Interactive Tutor vs Ribbo AI
Official pricing (checked 2026-10-26, 2026-10-26) computed at the same usage levels. 1 USD = 1,324.7 KRW.
- At 3 People using it (3 people)
Interactive Tutor
- ₩786,400
- Unlimited Access, $593.67/mo
Ribbo AI- No plan
- One side has a plan that cannot be converted to usage, so no winner is called per band. Compare the monthly prices in the table below.
Monthly cost by usage
Which side is cheaper at light, typical and heavy use. Each cell is the cheapest plan that covers that amount.
| People using it | Interactive Tutor | Ribbo AI | Cheaper |
|---|---|---|---|
| Just me (1) | $593.67 Unlimited Access, ₩786,400 | No plan | Interactive Tutor |
| 3 people (3) | $593.67 Unlimited Access, ₩786,400 | No plan | Interactive Tutor |
| 10 people (10) | $593.67 Unlimited Access, ₩786,400 | No plan | Interactive Tutor |
For your exact usage, use the AI productivity calculator.
At a glance
- Entry prices: Interactive Tutor Single Session at $3.78/mo (about ₩5,000), Ribbo AI Starter at $20/mo (about ₩26,500).
- At just me usage, Interactive Tutor (Unlimited Access, $593.67) is the only one with a public plan that covers it.
- At 3 people usage, Interactive Tutor (Unlimited Access, $593.67) is the only one with a public plan that covers it.
- At 10 people usage, Interactive Tutor (Unlimited Access, $593.67) is the only one with a public plan that covers it.
- Both have free plans (Interactive Tutor Free, Ribbo AI Free).
Interactive Tutor pricing
An AI English tutor operated by Bucephalus Ventures, offering SELT exam preparation and industry-specific workplace English sessions for fields such as healthcare and construction. Tool page
| Plan | Monthly | Annual billing | KRW | Included / month | Notes |
|---|---|---|---|---|---|
| Free | $0 | - | ₩0 | 1 credits | One free session for new sign-ups. |
| Single SessionCheapest paid | $3.78 | - | ₩5,000 | 1 credits | Official page price £2.99. £2.99 per session, one-time purchase. |
| 5 Sessions | $16.44 | - | ₩21,800 | 5 credits | Official page price £12.99. £2.60 per session, one-time purchase. |
| 10 Sessions | $29.10 | - | ₩38,500 | 10 credits | Official page price £22.99. £2.30 per session, one-time purchase. |
| 20 Sessions | $50.62 | - | ₩67,100 | 20 credits | Official page price £39.99. £2.00 per session, BEST VALUE, one-time purchase. |
| Unlimited Access | $593.67 | - | ₩786,400 | Unlimited | Official page price £469. Monthly, VAT excluded, unlimited users. |
Free
$0
1 credits
One free session for new sign-ups.
Single SessionCheapest paid
$3.78/mo
- In KRW
- ₩5,000
- Included / month
- 1 credits
Official page price £2.99. £2.99 per session, one-time purchase.
5 Sessions
$16.44/mo
- In KRW
- ₩21,800
- Included / month
- 5 credits
Official page price £12.99. £2.60 per session, one-time purchase.
10 Sessions
$29.10/mo
- In KRW
- ₩38,500
- Included / month
- 10 credits
Official page price £22.99. £2.30 per session, one-time purchase.
20 Sessions
$50.62/mo
- In KRW
- ₩67,100
- Included / month
- 20 credits
Official page price £39.99. £2.00 per session, BEST VALUE, one-time purchase.
Unlimited Access
$593.67/mo
- In KRW
- ₩786,400
- Included / month
- Unlimited
Official page price £469. Monthly, VAT excluded, unlimited users.
1 USD = 1,324.7 KRW (2026-10-25). Checked on the official pricing page on 2026-10-26. Bold values are monthly-billing prices; taxes and payment fees excluded.
Ribbo AI pricing
Ribbo AI is an AI chatbot platform that answers customer inquiries 24/7. It has a free plan, and you can train agents with your website data. Tool page
| Plan | Monthly | Annual billing | KRW | Included / month | Notes |
|---|---|---|---|---|---|
| Free | $0 | - | ₩0 | 30 credits | 30 monthly message credits, 1 agent, 1M characters of data, 2 files, start without a credit card |
| StarterCheapest paid | $20 | $16.67 | ₩26,500 | 1,000 credits | 1,000 monthly message credits, 1 agent, 1 team member, 2M characters of data, $200/year when billed annually, GPT-4o mini responses 0.4 credits, Claude Sonnet 4.6 responses 8 credits |
| Growth | $50 | $41.67 | ₩66,200 | 2,500 credits | 2,500 monthly message credits, 3 agents, 3 team members, 4M characters of data, $500/year when billed annually |
| Scale | $150 | $125 | ₩198,700 | 5,000 credits | 5,000 monthly message credits, 5 agents, 5 team members, 6M characters of data, $1,500/year when billed annually |
Free
$0
30 credits
30 monthly message credits, 1 agent, 1M characters of data, 2 files, start without a credit card
StarterCheapest paid
$20/mo
- In KRW
- ₩26,500
- Annual billing
- $16.67
- Included / month
- 1,000 credits
1,000 monthly message credits, 1 agent, 1 team member, 2M characters of data, $200/year when billed annually, GPT-4o mini responses 0.4 credits, Claude Sonnet 4.6 responses 8 credits
Growth
$50/mo
- In KRW
- ₩66,200
- Annual billing
- $41.67
- Included / month
- 2,500 credits
2,500 monthly message credits, 3 agents, 3 team members, 4M characters of data, $500/year when billed annually
Scale
$150/mo
- In KRW
- ₩198,700
- Annual billing
- $125
- Included / month
- 5,000 credits
5,000 monthly message credits, 5 agents, 5 team members, 6M characters of data, $1,500/year when billed annually
1 USD = 1,324.7 KRW (2026-10-25). Checked on the official pricing page on 2026-10-26. Bold values are monthly-billing prices; taxes and payment fees excluded.
FAQ
- Interactive Tutor or Ribbo AI: which is cheaper?
- At just me usage, Interactive Tutor (Unlimited Access, $593.67) is the only one with a public plan that covers it. At 3 people usage, Interactive Tutor (Unlimited Access, $593.67) is the only one with a public plan that covers it. At 10 people usage, Interactive Tutor (Unlimited Access, $593.67) is the only one with a public plan that covers it.
- Do Interactive Tutor and Ribbo AI have free plans?
- Both have free plans (Interactive Tutor Free, Ribbo AI Free).
- What are the entry prices of Interactive Tutor and Ribbo AI?
- Entry prices: Interactive Tutor Single Session at $3.78/mo (about ₩5,000), Ribbo AI Starter at $20/mo (about ₩26,500).
How this is calculatedExchange rate, how a plan is chosen, what is excluded, and the disclaimer
How this is calculated
- 1KRW is converted at 1 USD = 1,324.7 KRW as at 2026-10-25. The rate is refreshed daily.
- 2Monthly cost is the monthly-billing price of the cheapest plan that covers the usage entered. Overage is added only where the official page states an overage rate; a plan whose allowance is exceeded with no stated overage is left out of the ranking.
- 3Credit-based tools are converted using the credits-per-unit figure printed on the official page. Tools whose credit cost varies by model, with no official conversion published, are excluded from the ranking and listed separately.
- 4The per-unit price is the plan's monthly price divided by its monthly allowance. Unlimited plans show none, as there is nothing to divide by.
- 5A 원고지 sheet is 200 characters; an A4 page is taken as 1,800 characters at 10pt with 160% line spacing.
- 6Prices are as published by the vendor. VAT, card issuers' foreign-transaction fees and the rate applied on a KRW settlement are excluded. Regional pricing and temporary promotions may not be reflected.
- 7Paying in dollars by card means your issuer adds its own exchange rate and a foreign-transaction fee, typically 1-2% of the amount. That figure depends on the issuer and the moment of payment, so Wolmma cannot know it and does not include it.
Disclaimer
Wolmma is an information site that collects prices from each tool's official pricing page. We may hold an affiliate relationship with a vendor, but we are neither the seller nor its agent.
We verify as carefully as we can, but a displayed price, allowance or conversion may differ from what you are actually charged, because of plan changes, regional policy, promotions or tax. Confirm the final amount on the official page before you pay.
These figures are reference information, not a recommendation or advice to buy. Wolmma accepts no liability for loss arising from a purchase or contract entered into on the basis of this information.
What your card is actually billed will differ from the figure shown, according to your issuer's exchange rate, its foreign-transaction fee and local tax. None of that is within our sight or control, and we accept no liability for it. Payment, refunds and plan changes are a contract between you and the vendor, to which the Company is not a party.
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