Hey everyone – we want Brilliant to be around for a long time, and to continue building a great product for you. Part of how we plan to do that is by offering a subscription version of Brilliant – called Brilliant Squared – with some special features to make it more awesome for members who subscribe.

Our vision for Brilliant Squared is to offer a structured path to improvement in particular topic areas, and a more powerful interface for saving and measuring progress. Our first two Brilliant Squared features that we are releasing today are more Practice maps, and a built-in scratchpad and calculator on every problem. We are continuing to work on more maps and features for Brilliant Squared members, and expect it to evolve a lot over the next weeks and months.

Brilliant Squared is still in its early stages, so we are offering introductory pricing for members who join Brilliant Squared before June 2014. We hope you enjoy it, and tell us your feedback.

We want most of Brilliant to remain free. As a free user, you’ll still have access to the community's awesome problems and notes, just like you always have.

Thanks to everyone for helping us build a company that we hope will grow and last to serve this generation, and many future generations.

## Comments

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TopNewestThis \(\text{Brilliant}^2\) is a great idea folks! We all know the hard-work the staff does. Subscribing to \(\text{Brilliant}^2\)

is the leastthing we can do to thank them. Of course, Brilliant has to find a way to earn.\(\text{Brilliant}^2\) is the best way. I would have been disappointed if any other way would have been there. – Ameya Salankar · 3 years, 2 months ago

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How about, exchanging some points for free subscription (e.g. 10000 points for a month)? :P – Ammar Fathin Sabili · 3 years, 2 months ago

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– Trevor B. · 3 years, 2 months ago

Agreed, I think it's time points got functionality again.Log in to reply

– Michael Diao · 3 years, 2 months ago

Perhaps not a free, but a discounted one?Log in to reply

– Milind Prabhu · 3 years, 2 months ago

yea man! That would be really great...Nice suggestion.Log in to reply

– Vighnesh Raut · 3 years, 2 months ago

totally agree with you...Log in to reply

– Spock Weakhypercharge · 3 years, 2 months ago

What were the use of points in the first place? When I started I didn't see any point.Log in to reply

– Dollesin Joseph · 2 years, 11 months ago

That would be great :DLog in to reply

– Finn Hulse · 3 years, 2 months ago

Definitely. It would encourage people to use the site more often, which should be Brilliant's goal rather than to make money.Log in to reply

I wish you could also include skill maps for mechanics and electtrcity and magnetism – Mardokay Mosazghi · 3 years, 2 months ago

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– Suyeon Khim Staff · 3 years, 2 months ago

Hi Mardokay – We are hard at work both adding more skills to existing practice maps and adding practice maps in more topics.Log in to reply

– Mardokay Mosazghi · 3 years, 2 months ago

Thanks I look forward to itLog in to reply

Can other users help (voluntarily)? :P Like writing notes or something. x'D – Vishnuram Leonardodavinci · 3 years, 2 months ago

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Is there a free trial or something? Just to experience the service once, and then decide whether to subscribe or not. – Shabarish Ch · 3 years, 2 months ago

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here. The maps in other topics work just like the Algebra map. – Suyeon Khim Staff · 3 years, 2 months ago

Hi Shabarish – not at the moment, but we will consider adding something like that in the future. In the meanwhile, you can see more details on how the scratchpad worksLog in to reply

– Krishna Ar · 3 years, 2 months ago

May I know if the algebra map is what the practice algebra thing is?Log in to reply

– Suyeon Khim Staff · 3 years, 2 months ago

Hi Krishna, yes it is. Free members get access to the algebra map in Practice. Brilliant Squared subscribers get access to additional maps in Practice.Log in to reply

– Krishna Ar · 3 years, 2 months ago

Thank you. :) But my question is - " does this have theory also"? This is because, Practice Algebra has only problemsLog in to reply

– Michael Diao · 3 years, 2 months ago

Yeah, if we could all have like a free trial day or somethingLog in to reply

– Mardokay Mosazghi · 3 years, 2 months ago

I donot think so but that would be goodLog in to reply

– Neil Ryan Manolong · 2 years ago

I think it would be a great idea.Log in to reply

Can we get a look at the maps themselves, without getting to solve the questions in them. That would let me (and others decide) whether to buy or not.

For example, what are the specific topics and sub-topics covered in Advanced Algebra? Conics, Vectors, Series, Mathematical Induction, Binomial Theorem are some that come to mind. But knowing the specific topics would really help. – Star Light · 3 years, 2 months ago

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Advanced Algebrasections are: Complex Numbers, Complex Conjugates, Completing the Square, Partial Fractions, Polar Coordinates, Algebraic Identities, Parametric Equations, Algebraic Manipulation, De Moivre's Theorem, Arithmetic and Geometric Progressions, and Vieta's Formula.In some cases, these sections cover more advanced versions of the material than are covered in the Algebra map. We are also working on the following sections for Advanced Algebra: Factorization, Algebraic Manipulation, Systems of Equations, Olympiad Polynomials, Olympiad Exponentials and Logarithms, Olympiad Absolute Value, Olympiad Functions, Olympiad Complex Numbers, Olympiad System of Equations, Olympiad Inequalities, Olympiad Polynomials, Diophantine Equations, Mathematical Induction.

Calculussections are: Functions, Function Operations, Sequences and Series, Limits of Sequences, Limits of Functions, Algebraic Differentiation, Transcendental Differentiation, Differentiation Rules, Higher Derivatives, and Extrema.We are also working on adding the rest of a typical Calculus curriculum, which has too many sections to list here.

Combinatoricssections are: Rule of Sum, Set Notation, Rule of Product, Systems of Equations, Venn Diagrams, Permutation Without Repetition, Principle of Inclusion and Exclusion, Combinations Without Repetition, Recurrence Relations, Probability, Set Notation, Counting by Complement, Venn Diagrams, Binomial Coefficients.We are also working on the following sections to add: Bijection / Injection / Surjection, Counting Without Restriction, and more advanced versions of many of the sections already mentioned. – Suyeon Khim Staff · 3 years, 2 months ago

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Conics: Circle, Ellipse, Parabola, Hyperbola Trigonometry: The Works: Basic Definitions, Basic and Advanced Identities, Solution of Triangles, Graphs, Angular Movement Functions: Transformations, Scaling, Inverses, Horizontal Line Test, Vertical Line Test Pre-Calculus Linear Algebra: Vectors and applications to geometry, matrices, determinants, area of triangle via determinant Geometry: The works Binomial Theorem Series and Progressions: Arithco-geometric series, harmonic series, exponential series, logarthmic series Complex Numbers: Argand Diagrams

I am aware that there are thousands of more topics in maths - just trying to reconcile your maps to a comprehensive maths syllabus pre-calculus. – Star Light · 3 years, 2 months ago

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Should't they be available before the

Olympiadseries starts - considering that that particular series would be quite tough if you do justice to it. You can always add an Olmypiad version of it for more difficult problems – Star Light · 3 years, 2 months agoLog in to reply

– Suyeon Khim Staff · 3 years, 2 months ago

Agreed. These are not necessarily listed in the final order that they will appear, they are just the sections that are under development.Log in to reply

One more question: The next logical step in calculus will be to add Integration. Are you also planning to add Multi-Variable Calculus / Differential Equations thereafter? – Star Light · 3 years, 2 months ago

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– Suyeon Khim Staff · 3 years, 2 months ago

We may add sections on Multi-Variable Calculus and Differential Equations, but Integration will definitely happen first. After that, it depends somewhat on what topics are in the highest demand.Log in to reply

I love this idea! The costs are reasonable for me :D

If you are thinking of starting a Practice Maps on Chemistry, it would be my honour if you include my problems on basic physical chemistry here.

Good Luck and All the best for this site that helps many of us and the next generations! – Christopher Boo · 3 years, 2 months ago

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I know you guys do need the money to keep the site operational but I feel that either each practice map should cost $3.14 individually as a one time payment or that it should cost $3.14 a month without being forced to pay for 12 months. Anyone who buys that package will get through the practice maps probably in the first month so it makes sense to just make it a one time payment for each individual package. It doesn't seem like a product that needs to be renewed over and over. Realistically I think you guys will make more profit by having a lot of people buying a practice map package at $3.14/month one-time than you would from having very few people buy all 3 packages for 12 months for $37.68. – Cole Coupland · 3 years, 2 months ago

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Also note that pricing is different for different countries - a really nice touch since the dollar pricing is for countries that earn

indollars. – Star Light · 3 years, 2 months agoLog in to reply

– Cole Coupland · 3 years, 2 months ago

I do think its reasonable I just don't find the commitment of 12 months appealing. Its quite a long time and I really can't predict how active I will be on the website so all I think should be done is to change it from a yearly to monthly commitment. I think I'll also wait for multivariable calculus and differential equations to come out. I really like that they decided to include the subscription feature because before this they were building the website with not much profit. I really don't know if it would be effective financially but I really think the number of consumers will increase greatly if it is changed from yearly to monthly commitments.Log in to reply

@Suyeon Khim @Silas Hundt – Cole Coupland · 3 years, 2 months ago

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@Cole Coupland Sorry about the confusion, great to see you are a B^2 member! – Silas Hundt Staff · 3 years, 2 months ago

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– Cole Coupland · 3 years, 2 months ago

One thing I noticed is that it said you lose all your progress if you don't resubscribe to B^2. I do agree that you should no longer have access to the practice maps but I think wiping all your progress is quite harsh and even if you aren't a member for one day you are back to square one. Maybe I misinterpreted the statement but could you please clarify it?Log in to reply

– Suyeon Khim Staff · 3 years, 2 months ago

Hi Cole, we do store the data for 30 more days after you're not a Brilliant^2 member, in case the subscription has lapsed accidentally.Log in to reply

scratchpad? – Silas Hundt Staff · 3 years, 2 months ago

Have you seen theLog in to reply

– Cole Coupland · 3 years, 2 months ago

Yes I saw it. It looks interesting but I don't really have a need for it, I use scrap paper for all of my questions. I am sure lots of other members on the website will want to use it though. I know there are quite a few members who work only on their computer and mobile devices so it should make it easier for them to work electronically. It should be appealing as well since it is only a monthly commitment.Log in to reply

I think it would be nice if it was possible to pay with PayPal. Also, since 3.14 $ is about 2.28 €, I don't think it's fair that european users have to pay 3.14 €.

@Suyeon Khim – Alessio Rossi · 3 years, 2 months ago

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@Suyeon Khim Can I Use Brazilian Card ?

How I'll Know If This Is Good ?

Thanks , All the Best ! – Gabriel Merces · 3 years, 2 months ago

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– Silas Hundt Staff · 3 years, 2 months ago

You should be able to, yes!Log in to reply

– Gabriel Merces · 3 years, 2 months ago

This Seems A Good Feature ! I'll Talk With My Mother About This ! :DLog in to reply

– Gabriel Merces · 3 years, 2 months ago

I think that would be Best , We Print the Billet Banking and Go In A Banks Pay! My Mother Don't Like of Put Passwords on the Internet!Log in to reply

@Suyeon Khim Would Good Adding a Method to Pay by printing a bank slip! My mother does not like Put Passwords on the Internet and I Want Make This Upgrade !

Thanks , All the Best ! Good Job ! – Gabriel Merces · 3 years, 2 months ago

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– Suyeon Khim Staff · 3 years, 2 months ago

Hi Gabriel, noted. We're working on adding more payment options over the next few months.Log in to reply

This Feature Seems Be Very Good ! :D

All the Best ! Good Job !! – Gabriel Merces · 3 years, 2 months ago

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I like the fact that the pricing is customised as per country.

Lots of sites price their services in dollars (at a price point suitable for US customers) and it becomes too expensive for everybody else. – Star Light · 3 years, 2 months ago

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I have some feedback on the way in which the practice maps are structured. I find that there is a mishmash of topics - although the topics themselves seem to be relevant.

For example: Calculus: The map starts with a skill on "identity functions". This, along with other basic skills should be taught in Algebra / Advanced Algebra.

The Combinatorics map has a large number of skills on equations and sets. While these skills may perhaps be as foundational skills, they do not belong in that map. They belong in a map on Algebra (or perhaps Miscellaneous).

Some re-organisation of skills would be highly appreciated. – Star Light · 3 years, 2 months ago

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what is the cost in rupees??? – Aniket Kamble · 1 year, 10 months ago

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Brilliant Squared. – Calvin Lin Staff · 1 year, 10 months ago

Check it out onLog in to reply

– Aniket Kamble · 1 year, 10 months ago

actually the cost is written as " ₹2,250 " My query is that , what is that square box?? is it rupees or dollars or in any other currency...Log in to reply

– Suyeon Khim Staff · 1 year, 10 months ago

Indian rupees.Log in to reply

I really liked Brilliant and was willing to subscribe as the price is quite accessible. But I don't use credit cards, and pay most of things over the internet through paypal, so I'm really sad to have to give up on Brilliant. – Roger Senna · 2 years, 1 month ago

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Can anyone please tell me why all the chapters are locked. I was practicing a couple of days back but why it is locked now pls someone tell – Satya Mishra · 2 years, 1 month ago

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– Suyeon Khim Staff · 2 years, 1 month ago

Hi Satya, free quizzes are available for a limited time. If you enjoy Brilliant and find the quizzes valuable, you can upgrade your account to Brilliant^2 to continue accessing unlimited quizzes.Log in to reply

Why my visa card is being declined, whenever i try to pay? – Ishan Gulsia · 2 years, 5 months ago

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@Suyeon Khim @Calvin Lin Please, can you add PayPal as a payment method? – Shenal Kotuwewatta · 2 years, 7 months ago

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Your idea great but you know how many people about thia app.? – Jasani Hardik · 3 years, 2 months ago

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@Suyeon Khim I would like to join Brilliant Squared. As I tried making the payment, an error message "This Card was declined" showed up. All the card details were entered correctly. Please help. Thanks!! – Pranshu Gaba · 3 years, 2 months ago

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– Ishan Gulsia · 2 years, 5 months ago

same with me.Log in to reply

– Suyeon Khim Staff · 3 years, 2 months ago

Hi Pranshu, did you use Visa or MasterCard? Unfortunately, those are the only two types of cards we currently accept. We are working to add more payment options but it will take some time to complete.Log in to reply

– Pranshu Gaba · 3 years, 2 months ago

Yes, it is a MasterCard debit card.Log in to reply

– Suyeon Khim Staff · 3 years, 2 months ago

OK, we'll take a look and follow up via email.Log in to reply

If you buy the 12 month package with the practice sections, do you get the future sections as you guys publish them?

@Suyeon Khim – Cole Coupland · 3 years, 2 months ago

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– Suyeon Khim Staff · 3 years, 2 months ago

Yes.Log in to reply

Why aren't the skill maps for Advanced Algebra, Combinatorics, and Calculus free, while the Algebra skill map is? – Minimario Minimario · 3 years, 2 months ago

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Other maps are not free because it costs us money to make them, so the only way that we can continue to make more is if members subscribe. – Suyeon Khim Staff · 3 years, 2 months ago

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Just like to say, the sketchpad was my idea. :D Thanks for employing it @Suyeon Khim. – Finn Hulse · 3 years, 2 months ago

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