Period tracking apps:Which are searched most?
In September 2026, Flo was the most searched among period tracking apps worldwide, with an estimated 84.2K branded searches and 46.3% estimated Share of Search within this set. These are worldwide searches for English-language branded terms.
Flo46.3%
Natural Cycles35.2%
Clue13%
Stardust5.5%
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Share of SearchLeaderboard
Compare the period and fertility tracking apps people use. Branded searches tell you how often people look for a brand by name or related terms. Comparing these searches across competitors helps you see how popular each brand is over time.
Share of Search by month for Flo, Natural Cycles, Clue, Stardust. The figures are in the table below the chart.
View monthly share of search table
| Month | Flo | Natural Cycles | Clue | Stardust |
|---|---|---|---|---|
| Oct 2025 | 47.8% | 36.2% | 11.3% | 4.8% |
| Nov 2025 | 46.7% | 38.3% | 9.9% | 5.1% |
| Dec 2025 | 41.9% | 43.4% | 10.8% | 3.9% |
| Jan 2026 | 44.9% | 40.6% | 10.9% | 3.6% |
| Feb 2026 | 52.7% | 33.4% | 10.1% | 3.8% |
| Mar 2026 | 47.1% | 36.4% | 12.2% | 4.2% |
| Apr 2026 | 45.2% | 34.6% | 15.6% | 4.6% |
| May 2026 | 52% | 30% | 14.2% | 3.8% |
| Jun 2026 | 54% | 28.6% | 12.9% | 4.4% |
| Jul 2026 | 54% | 27.5% | 13.3% | 5.1% |
| Aug 2026 | 42.8% | 38.5% | 13.6% | 5% |
| Sep 2026 | 46.3% | 35.2% | 13% | 5.5% |
This month’s ranking, September 2026
| Rank | Brand | Share of Search | Estimated monthly branded searches | vs prior month | Share change |
|---|---|---|---|---|---|
| 1, held 1st | 46.3% | 84.2K | -6.1% | +3.4 points | |
| 2, held 2nd | 35.2% | 64.1K | -20.5% | -3.3 points | |
| 3, held 3rd | 13% | 23.7K | -17.2% | -0.6 points | |
| 4, held 4th | 5.5% | 10K | -4.8% | +0.5 points |
1.
Flo46.3%
Held 1st. 84.2K estimated branded searches, -6.1% vs prior month. Share +3.4 points.
35.2%
Held 2nd. 64.1K estimated branded searches, -20.5% vs prior month. Share -3.3 points.
3.
Clue13%
Held 3rd. 23.7K estimated branded searches, -17.2% vs prior month. Share -0.6 points.
4.
Stardust5.5%
Held 4th. 10K estimated branded searches, -4.8% vs prior month. Share +0.5 points.
Compare search popularity between leading brands
- Flo vs Natural Cycles: compare search popularity
- Flo vs Clue: compare search popularity
- Flo vs Stardust: compare search popularity
- Natural Cycles vs Clue: compare search popularity
- Natural Cycles vs Stardust: compare search popularity
- Clue vs Stardust: compare search popularity
- Compare any of these brands
Which brand is most popular in search among period tracking apps worldwide?
4 brands
In September 2026, Flo was the most searched among period tracking apps worldwide, with an estimated 84.2K branded searches and 46.3% estimated Share of Search within this set. Natural Cycles is in 2nd place, 11 percentage points behind at 35.2% Share of Search.
| Brand | Share of Search | Peak | Low | Rank |
|---|---|---|---|---|
| Flo | 47.8% → 46.3% | 54%Jul 2026 | 41.9%Dec 2025 | 1st |
| Natural Cycles | 36.2% → 35.2% | 43.4%Dec 2025 | 27.5%Jul 2026 | 2nd |
| Clue | 11.3% → 13% | 15.6%Apr 2026 | 9.9%Nov 2025 | 3rd |
| Stardust | 4.8% → 5.5% | 5.5%Sep 2026 | 3.6%Jan 2026 | 4th |
Each finding as a sentence
- Across the 12 months ending September 2026, Flo’s estimated Share of Search among period tracking apps worldwide decreased from 47.8% to 46.3%.
- Across the 12 months ending September 2026, Natural Cycles’ estimated Share of Search among period tracking apps worldwide decreased from 36.2% to 35.2%.
- Across the 12 months ending September 2026, Clue’s estimated Share of Search among period tracking apps worldwide increased from 11.3% to 13%.
- Across the 12 months ending September 2026, Stardust’s estimated Share of Search among period tracking apps worldwide increased from 4.8% to 5.5%.
- Across the 12 months ending September 2026, Flo’s estimated Share of Search among period tracking apps worldwide peaked at 54% in July 2026 and was lowest at 41.9% in December 2025.
- Across the 12 months ending September 2026, Natural Cycles’ estimated Share of Search among period tracking apps worldwide peaked at 43.4% in December 2025 and was lowest at 27.5% in July 2026.
- Across the 12 months ending September 2026, Clue’s estimated Share of Search among period tracking apps worldwide peaked at 15.6% in April 2026 and was lowest at 9.9% in November 2025.
- Across the 12 months ending September 2026, Stardust’s estimated Share of Search among period tracking apps worldwide peaked at 5.5% in September 2026 and was lowest at 3.6% in January 2026.
How did search popularity change for period tracking apps worldwide in September 2026?
4 changes
In September 2026, Flo gained estimated Share of Search among period tracking apps worldwide, from 42.8% to 46.3%.
In September 2026, Natural Cycles lost estimated Share of Search among period tracking apps worldwide, from 38.5% to 35.2%.
In September 2026, Clue lost estimated Share of Search among period tracking apps worldwide, from 13.6% to 13%.
Estimated monthly branded searches for Stardust worldwide rose 17.6% over 12 measured months, from 8.5K to 10K in September 2026.
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