Comparing Coloso and Prentora
Coloso is known as one of the best places to learn illustration, concept art, and character design online. It works with established professional artists to make long, in-depth courses, films and edits them to a high standard, and is selective about who it lets teach. If the particular artist you want to learn from teaches on Coloso, that alone can be a good reason to buy there.
We built Prentora, so we are not a neutral party. Everything we say about Coloso on this page links to a source you can check for yourself. Prentora is also built to have that level of quality in its courses, in addition to dubbing that sounds natural, pricing that does not change at checkout, every language included in a single purchase, and the freedom to download and keep the courses you buy.
What Coloso does well
Coloso's main strength is who teaches there. Its instructors are established professionals with genuine industry credits, and some are well-known names in illustration and concept art. Courses are long, often ten to twenty hours, and go deep into a subject rather than skimming it. Coloso reviews and selects the people it lets teach, so the catalogue stays consistent. Prentora works the same way. We invite experienced creators, and we work closely with them through production, giving feedback and guidance to keep every course at a high standard before it goes live. Because the two platforms overlap here, the clearest reason to choose Coloso is a particular instructor whose course you can only get there.
At a glance
| Feature | Prentora | Coloso |
|---|---|---|
| Natural, evenly-paced dubbing | Yes | No |
| Every language included in one purchase | Yes | No |
| Download course videos for personal use | Yes | No |
| Watch online (streaming) | Yes | Yes |
| Watch on unlimited devices | Yes | 3 only |
| Price you see is the price you pay | Yes | Shifting |
| Downloadable materials in your language | Yes | Not always |
| Only invited, experienced instructors | Yes | Yes |
| Takes a stand against generative AI for creative work | Yes | No |
Coloso's dubbed audio speeds up and slows down to match the original language
When Coloso dubs a course into another language, the new audio is fitted to the timing of the original recording. A sentence rarely takes the same time to say in two languages, so the dubbed voice rushes to keep up and then slows to wait, and the delivery comes out uneven.
Even a reviewer who rated the course highly noticed the pacing:
Review article · note.com
March 2025
At first, the delivery was matched to the timing of the original language, so the pace swung sharply between fast and slow.
Translated by Prentora · original in Japanese
最初は文字のスピードが元の言語に合わせていて緩急が激しかった
On Prentora, we match the timing to the spoken words in each language, so the audio never has to speed up or slow down to fit another language's rhythm. In addition, subtitles for each language are timed to the audio, so they do not appear too early or too late, which can also be distracting.
Coloso's AI dubbing does not sound natural, and you can't hear it before you buy
AI dubbing often sounds robotic, and making Prentora's dubbing sound natural is one of the main reasons we built it. The harder problem with Coloso is that you cannot judge its dubbing for yourself: its public course pages only play a trailer in the original language, so you do not hear the dubbed voice until after you have paid. And its promotion terms rule out a refund if you are unhappy with it:
From Coloso · promotion terms
Refund requests that are due to AI translations will not be accepted.
Review article · maronica.work
June 2025
The dubbed version removes the instructor's voice, replacing it with a single female AI-synthetic voice … if the voice quality doesn't suit you, it might be hard going.
Translated by Prentora · original in Japanese
吹替版は講師の音声はなく、女性の合成音声に統一されます … 音声が自分に合わない声質の場合、難しいかもしれません
On Prentora, every course has a preview that uses the same dubbed audio you will hear throughout, so you can decide whether our dubbing works for you before you spend anything.
Coloso sells the dubbed and original versions as separate purchases
On Coloso, an AI-dubbed course and the original-audio course are separate products at separate prices, so you buy one or the other. Even if you already own a course, when a dubbed version is added later you are only offered a discount, and you still have to buy it again:
Review article · maronica.work
June 2025
When a dubbed version becomes available for a course you already own, a special discount coupon is sent to your registration email. But note that it is only a 'discount', you still have to pay the difference.
Translated by Prentora · original in Japanese
自分が持っている講座に吹き替えバージョンの販売が決まった場合、開講登録メールアドレスに特別割引クーポンが届きます。ただし注意点として、あくまで「割引」であり、差額を支払う必要があります。
On Prentora, a single purchase includes every language we support, both dubbed audio and the instructor's original audio, and you can switch between them whenever you like.
Coloso's advertised discounts often don't apply at checkout
Coloso course pages almost always show a crossed-out price with a discount already applied. That figure is less solid than it looks: Coloso's own notice (archived) says early-bird and newly released courses are excluded from coupons, and buyers report that the discounts on display do not survive to the final step.
United Kingdom
February 2025
Firstly, by default, every single course you look at always shows a discounted price by default, for example right now the "Master Figure Drawing: Capturing Natural Anatomy from Every Angle" course shows the original price of USD 206.00 crossed out and "Up to 24% off" then in big, bold text "USD 156.00". On every other course platform I've ever seen, if they show discounted prices on the course page, that means the course IS discounted to that price... Not on Coloso. If I click on checkout right now, the only option is a "class voucher" for $206 USD. When I go to checkout, sure enough, there are no coupons or any discounts available. They show the discounted price in all of the ads that they plaster all over places like Instagram. This in itself is already very misleading.
On Prentora, the price you see is the price you pay, and it does not change between the course page and checkout. If an instructor offers a discount, it is shown on the page and it is exactly what you are charged.
Coloso runs constant "events" and cashback offers that mostly don't apply
Alongside the shifting prices, Coloso runs a steady stream of limited-time "events" and cashback promotions with large banners across the site, in advertisements and marketing emails. As soon as one sale ends another begins, each with its own countdown timer. In practice, many courses are excluded from the offers.
United Kingdom
February 2025
They CONSTANTLY have these "events" such as, "100% CASHBACK" where they will have HUGE banners all over the website, tons and tons of ads where the massive text says "100% CASHBACK". Let's go to Coloso right now... a "100% cashback" event just ended a day or two ago, and right now there's another one. It says "Buy 3 get 1 free 100% Cashback!". In my previous experience, the vast, vast majority of courses were NOT eligible for 100% cashback, and so when I purchased a course for around $175, I only got $100 cashback coupon. BUT it gets much worse, because then - literally almost every single course I tried to use the coupon with, it was ineligible for use.
Australia
February 2025
… I am giving the website a 1 star because of the amount of dishonest emails they keep sending out to people. These coupons they keep spamming via email are an ABSOLUTE JOKE! They don't even give that much discount- stop making clickbait titles claiming you'd be able to save alot of $$ if you use the supposed coupons. … I am getting so sick and tired of them doing this type of stupid gimmick. You don't save money at all, you'll still be paying in the high $180USD per class...
On Prentora, there are no countdowns, no cashback, and no coupons to chase. One honest price, shown up front.
Coloso's refund process is manual and conditional, and support is a run-around
Getting a refund from Coloso depends on how many clips you have watched and how long ago you bought. Watch part of even one clip and a full refund is already off the table. To claim anything you have to email support in writing within 14 days with your account and class details, and when something goes wrong reviewers describe support as hard to reach.
Coloso's own refund tiers, from their refund policy (archived):
| Clips watched | Within 10 days | 10 to 14 days | 15+ days |
|---|---|---|---|
| 0 | 100% | 70% | 0% |
| 1 to 2 | 70% | 50% | 0% |
| 3+ | 0% | 0% | 0% |
United States
May 2024
When you go into their chat, it all automated saying they will email you to back to you because everyone is busy. 8 hours later they email you with a chat link that if your not glued to your email, they close within 2 minutes. Then you have to restart a chat. Its a run around. I tried emailing and they sent me a chat link that was closed. So I guess, just pray that you don't have a problem cause it won't get resolved.
On Prentora, an eligible refund is a single click. We check automatically whether your purchase is still eligible, and when it is we refund the full amount every time, so you are not composing a carefully worded email and waiting days for a reply. Refunds go back to your original payment method via our trusted payment partner, Stripe.
Coloso limits you to three devices
Coloso limits each account to three devices, and changing a registered device is allowed only once a year through support.
From Coloso · FAQ
Q. How many devices can I register to my account?
We limit the number of devices that can access an account to 3 each. Device registration occurs upon accessing a class video. Changes to device registration can happen only once a year.
United States
May 2026
While I don't think this company is a scam, it's certainly a mess. I've purchased two very expensive tutorials from them and can't even access them because apparently I 'reached the three device limit' trying to use the iPad I always use + my usual laptop?? I reached out a week ago with no response.
On Prentora, there is no device limit. Sign in and watch wherever you like. We do monitor for signs of account sharing abuse, but only take action against accounts that are accessed from several different countries within a very short span of time.
Coloso locks its videos to its own player and prohibits downloads
Coloso courses can only be streamed through Coloso's own player. Its FAQ says there is no download service and playback is streaming-only, and its terms (archived) prohibit recording or copying the content. Several reviewers say the player itself gets in the way of watching what they paid for.
United States
February 2026
Their player is garbage … It said I tried to watch on more than three registered devices (same account, same phone) and wouldn't let me. Their support chat simply does not function. You only have the ability to select from predetermined 'questions'. there is no actual help or support for the issue I'm having. What's more is the course was almost $300
March 2025
The video player you're forced to download to watch the courses is completely useless because they care more about stopping piracy than giving PAYING customers a good experience, that should tell you everything you need to know about this company.
On Prentora, you can download your course videos for personal use and keep them, as well as stream online. Allowing downloads means accepting some risk of piracy. We would rather take that risk and give paying customers a good experience than lock everyone down to stop a few. There is no DRM, so a player you do not get on with can never cut you off from something you own.
Coloso leaves some downloadable course materials in the original language
Coloso courses include downloadable extras like templates and reference sheets. On subtitled courses, some of those files stay in the original language.
Review article · robonoisikoro.com
June 2026
In the subtitled version, some of the bonus materials have sections that are still in the original-language script.
Translated by Prentora · original in Japanese
字幕版では一部特典が韓国語表記のままの箇所があります。
On Prentora, we translate the downloadable materials that come with a course, and we add translated annotations for the meaningful text shown on screen.
Coloso promotes generative AI
Coloso sells and markets courses (archived) on producing finished art with generative-AI tools. One course description offers to guide you through "understanding how to utilize AI tools like ChatGPT and Midjourney, to creating and applying real design outcomes."
On Prentora, we exist to help people build real creative skill through human instruction. We use AI only to make human-taught courses available across languages. Prentora does not support the use of generative AI for creative works.
When Coloso is the better choice
If there is a specific creator whose course only exists on Coloso, you can only buy it from there, because Coloso's terms (archived) keep ownership of that content with Coloso rather than the original creator, so those courses stay on its platform. Prentora works differently for creators: our agreement is non-exclusive, and instructors keep full ownership of their work and are free to teach it elsewhere. That is better for the creators we work with, and it is one of the principles Prentora was built on.
Frequently asked questions
Do I keep my Prentora courses forever?
Yes. Every course you buy is yours permanently, with no subscription and no expiry, and you can download the videos for personal use and watch offline.
Can I watch a course in more than one language?
Yes. Every Prentora course includes all of our supported languages, both dubbed audio and the instructor's original audio, and you can switch anytime. Coloso sells the dubbed and original versions separately and does not let you switch after purchase.
Is Prentora's dubbed audio natural to listen to?
It is produced to sound natural, and we match the timing to the spoken words in each language, so the audio never has to speed up or slow down. Every course has a preview that uses the same dubbed audio, so you can judge it for yourself before you buy. Coloso is careful not to let you hear its dubbed audio on its public course pages, which only play a trailer in the original language.
Can I download courses to watch offline?
Yes. You can download course videos for personal use on Prentora. Coloso not only limits you to streaming on three devices, but its terms actively prohibit downloading or recording the course content for personal use.
Are the discounts on Coloso real?
The price shown on a Coloso course page is often a temporary or future figure, and its own notices exclude many courses from coupons, so the discount may not apply at checkout. Prentora shows one honest price that does not change at checkout.
How do refunds work?
On Prentora, an eligible refund is a single click and always for the full amount, checked automatically. Coloso's refund depends on how many clips you have watched and how long ago you bought: a full refund only if you have not started the course and are within 10 days, dropping to 70% or 50% if you have watched part of it, and nothing after 14 days or three clips watched. You claim it by emailing support with your account and class details.
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Illustration, design, and animation courses, each one yours to keep.
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