SkySolve vs WorldRoulette!
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SkySolve
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Pilot students need to get familiar with unit conversions (for example ft to m or kts to km/h) and experienced pilots should keep up their practice in converting units quickly in-flight to ensure a save flight. Get peace of mind with SkySolve: Mental math and unit conversion training at your fingertips, specifically made for pilots. SkySolve currently offers the following exercise types: - Addition, Subtraction, Multiplication and Division - Feet to Meters - Flight Level to Meters - Knots to km/h - Nautical Miles to km - Opposite Heading calculation - 3 Times Table (as it's key in order to get very quick in converting feet to meters) Additional Features: - Automatic answer submission: Once your answer is entered correctly, the app accepts it and jumps to the next exercise, without the need of pressing "enter" or "submit". This makes your practice more efficient. - See your progress by collecting points with every correct answer. The points are stored locally on your device and will cumulate over time. - SkySolve features a lock screen widget that you can use as a quick access button from your home screen.
WorldRoulette!
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World Map Roulette is a geography learning app that uses an interactive world map roulette system. Spin the roulette on a beautiful world map and learn in detail about randomly selected countries. This is a new type of learning tool that allows you to naturally memorize world geography while having fun. Key Features Roulette Function The roulette dynamically rotates on the world map and randomly selects countries. Smooth animations and effects create excitement leading up to the result announcement. Detailed Map Display Selected countries are displayed on actual maps using Apple MapKit, allowing you to confirm accurate locations and topography. By displaying country flags and names together, it provides a visually memorable learning experience. Intuitive Map Operation In addition to the roulette function, you can instantly check detailed information about any country by directly tapping it on the world map. You can explore countries of interest at your own pace. Blind Mode Enjoy quiz-style learning where you spin the roulette with country names hidden and guess the country name based only on the flag and map shape. You can confirm answers by tapping, training both memory and geographical knowledge. Flexible Settings System You can select or deselect countries in bulk by continent, or freely configure individual countries. Efficient learning is possible by customizing according to the regions you want to study and difficulty level.
Screenshots
Verdict
The clearest difference is ads: SkySolve at none against WorldRoulette!'s shown. On price, in-app purchases, device support and iOS requirement 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. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | SkySolve | WorldRoulette! |
|---|---|---|
| Price | Free | Free |
| Update frequency | — | Fortnightly |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.6 | 17.0 — better |
| Further details — not scored | ||
| Size | 2 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | Jonas Philipp Haru Andres Vetsch* | yuya kanbetsunawa |
In-app purchases
SkySolve
No in-app purchases
WorldRoulette!
No in-app purchases









