KOil vs Smithsonian
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
KOil
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KOil App is the first Engineering applications for Oil Spill Dispersion and Trajectory in Arabian Gulf water by smart mobile device. The use of numerical modeling in oil spill incidents is a well established technique that has proven to provide cost-effective and reasonable estimates of oil surface drift. Good predictability of such models depends highly on the quality of the input data of the incident and on the model calibration effort. This App presents the results of simulating oil spill trajectory in the Kuwait Water and Arabian Gulf water on smart devices [IPhone/IPad]. This App employed 2-D hydrodynamic by KGulf model [Al-Salem 2009] combined with oil spill model [KOil Model (Al-Salem 2012)]. The performance of the hydrodynamic model was tested against measurements of tidal fluctuation and sea currents at selected locations for more information on validation of the KGulf Model go to http://www.hceatkuwait.net/web_pas/web-KGulf/KGulf_report.pdf. The Oil Spill analysis (KOil App) was setup using the flow field produced from the hydrodynamic simulation and its performance was further validated against documented events like Al-Shuabaa Kuwait Aug 2, 2010 oil spill. The comparison of the actual and simulated oil spill drift was found reasonably acceptable allowing for further application in risk assessment in the entire Kuwait Water and Arabian Gulf as well. For information on KOil model concept and validation goto [https://www.researchgate.net/publication/268386738_Interactive_Oil_Spill_Model_for_Kuwaiti_Territorial_Waters_by_IPhone_Technology] In this approach, the a Lagrrangian discrete of moving parcel algorithm is used. In this algorithm, the oil slick is viewed as a large ensemble of small parcels. The movement of each parcel is followed and recorded as functions of time relative to a reference grid system fixed in space. In the Lagrangian discrete- parcel algorithm, the oil slick is divided into a large number of equal masses. These parcels are introduced into the system in case of instantaneous spill at the spill site at the same time. Each parcel is then allowed to move with the drift velocity. The drift velocity is computed as the weighted velocity of current and wind. The component of velocity due to diffusion of oil slick is calculated by random walk analysis. The computation for oil parcels calculated numerically by integrating the drift velocity in each time interval. After the advection and diffusion calculations are completed for the current time step, oil parcels in the slick are further spread according to the spreading laws. The mass in each parcel is also reduced by an equal amount determined from evaporation rate. KOil app can share Predicted result by Email with attachment file and images by WhatsApp. For more Information on the KOil model go to website at http://www.hceatkuwait.net/request/KOil_report.pdf" video presentation on the KOil app go to website at http://www.hceatkuwait.net/request/Data_iphone.htm" The internet Version: http://www.hceatkuwait.net/web-OilSpil/KOil2/koilmain.aspx
Smithsonian
Explore the solar system with interactive games and animations. Learn fascinating facts about planets, moons, and the asteroid belt. Designed for curious young minds to introduce astronomy basics.
- Fascinating facts about the solar system
- Mini games like Space Winter Rush
- Interactive activities
- Educational animations
- Read to Me text
- Collect planet badges
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Join us on an exciting voyage through the solar system! Play, touch, read. and learn facts about the 8 planets in our solar system in this new app from The ©Smithsonian and PlayDate Digital. Designed for curious minds, this app features brilliantly illustrated animations which are sure to engage and entertain. Why is Mars called the Red Planet? Which is the brightest Planet? How many moons does Neptune have? What is the Asteroid Belt? Explore Planets, learn facts, and play games as you rocket through the solar system. Your space enthusiast will love learning all about the wonders of space and the universe. The mini games reinforce the learnings and interactive activities will keep kids engaged. Features: • Lots of fascinating facts about our solar system, its planets, and more! • Featuring mini games including Space Winter Rush, Comet Ceasefire, Solar System Sorting, Gas Planets and more! • Over 10 other interactive activities related to your space adventure. • Educational content and animations will entertain and engage while teaching simple astronomy basics. • ‘Read to Me’ text • Collect solar system and planet badges as you complete each level Planets and the Solar System from ©Smithsonian Kids is designed to deliver on these Learning Goals: • STEM: Introduce young learners to astronomy and science methods. • STEM: Expand young learners' curiosity and knowledge of the world around them. • Counting and Quantifying: Identify and organize groups of objects logically. • Visual Discrimination: Distinguish between different shapes, sizes, colors. • Visual Memory: Remembering and recalling visual information. • Color Recognition and Differentiation: Identifying and naming colors. • Shape Recognition and Classification: Identifying objects based on different shapes. ABOUT THE SMITHSONIAN The ©Smithsonian is the world’s largest museum and research complex, dedicated to public education, national service, and scholarship in the arts, ©Smithsonian sciences, and history. The name of the ©Smithsonian Institution and the sunburst logo are registered trademarks of the ©Smithsonian Institution. For more information, please visit www.si.edu ABOUT PLAYDATE DIGITAL PlayDate Digital Inc. is a publisher of high-quality, interactive, mobile educational software for children. PlayDate Digital's products nurture children's emerging literacy and creativity skills by turning digital screens into engaging experiences. PlayDate Digital content is built in partnership with some of the world's most trusted global brands for kids. Visit us: playdatedigital.com Like us: facebook.com/playdatedigital Follow us: @playdatedigital Watch all our app trailers: youtube.com/PlayDateDigital1 HAVE QUESTIONS? We'd love to hear from you! Your questions suggestions and comments are always welcome. Contact us 24/7 at info@playdatedigital.com
Screenshots
Verdict
The clearest difference is in-app purchases: KOil at none against Smithsonian's 2. Smithsonian's advantage is update cadence (every 3 months vs every 38 months) and device support (3 vs 1). On price and ads 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. Smithsonian sells 2 one-off in-app purchases. KOil asks for nothing beyond the download.
KOil ships an update every 38 months, Smithsonian every 3 months. The most recent releases landed on September 29, 2026 and October 9, 2026 respectively.
| Parameter | KOil | Smithsonian |
|---|---|---|
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| Update frequency | Every 38 months | Every 3 months — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 16.6 | 13.0 — better |
| Further details — not scored | ||
| Size | 40 MB | 285 MB |
| Age rating | 4+ | 4+ |
| Developer | Khaled Alsalem | PlayDate Digital |
In-app purchases
KOil
No in-app purchases
Smithsonian
- Remove Ads$1.99
- Buy 5 Planets$2.99









