InboxDollars vs Prolific: One Guarantees an Hourly Floor, One Cannot Agree With Itself

These two are both sold as "get paid for surveys", and they are not the same product. One is a rewards site with many small ways to earn. The other is a research marketplace with a rule about what your hour is worth.

Only one of them puts a floor under your hour

Prolific makes researchers pay participants at least £6.00/$8.00 an hour, and recommends £9.00/$12.00. That is a rule enforced on the people posting studies, not a promise about your total earnings. You still have to find a study you qualify for. But the rate per hour of work is not left to chance.

InboxDollars publishes a range instead: $0.50 to $5.00 for 3 to 25 minutes. Do the arithmetic at both ends and you get anywhere from $1.20 an hour to $100 an hour, which is another way of saying the number carries no information. There is no stated average, no floor, and no published rule binding anyone to a rate.

This is the single biggest difference between them and it is not the one either homepage leads with.

InboxDollars cannot agree with itself on when you can leave

The help centre, updated 12 June 2025, says $15.00 for a first payment request and $10.00 after that. The legal payment terms, updated 24 July 2025, say $30.00.

Both pages are live. Neither points at the other. The later date is on the higher number, which is suggestive but proves nothing about which one is enforced on an account today.

For a new user this is the whole question, because it is the difference between reaching payout in one month or three. Prolific's answer is £6.00/$6.00, combined across your GBP and USD balances, stated in one place.

Prolific is not immune to this either, and it is worth being even-handed: its researcher help page says submissions approve automatically on day 21 just after midnight GMT, while its participant help page says up to 22 days. That is a smaller gap on a smaller question, but it is the same failure, and it is recorded here for the same reason.

Three ways out of one, one way out of many

InboxDollars pays by gift card, PayPal or prepaid Visa, and every gift card is virtual. There is no payout fee: the $3 processing fee was removed effective 7 April 2020.

Prolific pays to PayPal and nothing else, routed through Hyperwallet. If you do not have PayPal, or PayPal does not operate properly where you are, Prolific has no second route. It also does not publish a cash-out fee, which is a gap rather than a promise of zero.

Prolific adds a throttle InboxDollars has no equivalent to: 72 hours between cash-out requests until four cash-outs are behind you, and once every 24 hours after that.

The country question decides it for most readers

InboxDollars is United States only, all 50 states, 18 and over. For most of the world that ends the comparison.

Prolific lists 52 countries on its participation eligibility list. It also has a separate list of 40 countries for identity verification, and those two lists are not the same list. Verification sits at step three of signup, after email and phone, so a country that qualifies to participate but is missing from the verification list is a problem you discover part-way through joining, not before.

What each one takes from the other side

Prolific publishes its researcher platform fee: 42.8% for corporate customers, 33.3% for academic and non-profit, charged on top of what participants are paid. That is unusually open. It also tells you where your money comes from and how much the middle costs.

InboxDollars publishes nothing equivalent, which is normal for a rewards site funded by advertisers rather than by named customers. What it does publish is two different totals for what it has paid members since 2000: over $57 million on its Google Play listing and over $70 million on its App Store listing. Same company, same period, two numbers, thirteen million apart.

Tax, and the thing people forget

InboxDollars requires tax details above $300 in a calendar year and files a 1099 at $600. That is a US rule and a real one. Nobody plans for it when they sign up for a $5.00 profile-survey bonus, and it arrives anyway if you are good at this.

Prolific's participants are spread across 52 countries, so it makes no equivalent single statement, and your own country's rules apply.

Which one is for you

If you are in the United States, want several ways to be paid, and are happy to be paid in small pieces for many small tasks, InboxDollars gives you more surfaces to earn on. Find out which cash-out minimum your account actually enforces before you count on it.

If you are outside the United States, or you want to know what an hour is worth before you spend it, Prolific is the one with a published floor. Check the verification list for your country first, and have PayPal working before you start, because there is no second way out.