period. Terms of Use (EULA): https://starbuck-dev.github.io/Q400Performance/terms/ Privacy Policy: https://starbuck-dev.github.io/Q400Performance/privacy/ Privacy first — no account required, no personal data collected, no tracking. Calculate with confidence. Download Q400 Performance Calculator today.
Screenshots
Verdict
The clearest difference is in-app purchases: Simple Xwind at none against Q400's 2. Simple Xwind also leads on iOS requirement (15.6 vs 18.6). On price, 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
Both are free to download. Q400 sells 2 in-app purchases, starting at $4.99 per month. Simple Xwind asks for nothing beyond the download.
| Parameter | Simple Xwind | Q400 |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | — |
| Positive reviews | 66.7% of reviews | — |
| Number of ratings | 2 — better | — |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.6 — better | 18.6 |
| Further details — not scored | ||
| Size | 1 MB | 10 MB |
| Age rating | 4+ | 4+ |
| Developer | Alex Deutz | MacLaren's Studio |
In-app purchases
Simple Xwind
No in-app purchases
Q400
- Monthly7 Days trial$4.991 Month
- Annual7 Days trial$29.991 Year
Questions
Is Simple Xwind free?
Is Q400 free?
Do Simple Xwind or Q400 have ads?
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