Answer 1. About app marketing, app store optimization is a good way. App Store Optimization (ASO) is the SEO of the App world, the more you can do to optimize your App store listing page, the better your App will rank in the App stores – making it easier for potential users to discover you. You can do it following these aspects:
You should also monitor keyword ranking regularly. Like with websites, keep an eye on the rankings of your keywords, as well as any new keywords that might pop up.
You can also get positive app reviews to increase the download rates, because 95% users will take the app reviews as one of the most important reference factors to judge the app, and most people prefer to download an app which has much more positive reviews.
Answer 2. You can increase the profit for the drivers, or some rewards for those drivers who get a certain number of orders.
Hope these methods are useful to you.
Here I will share some marketing strategies for you.
Design an eye-catching icon
An eye-catching icon often leaves a good impression on users. A beautiful icon will attract users to download your app. Therefore, make the icons of the apps as attractive and distinctive as possible.
Create a eye-catching title
App title is the first thing users will have a look at. Create a eye-catching title to attractive users download your app. But remember that the title should not be too long, put the keywords in the subtitle to help user search easier.
Build a website
To better market apps, you can build a website which introduces more information about the apps, update the latest news about your apps, and also build a platform for users and your app. Communicate with your users, maintain the relationship with your users, and attract more new users.
Promote apps on social media
Social media plays a key role in marketing apps. After you built a website, you need to take full advantages of social media to popularize it. You can build pages and write advertorials on Facebook, Twitter and other social medias to let people visit and scan the pages, which help you reach the purpose of promoting, build your own brand, and better communicate with your users. Furthermore, you can advertise on these social medias to propagandize your apps.
Update your apps
Keep improving the quality of your apps and to bring convenience for your customers. Also, the tastes of users are changing rapidly. To address that issue, constantly updating your apps is inevitable.
Buy App Reviews
For users themselves, it is difficult to ask them to write reviews for your app, especially positive reviews. However, the number of app downloads depends on app reviews much. Besides, you might receive some negative reviews from users which might affect the app promotion. Therefore, you have to find new ways to buy app reviews.
Run a contest
Running a contest, invite users to finish some tasks, and award these who obtain a relatively high marks in accomplishing the tasks, which is quite useful in promoting apps.