Ring Sizer Does your ring size change during pregnancy, and how can you track it?
Measure once early on and again later with the same method, save both, and compare. The free app keeps one saved measurement, so for two you need Premium or a rewarded ad, which is the main limitation to plan around.
Fingers can swell in pregnancy, and a snug ring is often the first sign. How much varies a lot, and the app cannot predict it or explain why yours changed. Sudden swelling, or swelling with other symptoms, is a doctor question, not a ring sizer one.
A routine that gives consistent results
- Calibrate once under Calibration. Do not redo it between sessions, or you are comparing two different rulers.
- Measure the finger with Finger Sizer (no ring needed) at the same time of day each time.
- Tap Save Measurement.
- Repeat a few weeks later, same finger, same hand, same time.
- Open Measurement History and look at the dates and sizes.
Measuring in the evening, in a room at normal temperature, gives the most consistent reading. Fingers change with heat and salt through the day, so a one-off morning reading misleads.
Worked example with made-up readings
| Saved | Diameter | Circumference | US size |
|---|---|---|---|
| Early | 17.2 mm | 54.0 mm | 7 |
| Later | 18.1 mm | 57.0 mm | 8 |
| Change | 0.9 mm | 3 mm | 1 size |
Invented numbers, not averages for anyone. What to take from it: 0.9 mm is about one US size in this app's table.
The free-limit annoyance
Free gives you one saved measurement. The second Save Measurement opens You've Reached the Free Limit with Watch Ad to Save, good for one extra save that day, twice a day at most. Premium removes the cap and adds the Size Comparator, which draws two saved measurements as circles and shows the diameter and US size difference. Without Premium or a second save, writing the first reading down on paper before it gets replaced keeps a record of it.
Questions and answers
Does ring size change during pregnancy?
How much does your ring size change with pregnancy?
Can I save several measurements for free?
What should I do if my ring no longer fits during pregnancy?
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- Ring size conversion chart: US, UK, EU and Japanese sizes
- Which finger to measure for your ring size
- Choosing a ring metal: gold, platinum, titanium and more
- Birthstone by month: a chart for all 12 months
- How to clean and care for a ring at home
- Compare two ring sizes: how big is the difference?
- Ring size in Mexico vs the US: how do you convert?
- Ring no longer goes over your knuckle: which size now?
- All questions about Ring Sizer
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