OpnForm vs Perpetual ML
Official pricing (checked 2026-10-26, 2026-10-26) computed at the same usage levels. 1 USD = 1,323.9 KRW.
- At 3 People using it (3 people)
OpnForm
- ₩38,400
- Pro, $29/mo
Perpetual ML- 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 | OpnForm | Perpetual ML | Cheaper |
|---|---|---|---|
| Just me (1) | $29 Pro, ₩38,400 | No plan | OpnForm |
| 3 people (3) | $29 Pro, ₩38,400 | No plan | OpnForm |
| 10 people (10) | $29 Pro, ₩38,400 | No plan | OpnForm |
For your exact usage, use the AI productivity calculator.
At a glance
- Entry prices: OpnForm Pro at $29/mo (about ₩38,400), Perpetual ML Marketplace 100+ Tasks at $0.90/mo (about ₩1,200).
- At just me usage, OpnForm (Pro, $29) is the only one with a public plan that covers it.
- At 3 people usage, OpnForm (Pro, $29) is the only one with a public plan that covers it.
- At 10 people usage, OpnForm (Pro, $29) is the only one with a public plan that covers it.
- Both have free plans (OpnForm Free, Perpetual ML Marketplace Free).
OpnForm pricing
OpnForm is a tool for creating online forms and collecting responses. All plans, including the free plan, allow unlimited forms and responses. Tool page
| Plan | Monthly | Annual billing | KRW | Included / month | Notes |
|---|---|---|---|---|---|
| Free | $0 | - | ₩0 | 1 workspaces | Unlimited forms and responses, 10MB files, branding display required, 1 workspace |
| ProCheapest paid | $29 | $25 | ₩38,400 | Unlimited | Branding removal and custom domain, 50MB files, unlimited workspaces, $25/month when billed annually |
| Business | $79 | $67 | ₩104,600 | - | Role- and permission-based multi-user access, 1GB files, advanced branding, priority support, $67/month when billed annually |
Free
$0
1 workspaces
Unlimited forms and responses, 10MB files, branding display required, 1 workspace
ProCheapest paid
$29/mo
- In KRW
- ₩38,400
- Annual billing
- $25
- Included / month
- Unlimited
Branding removal and custom domain, 50MB files, unlimited workspaces, $25/month when billed annually
Business
$79/mo
- In KRW
- ₩104,600
- Annual billing
- $67
- Included / month
- -
Role- and permission-based multi-user access, 1GB files, advanced branding, priority support, $67/month when billed annually
1 USD = 1,323.9 KRW (2026-10-27). Checked on the official pricing page on 2026-10-26. Bold values are monthly-billing prices; taxes and payment fees excluded.
Perpetual ML pricing
Perpetual ML's fully managed machine learning cloud with usage-based pricing for model training, batch inference, and real-time endpoints. Includes data drift monitoring. Tool page
| Plan | Monthly | Annual billing | KRW | Included / month | Notes |
|---|---|---|---|---|---|
| Marketplace Free | $0 | - | ₩0 | 9 tasks | Marketplace 1-9 tasks free |
| Marketplace 10-99 Tasks | $9.90 | - | ₩13,100 | - | $9.9 per task monthly for 10-99 tasks per month. AWS/Snowflake costs separate. |
| Marketplace 100+ TasksCheapest paid | $0.90 | - | ₩1,200 | - | $0.9 per task monthly for 100+ tasks. AWS/Snowflake costs separate. |
Marketplace Free
$0
9 tasks
Marketplace 1-9 tasks free
Marketplace 10-99 Tasks
$9.90/mo
- In KRW
- ₩13,100
- Included / month
- -
$9.9 per task monthly for 10-99 tasks per month. AWS/Snowflake costs separate.
Marketplace 100+ TasksCheapest paid
$0.90/mo
- In KRW
- ₩1,200
- Included / month
- -
$0.9 per task monthly for 100+ tasks. AWS/Snowflake costs separate.
1 USD = 1,323.9 KRW (2026-10-27). Checked on the official pricing page on 2026-10-26. Bold values are monthly-billing prices; taxes and payment fees excluded.
FAQ
- OpnForm or Perpetual ML: which is cheaper?
- At just me usage, OpnForm (Pro, $29) is the only one with a public plan that covers it. At 3 people usage, OpnForm (Pro, $29) is the only one with a public plan that covers it. At 10 people usage, OpnForm (Pro, $29) is the only one with a public plan that covers it.
- Do OpnForm and Perpetual ML have free plans?
- Both have free plans (OpnForm Free, Perpetual ML Marketplace Free).
- What are the entry prices of OpnForm and Perpetual ML?
- Entry prices: OpnForm Pro at $29/mo (about ₩38,400), Perpetual ML Marketplace 100+ Tasks at $0.90/mo (about ₩1,200).
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 = 1,323.9 KRW as at 2026-10-27. 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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