Glow vs Spot On:Which is more popular?
In September 2026, Glow had more branded searches than Spot On among period tracking apps worldwide. Glow had about 2,900 branded searches, while Spot On had 1,720. Glow made up 1.5% of all period tracking app searches we track, and Spot On accounted for 0.9%. When we asked ChatGPT and Google AI Overviews about period tracking apps, Spot On appeared in two of the five answers and Glow in none.
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Top period tracking apps in ChatGPT and Google AI Overviews
In three ChatGPT questions and two Google AI Overviews, Spot On was mentioned in two out of five: not in any of the three ChatGPT answers, but in both Google AI Overviews. Glow did not appear in any of the five answers.
Most recommended by AI
Brands get a higher ranking if they are mentioned earlier in the answers.
Mentioned by AI
Each dot is one answer, filled in when that answer mentions the brand.
Clue5 of 5Named in 3 of 3 ChatGPT answersNamed in 2 of 2 Google answers
Flo4 of 5Named in 2 of 3 ChatGPT answersNamed in 2 of 2 Google answers
Euki4 of 5Named in 2 of 3 ChatGPT answersNamed in 2 of 2 Google answers
Spot On2 of 5Named in 0 of 3 ChatGPT answersNamed in 2 of 2 Google answers
Natural Cycles1 of 5Named in 1 of 3 ChatGPT answersNamed in 0 of 2 Google answers
Stardust1 of 5Named in 1 of 3 ChatGPT answersNamed in 0 of 2 Google answers
Glow0 of 5Named in 0 of 3 ChatGPT answersNamed in 0 of 2 Google answers
Ovia0 of 5Named in 0 of 3 ChatGPT answersNamed in 0 of 2 Google answers
See every answer about period tracking apps
5 answers
Asked ChatGPT
“Which period tracking app should I use?”
Asked ChatGPT
“What are the best period tracking apps?”
Asked ChatGPT
“What's the best period tracking app for fertility tracking?”
Searched Google, AI Overview
“period tracking apps”
Searched Google, AI Overview
“cycle tracking app”
Brands are shown in the order each answer named them. The survey took place in the United States on October 21, 2026.
Is Glow or Spot On more popular in search?
This chart shows how often people search Google for Glow and Spot On by name. Each line represents a brand's share of searches for all eight period tracking apps we track, month by month, from English-language searches worldwide.
Share of searches by month for Glow, Spot On. The figures are in the table below the chart.
View monthly share of searches table
| Month | Flo | Natural Cycles | Clue | Stardust | Euki | Glow | Spot On | Ovia |
|---|---|---|---|---|---|---|---|---|
| Oct 2025 | 46.1% | 34.9% | 10.9% | 4.6% | 1.3% | 0.8% | 0.47% | 1% |
| Nov 2025 | 45% | 37% | 9.5% | 4.9% | 1.3% | 0.85% | 0.55% | 0.88% |
| Dec 2025 | 40.5% | 41.9% | 10.4% | 3.7% | 1.5% | 0.78% | 0.46% | 0.78% |
| Jan 2026 | 43.5% | 39.4% | 10.6% | 3.5% | 1.2% | 0.61% | 0.4% | 0.83% |
| Feb 2026 | 50.8% | 32.2% | 9.8% | 3.7% | 1.4% | 0.75% | 0.54% | 0.76% |
| Mar 2026 | 45.5% | 35.2% | 11.8% | 4.1% | 1.3% | 0.78% | 0.62% | 0.72% |
| Apr 2026 | 43.4% | 33.3% | 15% | 4.4% | 1.5% | 0.89% | 0.76% | 0.79% |
| May 2026 | 50.1% | 28.9% | 13.7% | 3.7% | 1.3% | 0.9% | 0.66% | 0.68% |
| Jun 2026 | 52.1% | 27.6% | 12.5% | 4.2% | 1.2% | 1.1% | 0.68% | 0.67% |
| Jul 2026 | 52% | 26.5% | 12.8% | 4.9% | 1.2% | 1.3% | 0.64% | 0.62% |
| Aug 2026 | 40.9% | 36.8% | 13% | 4.8% | 1.7% | 1.5% | 0.67% | 0.67% |
| Sep 2026 | 43.9% | 33.4% | 12.3% | 5.2% | 1.9% | 1.5% | 0.9% | 0.81% |
How has the Glow and Spot On comparison changed over the last 12 months?
3 findings
- Glow was ahead of Spot On in every measured month of the 12 months ending September 2026.
- Across the 12 months ending September 2026, Glow’s share of searches among period tracking apps worldwide moved from 0.8% to 1.5%, and its estimated monthly branded searches moved from 1.5K to 2.9K.
- Across the 12 months ending September 2026, Spot On’s share of searches among period tracking apps worldwide moved from 0.47% to 0.9%, and its estimated monthly branded searches moved from 870 to 1.7K.
How did search popularity change for period tracking apps worldwide in September 2026?
2 changes
In September 2026, Spot On rose from 8th to 7th among period tracking apps worldwide.
Estimated monthly branded searches for Glow worldwide rose 97.3% over 12 measured months, from 1.5K to 2.9K in September 2026.
How are branded searches counted?
4 search terms
Brandwave collects information about searches that people make online using Glow’s and Spot On’s names. When viewed over time, estimated search volumes for these branded terms can be used to understand whether interest in the brands is growing, holding steady, or fading.
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