Yes, you can use Google Opinion Rewards to buy Robux. The free Google app pays you small amounts of Google Play credit for answering short surveys, and on Android you can spend that credit on Robux inside the Roblox app. It’s slow, and the app rate gives fewer Robux per dollar than the website. But the credit is free, so it’s still a good deal.
I like this method because it takes almost no effort. You answer a quick survey when your phone pings you, and that’s it. Here’s how to set it up and get the most out of it.
What Google Opinion Rewards is
Google Opinion Rewards is an official app made by Google. Google sends you short surveys, often just a few questions about places you’ve been, ads you’ve seen, or products you use. Each finished survey adds a little to your Google Play balance.
A few honest things to know up front:
- The amounts are small. Usually a few cents up to under a dollar per survey. Prices are in USD here and local amounts vary by country.
- Surveys are irregular. Some weeks you’ll get a few, some weeks none. There’s no way to force more.
- Credit can expire. Users report that unused credit can expire, so spend it now and then instead of letting it sit forever.
Setting it up on Android
- Open the Google Play Store and search for Google Opinion Rewards. Make sure the developer is Google.
- Install it and sign in with the same Google account you use for the Play Store.
- Answer the short setup questions. Answer honestly.
- Turn on notifications so you see new surveys quickly. Some don’t stay open long.
- Check your balance in the app, or in the Play Store under Payments.
Buying Robux with your Play balance
Once you’ve built up enough credit to cover a Robux bundle, it’s simple:
- Open the Roblox app on your Android phone.
- Tap the Robux icon and pick a bundle your balance can cover.
- At checkout, choose your Google Play balance as the payment method.
- Confirm. The Robux show up on your account right away, on every device you use.
Pick a bundle your balance fully covers, so you don’t end up paying extra with your own card at the app rate.
The honest catch: the app rate
Buying Robux inside the mobile app gives fewer Robux per dollar than buying on the Roblox website, because app stores take a cut of about 30%. As a rough example, $9.99 gets you about 1,000 Robux on the web but about 800 in the app. Bundles were reworked in 2026, so check the numbers on your screen.
So why bother? Because Play balance only works through Google Play. You can’t spend it on the Roblox website. And since the credit cost you nothing, getting slightly fewer Robux is still a win. If you’re paying with your own card, though, the website is the better deal. Our guide to the cheapest way to buy Robux explains why.
Making the credit go further
Small balances feel slow, so a little planning helps. Pick one Robux bundle as your target and only spend when you reach it. Don’t use the credit on random apps in between, or you’ll never get there. Also check your balance once a week. It’s a quick way to see if surveys have dried up for a while, which is normal and usually picks back up later.
What about iPhone users?
On iPhone, Google Opinion Rewards works differently. In some regions it pays PayPal cash instead of store credit. That money doesn’t go straight into Robux, so it’s a less direct route. If you’re on iPhone, Microsoft Rewards for Robux might suit you better, since it gives actual Roblox card codes in some countries.
Mistakes to avoid
- Installing fake copies. Only download the app made by Google from the official Play Store. Lookalike apps promising “Robux surveys” are often scams.
- Letting credit sit too long. Users report expiring credit. Spend it every few months at least.
- Rushing through surveys. Read each question and answer honestly. It’s your real opinion Google is paying for.
- Using the wrong Google account. The balance belongs to the account you signed into the app with. It must match the Play Store account on your phone.
- Expecting a lot. This is a few dollars over a long time for most people. Nice bonus, not a paycheck.
FAQ
Is Google Opinion Rewards safe?
Yes, it’s an official Google app. Just make sure you install the real one from Google, not a copy with a similar name.
How much can I earn for Robux?
Not a lot quickly. Surveys pay small amounts and come irregularly. Over time, you can usually save up for a small Robux bundle.
Can I use Play balance on the Roblox website?
No. Google Play balance only works inside apps from the Play Store, so you need to buy through the Roblox Android app.
What other free methods are there?
Microsoft Rewards and earning as a creator are the main ones. See our full guide to free Robux, the real and safe way.
Bottom line
Google Opinion Rewards is an easy, low effort way to pick up free Play credit on Android and turn it into Robux. You’ll get fewer Robux than on the website, but you paid nothing, so it doesn’t really matter. Answer surveys honestly, spend your balance before it sits too long, and only buy through the official Roblox app. For anything Roblox account related, the Roblox Help Center is the place to check.
This site is an independent guide and is not affiliated with Roblox Corporation. Prices and programs can change, so always check the official Roblox website before buying.