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graphPON enables you to see the usage of IIJmio SIM with some charts.

* Summary Chart
shows the total amount of data in the month or last 30 days.

* Daily Chart
shows the daily usage in the month or last 30 days.

* Ratio Chart
shows the ratio of usages of sims.

* Availability Chart
shows the available amount of data in the month.

* More
You can edit nickname of sims and change on/off of coupons.

** This is not an official app from IIJ/IIJmio. If you need support, please contact me from Support URL.
Yasuharu Ozaki