| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| free sound machine for sleep | 1.57 | 0.8 | 9935 | 16 |
| sound machine for sleeping free | 0.25 | 0.8 | 4304 | 58 |
| sleep sound machine online free | 0.15 | 0.4 | 369 | 38 |
| sound sleep sound machine | 0.85 | 0.9 | 2256 | 5 |
| best sound machine for sleep | 1.22 | 0.7 | 6620 | 34 |
| sound machine for sleep app | 0.73 | 0.5 | 1303 | 86 |
| sound + sleep machine | 1.13 | 0.5 | 2968 | 26 |
| sleep sound machine with music | 1.15 | 0.8 | 5993 | 84 |
| the best sound machine for sleeping | 0.31 | 0.3 | 4766 | 44 |
| online sound machines for sleeping | 1.76 | 0.2 | 9431 | 24 |
| sleep machines with sounds | 0.44 | 0.9 | 5910 | 28 |
