What to know first
The US web quote is $20 before tax, versus a $19.99 App Store quote. Japan's web listing shows approximately JPY 2,727 before tax and JPY 3,000 including tax; its App Store quote is JPY 3,000. The store quotes have unknown tax treatment in AISub's records, so these figures do not establish the cheaper checkout. An existing subscription works on other devices using the same ChatGPT account.
Separate where you pay from where you use ChatGPT
Subscriptions bought on chatgpt.com are managed there; subscriptions bought through iOS in-app purchases are managed by Apple. OpenAI says localized web prices can differ from a currency conversion of the US price, while mobile subscriptions are billed in local currency through the relevant app store.
Using an iPhone does not require buying through Apple. Sign in with the ChatGPT account that already owns your subscription. Switching ChatGPT accounts does not transfer it. Check the account and existing bill before considering a new purchase.
Sources: OpenAI: Multi-currency billingOpenAI: Subscription access and account changesOpenAI: Avoiding duplicate subscription charges across platforms
What the US and Japanese Plus quotes actually show
These are AISub's recorded monthly ChatGPT Plus quotes in their original currencies, not personalized checkout totals. All quote update times below are on November 7, 2026, in UTC+8. Japan's tax-exclusive amount retains the price page's whole-yen rounding.
| Region | Channel | Original quote | Tax treatment | Quote updated (UTC+8) |
|---|---|---|---|---|
| United States | Web | USD 20.00 | Tax-exclusive | Nov 7, 08:19 |
| United States | App Store | USD 19.99 | In-app quote; tax unknown | Nov 7, 08:05 |
| Japan | Web | JPY 3,000 including tax; approximately JPY 2,727 excluding tax | Both amounts shown separately | Nov 7, 08:10 |
| Japan | App Store | JPY 3,000 | In-app quote; tax unknown | Nov 7, 08:05 |
Sources: AISub: US ChatGPT Plus web quoteAISub: US ChatGPT Plus App Store quoteAISub: Japanese ChatGPT Plus web quoteAISub: Japanese ChatGPT Plus App Store quote
Use tax labels without assuming an exemption
Tax-exclusive means the quote omits tax; it does not establish that the buyer qualifies for an exemption. Tax-inclusive amounts are retained where the source explicitly provides them. When App Store evidence does not establish tax treatment, AISub keeps it unknown.
Compare the total due, currency, and period on the web checkout and Apple's purchase confirmation. If one side's tax remains unconfirmed, keep that uncertainty in the comparison. See the guide to tax-inclusive and tax-exclusive prices.
Sources: AISub: Pricing methodologyOpenAI: Multi-currency billing
Include payment costs after aligning currencies
For checkouts in the same currency, compare final totals directly. If conversion is required, use the payment provider's settlement rate and add separately charged fees. AISub's reference conversion does not include every bank or payment cost. Do not add tax again if it is already in the checkout total.
This hypothetical example is separate from the observed quotes: assume the final checkout total is $20, the card issuer converts at CNY 7.20 per dollar, and a separate fee is 1% of the converted amount. The resulting cost is CNY 145.44. Neither rate is live data.
The pricing methodology explains AISub's reference conversions. The example organizes a budget; it does not guarantee a particular card or channel's charge.
Converted payment cost = final checkout total × settlement exchange rate + separate payment fees
Hypothetical example: 20 × 7.20 × 1.01 = CNY 145.44
Sources: AISub: Pricing methodology
A lower quote must match an eligible plan and billing period
Divide a confirmed annual total by 12 to compare monthly equivalents, while retaining the requirement to pay for the year. An unconfirmed period cannot be treated as a monthly bargain based on the amount alone. Business and Business 5x also require a per-seat comparison rather than a direct ranking against individual Plus subscriptions.
A quote from another region establishes neither access nor purchase eligibility. Apple's region-change requirements involve account balances, blocking subscriptions, Family Sharing, and payment methods for the new region. Changing a comparison site's display region does not change your eligibility. Check the channels that your account can actually use.
Sources: AISub: Pricing methodologyApple: Change your Apple Account country or region
Resolve the existing renewal before changing channels
OpenAI recommends canceling renewal on the original platform, waiting for the paid period to end, and then subscribing through the new platform. A failed Apple payment or an apparently inactive plan in ChatGPT does not establish that Apple has stopped renewal attempts. Check the original subscription before creating another bill.
Use the ChatGPT regional price guide to find the relevant plan and channel, then record your renewal date and both checkout totals. Evaluate a switch only once the saving and the conditions for switching are clear.
Sources: OpenAI: Avoiding duplicate subscription charges across platforms
Frequently asked questions
Can I use a web subscription on an iPhone?
Yes, using the same ChatGPT account that made the purchase. Do not buy again just to change devices. If the app shows Free, first check the account and subscription status.
Sources: OpenAI: Subscription access and account changesOpenAI: Avoiding duplicate subscription charges across platforms
Is the App Store always more expensive?
No. The recorded US Plus App Store amount is $19.99, while the web quote is $20 before tax. Their different tax classifications prevent a direct comparison of final payments.
Sources: AISub: US ChatGPT Plus web quoteAISub: US ChatGPT Plus App Store quote
Does Japan's JPY 2,727 web figure prove a saving over JPY 3,000 in the App Store?
No. Approximately JPY 2,727 is the rounded tax-exclusive figure. The web listing also shows JPY 3,000 including tax, while the store record has unknown tax treatment. Compare your checkout totals.
Sources: AISub: Japanese ChatGPT Plus web quoteAISub: Japanese ChatGPT Plus App Store quoteAISub: Pricing methodology
Can I buy a cheaper regional quote just by changing regions?
A quote does not establish eligibility. Apple Account region, existing subscriptions, and payment requirements still apply. The purchase options available to your account determine what you can buy.
Sources: Apple: Change your Apple Account country or regionAISub: Pricing methodology
Should I buy on the web while my Apple subscription is still active?
Resolve the original subscription first. OpenAI recommends canceling renewal through the original platform and waiting for the paid period to end before switching, to avoid overlapping subscriptions and charges.
Sources: OpenAI: Avoiding duplicate subscription charges across platforms
Official sources and review notes
Sources checked on November 7, 2026. Rates and eligibility rules can change; confirm the latest official guidance and your own agreement.
- OpenAI: Multi-currency billing
- OpenAI: Subscription access and account changes
- OpenAI: Avoiding duplicate subscription charges across platforms
- Apple: Change your Apple Account country or region
- AISub: US ChatGPT Plus web quote
- AISub: US ChatGPT Plus App Store quote
- AISub: Japanese ChatGPT Plus web quote
- AISub: Japanese ChatGPT Plus App Store quote
- AISub: Pricing methodology
This guide draws on the public sources listed below. Examples illustrate the calculation methods. AISub is an independent price index and is not affiliated with the product providers discussed.