Spin vs Extended Rest Operations
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Spin
Calculate critical aviation weather data including wind components, temperature conversions, altitude calculations, and airspeed. Designed for pilots with an intuitive, one-handed interface and instant results.
- Wind component calculation (headwind, tailwind, crosswind)
- Temperature conversions and wind chill factor
- Altitude calculations (pressure, density)
- Airspeed calculator (TAS, Mach, speed of sound)
- Customizable units and caution thresholds
- One-handed, reel-based interface
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Featured in Flying Magazine July 2012 "8 Great Aviation Apps"! Reviewed favorably on AOPA Flight Planning App Roulette 20 Nov 2012 Designed by an airline pilot, Spin-a-Wind calculates wind components, temperatures, altitudes and airspeeds. The headwind (tailwind) and crosswind components are based on the runway, and reported wind direction and speed. If the airport has parallel runways, using the runway number closest to the actual magnetic heading of the runway gives the most accurate results. The result is also displayed graphically. Crosswind and tailwind components are rounded up, while the headwind component is rounded down, making sure that all results depict the worst case. To instantly change to the opposite (reciprocal) runway, tap the runway number at the far end. Spinning reels are used to make your selections. No keyboard is necessary. Results of calculations are displayed instantly when the last reel stops. The app was designed for one handed use, and ease of operation. The second item on the tab bar links you to a page with temperature conversions. Enter the temperature in degrees Celsius, and instantly the Fahrenheit conversion is displayed, as well as the chill factor in °C and °F using the NWS Wind Chill index used by the U.S. and Canada. (note: the NWS Wind Chill index is not valid for greater than 50°F or less than 3 mph of wind. Relative Humidity and Heat Stress Index are calculated using the entered Dewpoint Temperature. The third item deals with altitudes, metric, pressure altitude and density altitude. Density altitude is diaplayed for assumed dry air, and also moist air (based upon the temp/dewpoint spread entered in the temperature page. The fourth item is the Airspeed Calculator. It uses equations for TAS, mach, and speed of sound. The equations used will be accurate even for the higher speeds of jet aircraft. The fifth item on the tab bar moves the view to the settings page. Here, you can set your display speed units (kts, mph, kph) and pressure units(inHg, hPa, mb) as well as the threshold points where the wind results turn amber (caution zone) and red (aircraft limits).
Extended Rest Operations
Easily calculate inflight rest periods for long-haul flights. Features multiple rest distribution options and flight data input methods. Includes a round-up feature for clear schedules and optional alarms for crew changes.
- Calculate inflight rest periods
- Over 10 rest distributions
- Multiple flight data input methods
- Round-up feature for schedules
- Wake-up alarms for crew changes
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Good morning, Crew! Flying long-haul? We’ve got you covered. Calculate your inflight rest periods in just a few taps. Choose from over 10 rest distributions and 3 ways to input your flight data. Use the round-up feature to get a friendly, easy-to-read schedule—your crew-friendly assistant in the sky. The app can even wake you at each crew change, so you never miss your rest. Whether you’re a Cruise Relief Pilot, Cruise Captain, or any other rank, this app works for you. Cabin crew? One, two, or three services—you deserve your rest too. Built with input from dozens of pilots and cabin crew, this is the #1 app for inflight rest management. Simple, reliable, and tailored to the skies.
Screenshots
Verdict
The clearest difference is update cadence: Extended Rest Operations at every 3 weeks against Spin's every 3 months. Extended Rest Operations also leads on chart position (#178 vs unranked) and price ($0.99 vs $2.99). Spin's advantage is review sentiment (86% vs 74%) and iOS requirement (6.0 vs 15.6). On rating, ratings volume, ads and in-app purchases 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
Spin costs $2.99 and Extended Rest Operations $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Spin holds the better App Store score, 4.6 against 4.4. Both are backed by a comparable volume of ratings — 44 and 65 respectively. Written reviews point the same way: 86% of Spin's written reviews are positive against 74% of Extended Rest Operations's.
Spin ships an update every 3 months, Extended Rest Operations every 3 weeks. The most recent releases landed on September 25, 2026 and September 24, 2026 respectively.
| Parameter | Spin | Extended Rest Operations |
|---|---|---|
| Price | $2.99 | $0.99 — better |
| Rating | 4.6 (44 ratings) — better | 4.4 (65 ratings) |
| Positive reviews | 86.1% of reviews — better | 73.9% of reviews |
| Number of ratings | 44 | 65 — better |
| Update frequency | Every 3 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Best chart rank | — | #178 — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 6.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 10 MB | 10 MB |
| Age rating | 4+ | 4+ |
| Developer | Len Robinson | Santiago Borja Lopez |
Customer experience
Spin
Extended Rest Operations
In-app purchases
Spin
No in-app purchases
Extended Rest Operations
No in-app purchases









