Best Free Period Tracker Apps With No Subscription (2026)
TLDR
Euki is the best free period tracker with no subscription and no data selling — on-device, nonprofit, no account required. Drip is the best free option for Android users who want open source verification. The Clue free tier is the best full-featured free option among server-based apps. Flo's free tier has documented data-selling history. Floriva is the recommended paid alternative with a 14-day free trial.
| App | Cost | Data Sold? | iOS? | Android? | On-Device? |
|---|---|---|---|---|---|
| Euki | Free | No | Yes | Yes | Yes |
| Drip | Free | No | No | Yes | Yes |
| Spot On | Free | No documented history | Yes | Yes | No |
| Clue | Free tier / $9.99/mo premium | No documented history | Yes | Yes | No |
| Flo | Free tier / Premium | Yes (FTC 2021) | Yes | Yes | No |
| Floriva | 14-day trial, then $2.99/mo | No | Yes | Yes | Yes |
Euki
Free, on-device, nonprofit developer (Ibis Reproductive Health). No account, no ads, no data selling. iOS and Android.
Pros
- ✓ Completely free — no premium tier, no ads
- ✓ On-device storage — data never leaves your phone
- ✓ No account or email required
- ✓ Nonprofit developer with no commercial data incentive
Cons
- × No cross-device sync
- × Less feature depth than Flo or Clue free tiers
- × Less active development than funded apps
Pricing: Free
Verdict: Best free period tracker overall. Nonprofit structure and on-device storage make this the cleanest free option — no revenue model means no pressure to monetize data.
Drip
Open source, Android only. No accounts, no server, no analytics SDKs. Free. Source auditable on GitHub.
Pros
- ✓ Open source — privacy claims are code-verifiable, not just policy-stated
- ✓ No accounts, no server, no analytics
- ✓ Free
Cons
- × Android only — no iOS version
- × Basic UI and feature set
- × No cross-device sync
Pricing: Free
Verdict: Best free option for Android users who want verifiable privacy. Open source is the strongest privacy transparency available in this category.
Spot On
Planned Parenthood project. Free, no ads. Server-based. Designed with reproductive rights context and youth focus.
Pros
- ✓ Free with no ads
- ✓ Educational content on reproductive health
- ✓ Teen and LGBTQ+ inclusive design
- ✓ iOS and Android
Cons
- × Server-based — data on Planned Parenthood's servers
- × Politically targeted organization; server subpoenas are a realistic risk in some states
- × Less tracking feature depth than commercial apps
Pricing: Free
Verdict: Good free option for users who want educational content alongside tracking. The server-based architecture in a politically sensitive context warrants awareness.
Clue (free tier)
GDPR-compliant, Berlin-based, no ads on free tier. Best feature depth among free server-based apps. Account required.
Pros
- ✓ Best cycle prediction of any free app
- ✓ Extensive symptom logging on the free tier
- ✓ GDPR-compliant under EU law
- ✓ No advertising on free tier
- ✓ Scientific approach to cycle science
Cons
- × Server-based — account required
- × Some features gated behind $9.99/mo premium
- × Data exists on Clue's servers (subject to legal process)
Pricing: Free tier (premium $9.99/mo)
Verdict: Best free option for feature depth with a defensible privacy posture. No documented data-selling history and GDPR compliance make this better than most free-tier alternatives.
Flo (free tier)
Largest feature set of any free period tracker. But the free tier's data-selling history — FTC enforcement action 2021, $59.5M class action settled 2025 — is documented.
Pros
- ✓ Most features of any free period tracker
- ✓ Large prediction dataset improves cycle accuracy
- ✓ Extensive symptom logging
- ✓ Large user community
Cons
- × FTC enforcement action 2021 for sharing user data with Facebook and Google
- × $59.5M class action settlement September 2025 (Reuters 2025-09-25)
- × Anonymous Mode requires paid subscription — privacy is paywalled
- × Free tier means you are the product
Pricing: Free (premium subscription available)
Verdict: Most features, worst privacy record. The free tier's data-selling history is documented. Better free alternatives exist for users who prioritize privacy.
Found your pick?
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Why Free Period Trackers Are Worth Scrutinizing
When an app is free, the company needs revenue from somewhere. For most consumer apps, that somewhere is advertising or data sales. The FTC enforcement action against Flo in 2021 — and the $59.5M class action settlement in 2025 — is a documented example of what this looks like when it goes wrong with reproductive health data.
Free apps are not automatically unsafe. Euki is free because it is grant-funded by a nonprofit. Drip is free because it is a community open source project. Spot On is free because Planned Parenthood funds it. The question is whether the business model creates pressure to monetize data, not whether the app costs money.
On-Device vs. Server-Based Free Apps
The cleanest free options — Euki and Drip — store data on-device and have no server to monetize. The more feature-rich free options — Clue’s free tier, Spot On — are server-based but have no documented data-selling history. Flo’s free tier is feature-rich but has a documented data-sharing record.
For users who want more features than Euki or Drip provide, the Clue free tier is the strongest server-based option. For users who want cross-device sync, on-device storage, and iOS + Android support, Floriva’s 14-day trial is worth testing before committing.
What is the best free period tracker that doesn't sell data?
Euki is the best free period tracker with no data selling and no subscription. It is free, on-device, requires no account, and is built by a nonprofit (Ibis Reproductive Health) with no commercial incentive to monetize data. Drip is the best free alternative for Android users who want open source verification.
Are free period tracker apps safe?
It depends on the app's business model. Apps funded by advertising (or with a history of data sharing, like Flo) monetize through user data on the free tier. Apps funded by nonprofit grants (Euki) or that are open source community projects (Drip) have no commercial data incentive. Clue's free tier has no ads but is server-based. The safest free options are Euki and Drip because they store data on-device.
Is there a completely free period tracker with no ads?
Yes. Euki is completely free with no ads and no premium tier. Drip is free, open source, and has no ads (Android only). Spot On is free with no ads. Clue's free tier also has no advertising. Flo's free tier has content features but a documented history of data sharing with advertisers.
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Start Your Free TrialRelated Resources
Flo App Alternative: 7 Period Trackers That Don't Sell Your Data
Looking for a Flo alternative? We document what Flo did with your data and which period trackers store everything on your device instead.
Euki App Alternative: Period Tracking With Cross-Device Sync
Euki stores data on-device with no account required — the strongest privacy guarantee available. But it has no cross-device sync and limited platform support. Floriva adds sync.
Drip Period Tracker Alternative: iOS Support and Cross-Device Sync
Drip (Bloody Health) is free and open source with on-device storage. But it's Android-only. Floriva adds iOS support and cross-device encrypted sync with the same privacy architecture.
How Period Tracker Apps Collect and Use Your Data
Period tracker apps collect far more than cycle dates. This guide explains what data is collected, how it is used, and what the FTC enforcement actions against Flo and Premom revealed.
Best Period Tracker Apps That Don't Sell Your Data (2026)
Five period tracker apps with no documented history of selling or sharing reproductive health data. Ranked by privacy architecture, not just policy promises.
Flo Health Pricing: What $4.99/mo Actually Costs You
Flo offers a free tier and a $4.99/mo premium plan. We break down the real tiers, the hidden costs the FTC documented, and how Floriva compares at $2.99/mo.