PARALLEL / RAINBOW by GFRIEND (여자친구) has sold 100,255 copies in Korea.
PARALLEL / RAINBOW certifications and sales
| Country / region | Sales | Certification / source | Certification date / sales as of | |
 Korea |
100,255 | RIAK / Gaon charts |
Korea Sales: 100,255
Certification / note: RIAK / Gaon charts
Certification Date / sales as of:
|
|
| Total sales | 100,255 | (in 1 country) |
Total
Sales: 100,255
(in 1 country)
|
Year-end chart performance for PARALLEL / RAINBOW
| Chart 2017 | Rank | Sales |
| South Korean Albums (Gaon) First issue Parallel |
58 | 62,781 |
| South Korean Albums (Gaon) Repackage Rainbow |
91 | 37,474 |