Comparison

Tempdrop vs Luna Tracker

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Tempdrop

This app works with a specialized thermometer to track subtle overnight temperature changes. It helps identify hormonal fluctuations throughout the menstrual cycle, pinpoint ovulation, and predict cycle phases. The data supports fertility awareness and cycle tracking.

Highlights
  • Basal body temperature tracking
  • Ovulation pinpointing
  • Menstrual cycle prediction
  • Hormonal fluctuation correlation
  • Fertility awareness support
Features
Read full description

The Tempdrop app is designed to complement the Tempdrop device - a personalized user-specific thermometer that captures minute temperature variations throughout the night to pinpoint the basal body temperature. Detected variations in temperature correlate with hormonal fluctuations throughout the menstrual cycle. When used with the Tempdrop device, this app can help users to pinpoint ovulation and effectively track and predict the varying phases of the cycle. Disclaimer: The Tempdrop sensor and app are intended as complementary instruments to enhance your ability to monitor your fertility and share health details. The app and its wearable sensor, in themselves, are not, nor are they intended to be, a fertility monitor, a substitute for contraception, or a birth control method. We recognize the need of some to use the data and information provided to support ongoing health and menstrual cycle tracking, however, it is important to note that this should NOT be used as a substitute for an in-presence qualified professional, medical analysis, advice, guidance, or treatment. We strongly advise seeking a qualified Fertility Awareness instructor or other self-teaching resources to learn a symptothermal method and support your fertility journey. The provided interpretations and prediction guidelines are not suitable for use with irregular cycles. Optimal performance is dependent on correct and consistent use. Individual usage, wearing, input, and circumstances can affect the data. The user is fully responsible for the individual data inputs. The Tempdrop Sensor is approved for use in the USA, and is registered in the FDA database under registration number 3016099071. The device is classified as "Device, Fertility Diagnostic, Proceptive”. A link to the terms of use - https://www.tempdrop.com/pages/tos A link to the privacy policy - https://www.tempdrop.com/pages/privacy-policy

About

Luna Tracker

This app helps you track your menstrual cycle, ovulation tests, and basal body temperature. It provides insights into your fertile windows and period dates, allowing you to organize and review your health records privately and offline.

Highlights
  • LH and BBT charting
  • Cycle insight and prediction
  • Ovulation test logging with photos
  • Period, intimacy, and memo records
  • Temperature tracking (Celsius/Fahrenheit)
  • Data export and import
  • Private and offline storage
Features
Read full description

Luna Tracker is a private ovulation and cycle tracking app for recording LH ovulation tests, basal body temperature (BBT), period days, estimated fertile windows, test strip photos, intimacy records, and notes in one place. If you are trying to conceive or want to better understand your menstrual cycle and body rhythm, Luna Tracker helps you organize your ovulation test results and cycle records clearly. Recommended for: • Tracking LH ovulation tests and test strip photos • Viewing LH levels and BBT together • Reviewing estimated period, ovulation, and fertile window information • Comparing past cycle records • Keeping sensitive health records private and offline Key features: • LH + BBT chart: View LH levels and basal body temperature in one chart. Follow LH changes, positive results, and temperature trends in your current cycle. • Cycle Insight: Estimate your next period date, ovulation day, and fertile window based on your records. • Cycle History: Compare cycle length, period days, LH positive days, estimated fertile windows, intimacy records, and notes. • Ovulation test log: Record LH values, positive/negative results, and ovulation test strip photos. Crop and save strip images by date. • Period, intimacy, and memo records: Keep daily details together with your LH test history. • Temperature tracking: Record basal body temperature in Celsius or Fahrenheit. • Export and import: Export records as Excel, PDF, and test strip images. Import exported data for backup or device changes. • Private and offline: Your records are stored on your device. No account is required for the main features. • Multi-language support: Supports English, Korean, Japanese, Chinese, Spanish, French, German, Portuguese, Arabic, Italian, and Thai. Important: Luna Tracker is a supportive tool for personal records and cycle awareness. Period, ovulation, and fertile window information is estimated from the records you enter and does not replace medical advice, diagnosis, or treatment.

Screenshots

Tempdrop4 screens
Luna Tracker4 screens

Verdict

The call

The clearest difference is rating: Luna Tracker at 5.0 against Tempdrop's 4.2. Luna Tracker also leads on in-app purchases (none vs 6). Tempdrop's advantage is ads (none vs shown) and ratings volume (714 vs 1). On price and update cadence there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Tempdrop sells 6 in-app purchases, starting at $2.99 per month. Luna Tracker asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Luna Tracker holds the better App Store score, 5.0 against 4.2. That said, the two scores are not equally well evidenced: Tempdrop has 714 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on November 6, 2026 and November 5, 2026 respectively.

Scorecard7 real differences · 3 level
Tempdrop versus Luna Tracker: the parameters behind the verdict, then further details
ParameterTempdropLuna Tracker
PriceFreeFree
Rating4.2 (714 ratings)5.0 (1 ratings) — better
Positive reviews38.7% of reviews—
Number of ratings714 — better1
Update frequencyEvery 2 monthsEvery 2 months
AdsNo — betterYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesAd-supported — better
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.0 — better17.6
Further details — not scored
Size107 MB19 MB
Age rating17+17+
DeveloperTempdrop IncDiaVision Inc

Bugs and requests

Tempdrop

Reported bugs

4 issues
  • App crashes and freezes
  • Issues with syncing device data
  • Inaccurate cycle predictions and phase tracking
  • Temperature data changes over time

Requested features

5 requests
  • Improved sleep tracking capabilities
  • More customizable symptom and data tracking
  • Ability to manually confirm ovulation
  • Integration with other fertility/health apps
  • Support for irregular cycles and postpartum/breastfeeding phases

Luna Tracker

Not enough reviews yet to summarise bugs or requests.

In-app purchases

6 purchases

Tempdrop

Subscriptions6
  • Tempdrop Promo Premium monthly2 Months trial$2.991 Month
  • Tempdrop Premium monthly2 Months trial$6.001 Month
  • Tempdrop Promo Premium quarterly2 Months trial$7.993 Months
Show 3 more
  • Tempdrop Premium quarterly2 Months trial$15.003 Months
  • Tempdrop Promo Premium yearly2 Months trial$24.991 Year
  • Tempdrop Premium yearly*2 Months trial$48.001 Year
None

Luna Tracker

No in-app purchases

Questions

Is Tempdrop free?
Tempdrop is free to download, with in-app purchases available.
Is Luna Tracker free?
Luna Tracker is free to download, with no in-app purchases.
Which has better reviews, Tempdrop or Luna Tracker?
Luna Tracker is rated higher. Tempdrop averages 4.2 out of 5 from 714 ratings, while Luna Tracker averages 5.0 from 1 ratings.
Do Tempdrop or Luna Tracker have ads?
Luna Tracker shows ads; Tempdrop does not.
Which is updated more often, Tempdrop or Luna Tracker?
Tempdrop ships an update every 2 months, and Luna Tracker every 2 months. Most recently, Tempdrop was updated on November 6, 2026 and Luna Tracker on November 5, 2026.

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