Certainly, using cashback apps is a smart way to maximize savings. Here are the top 10 cashback apps:

1. **Rakuten (formerly Ebates)**: Provides cashback for online and in-store purchases at over 2,500 stores. There are also hot deals and promotions available all the time.

2. **Swagbucks**: This is more than a cashback app. You can also earn points, redeemable for cash or gift cards, by completing surveys, watching videos, and searching the web.

3. **Ibotta**: A great app for grocery shopping that allows you to earn cashback on purchases from a wide variety of grocery stores and retailers.

4. **Fetch Rewards**: Simply scan any grocery receipt, and it will give you points towards hundreds of popular products. You can then redeem your points for gift cards.

5. **TopCashback**: Offers 100% cashback on purchases at over 4,400 stores, which is a very large number for cashback apps.

6. **Shopkick**: Gives you points (or 'kicks') for walk-ins, scanning certain products, making purchases, or shopping online. Collect these kicks to redeem for gift cards.

7. **Dosh**: Automatically gives cashback when you shop, eat, travel, and more at participating businesses. No need to scan receipts.

8. **Receipt Hog**: Here you earn 'coins' for scanning in grocery receipts, which you can then exchange for cash or gift cards.

9. **Drop**: Simply link your credit or debit card and you  ll earn points at your favorite retailers which can be redeemed for gift cards.

10. **Honey**: Not just a coupon app, it also gives you cashback on your online purchases.

Remember, to maximize your savings, try to combine these apps with store sales, coupons, and credit card rewards when possible. Be aware of the terms and conditions so you know what to expect.

Shopkick awards points, or 'kicks', to users for a variety of activities. Here's the breakdown:

1. **Walk-Ins**: When you walk into specific stores that have partnered with Shopkick, you can earn kicks. The number of kicks varies by store and sometimes there could be bonus walk-in kicks during certain promotional periods.

2. **Scanning Products**: Some items that are listed in the app can earn you kicks just for scanning their barcodes while you're in store, even if you don't buy them. Again, the number of kicks for each item can vary.

3. **Purchases**: You can earn kicks for purchasing certain items. These tend to be higher in number compared to walk-ins or scans. The amount of kicks you get usually depends on the cost of the item and the current promotions running.

4. **Receipt Scanning**: When you purchase certain items, you can earn kicks by scanning your receipt into the Shopkick app. The number of kicks depends on the items and the promotions.

5. **Online Shopping**: Some kicks can be earned by shopping online through the Shopkick app with their partner retailers. How many you earn can vary greatly depending on what you buy and the current deals.

6. **Watching Videos**: There are small ads in the app that you can get kicks from after watching. The number tends to be lower, but they are quick and easy to earn.

All in all, the number of kicks you earn from each activity can vary greatly depending on the store, promotion, and the type of activity. Always check the Shopkick app for the most up-to-date information.

Yes, you certainly can! Shopkick sometimes has special events or promotional periods during which they offer bonus kicks for walk-ins at certain stores. The details of these bonus kicks opportunities can vary, both in terms of the amount of kicks awarded and the stores where they're offered. 

The app should notify you when these bonus opportunities or promotional events are taking place. Also, it's worth checking the app regularly for updates and new opportunities. Please note that these promotions might be limited and can change quickly, so make sure to take advantage of them when they're available.

Absolutely! Many large retail chains that have partnerships with Shopkick offer bonus kicks during promotional periods. 

One of the most prominent examples is **Walmart**. Walmart often has bonus kicks for both walk-ins and product scans, especially during holidays or big shopping events.

Another good example is **Target**. They periodically offer promotional walk-in kicks as well as bonus kicks for purchases of specific items.

Please remember to frequently check your Shopkick app as these offers can vary and change quickly. And also, promotional offers might be different depending on your location.

Yes, there are many other retail chains that offer bonus kicks during promotional periods. This includes chains such as:

1. **Best Buy**: Known for offering bonus kicks for walk-ins, and often on specific electronics scanning and purchases.

2. **American Eagle**: Has been known to offer extra kicks during certain promotional times for both walk-ins and purchases.

3. **Macy's**: Particularly during holiday seasons and sales events, Macy's often offers extra kicks for walk-ins, scanning items, and making purchases.

4. **Marshalls**: This retailer and others in its family (TJ Maxx, HomeGoods) often offer promotional bonus walk-in kicks.

5. **Ulta Beauty**: Typically offers extra kicks for scanning beauty products and for making purchases during promotional periods.

Remember, the offers can vary, and change routinely so it's always good practice to check the Shopkick app frequently for the latest updates on where and how you can earn bonus kicks.