Comparison

Spin vs 禹州行

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • 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
Features
Read full description

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).

About

禹州行

Features
Read full description

这是一款集新闻浏览、公交查询、查看周边等功能于一体的智能软件,可以满足我们日常出行需求,方便我们乘坐公交车,在坐车的同时我们还可以浏览本市的新闻。 主要功能: 1、本市新闻概览 2、公交查询,候车详细信息,距离几站,多少分钟,方便我们等车坐车 3.内置上车提醒下车提醒功能 4.为用户提供可行的公交换乘方案

Screenshots

Spin4 screens
禹州行1 screens

Verdict

The call

The clearest difference is review sentiment: Spin at 86% against 禹州行's 20%. Spin also leads on iOS requirement (6.0 vs 8.0). 禹州行's advantage is price (Free vs $2.99). On update cadence, ads, in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

禹州行 is free to download; Spin costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on October 23, 2026 and October 26, 2026 respectively.

Scorecard3 real differences · 7 level
Spin versus 禹州行: the parameters behind the verdict, then further details
ParameterSpin禹州行
Price$2.99Free — better
Rating4.6 (44 ratings) — better—
Positive reviews86.1% of reviews — better20.0% of reviews
Number of ratings44 — better—
Update frequencyEvery 3 monthsEvery 3 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS6.0 — better8.0
Further details — not scored
Size10 MB38 MB
Age rating4+4+
DeveloperLen RobinsonZhengzhou Tiamaes Technology Co., Ltd

Customer experience

Spin

All ratings44 ratings
Positive90.9%
Neutral2.3%
Negative6.8%
Written reviews36 reviews
Positive86.1%
Neutral0.0%
Negative13.9%

禹州行

Written reviews5 reviews
Positive20.0%
Neutral40.0%
Negative40.0%

In-app purchases

None

Spin

No in-app purchases

None

禹州行

No in-app purchases

Questions

Is Spin free?
Spin costs $2.99, with no in-app purchases.
Is 禹州行 free?
禹州行 is free to download, with no in-app purchases.
Do Spin or 禹州行 have ads?
Neither Spin nor 禹州行 shows ads.
Which is updated more often, Spin or 禹州行?
Spin ships an update every 3 months, and 禹州行 every 3 months. Most recently, Spin was updated on October 23, 2026 and 禹州行 on October 26, 2026.

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