| Cost | Free | Free | Free | Free | Free | Free |
| Test time (minutes) | 5 | 3 | 3–5 | 8 | 3–5 | 5 |
| Tests for | Tone frequency | Tone frequency | Tone frequency | Tone frequency | Background noise | Hearing experience |
| Email address required | Yes | Yes | Yes | Yes | No | No |
| Results | By email | By email | By email and immediately | By email and immediately | Immediately | Immediately |
| Follow up | Yes | Yes | Yes | Yes | No | Yes |
