Diaphragm
vs
Fertility Awareness
A side-by-side comparison of two birth control methods — efficacy, cost, how they work, and who shouldn't use them.
Side-by-side comparison
| Method |  DiaphragmA reusable silicone dome that covers the cervix to block sperm, used with spermicide each time you have sex. |  Fertility AwarenessTracking body signs like temperature and cervical mucus to identify fertile days and avoid unprotected sex then. |
|---|---|---|
| Efficacy | 83% typical use Least effective: under 90 out of 100 people successfully prevent pregnancy per year. | Least effective see details Least effective: under 90 out of 100 people successfully prevent pregnancy per year. |
| Cost | $80–$200 Insurance: Usually | $0–$100 /monthly Insurance: Varies |
| Duration | Reusable for 1-2 years (replace every 1-2 years or sooner if damaged) | Ongoing daily tracking |
| Reversibility | Reversible | Reversible |
| STI Protection | No | No |
| How it works | A reusable silicone dome covers the cervix to block sperm from entering the uterus. Used with spermicide for added effectiveness. | Track basal body temperature, cervical mucus, and cycle length to identify the fertile window. Avoid unprotected sex or use backup contraception on fertile days. |
| Prescription | Required Prescription required | OTC No prescription / OTC |
| Available Products | 2 products | 4 products |
| Side effects |
| None reported |
| Who shouldn't use this |
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