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Check my usage before the optimal plan notifications. Count how much data I have left over each month and compare it with candidate plans.

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Sep 27, 2026
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딱요금 - 최적요금제 비교·통신비 절감 APP

Starting October 1, 2026, telecommunications companies must inform users of their "optimal rate plans."

Article 32-21 of the Telecommunications Business Act — This is an obligation to notify users of a rate plan that suits them by analyzing their rates, terms of use, and usage patterns.

However, even if you receive this notification, the decision ultimately rests with you. If you do not know how many GB you use per month, or how much of your current plan is being wasted, you cannot determine if the claim that "there is a cheaper option" is true.

Ttak-Ye-Ram is a calculator that allows you to establish that standard yourself.

■ Record by Month

If you record data, calls, and texts on a single line each month, you can capture the average for the past three months.

It does not require call logs or text permission — you simply need to copy the values ​​from the carrier's app or your statement.

■ The Value Left Behind by Your Current Rate Plan

It calculates how much GB remains from your monthly allowance and how much that translates to in monetary terms (Monthly Fee ÷ Allowance = Price per GB). Conversely, if the average exceeds the provided allowance, it tells you how many GB is missing.

■ Comparing with Candidates

If you add a plan you are considering switching to, it shows the difference in monthly and annual costs.

It does not place the cheapest option at the top — the plan that fits your average comes first, and for candidates that fall short, simply note that they are insufficient.

■ Notification Effective Date and Basis

It counts the days remaining until implementation and displays exactly what the legal text requires.

Since the notification cycle and target operators are values ​​determined by official notice, simply write "Not yet notified."

■ Things to Check When Received a Notice

Five conditions: remaining contract duration, selective contract discount, bundle discount, data carryover, and exceeding the provided allowance.

If you select and save the checked items, they remain on the next turn.

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· It is an on-device tool. What you enter remains only on the device and is not sent anywhere.

· It does not ask for identity information such as name, phone number, resident registration number, or bank account number. There is no login required.

· It does not have a rate plan table. All values ​​are entered by the user, and no rate plans are recommended.

· Since the standard values ​​of the system may change, they are not stored within the app but are updated remotely. If there is no network connection, it reverts to the last value.

⚠️ This is an unofficial reference calculator. It is not affiliated with any telecommunications company or organization, and it does not handle subscriptions, changes, or inquiries on your behalf.

Since the actual billed amount varies depending on the contract, bundles, value-added services, and discounts, you must verify the exact value with your subscribed provider.
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