Tempdrop vs Harmony Within
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Basal body temperature tracking
- Ovulation pinpointing
- Menstrual cycle prediction
- Hormonal fluctuation correlation
- Fertility awareness support
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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
Harmony Within
Access guided meditations, movement, and breathing exercises designed to reduce stress, improve sleep, and enhance overall well-being. Practices integrate mindfulness, somatic psychology, and affirmations for a holistic mind-body connection. Unlock progress tracking and offline access with a subscription.
- Guided meditation
- Movement practices
- Breathing exercises
- Mindfulness integration
- Progress tracking
- Offline sync
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Follow guided meditation, movement and breathing practices to bring harmony to your mind and body. Practices incorporate mindfulness, gentle movement, breathing, affirmations, guided imagery, somatic psychology and more. Taking time to tune in for meditative self care has potential to reduce stress, improve sleep, raise hopefulness, sharpen your focus, and boost overall health and wellness. Installing the Harmony Within app is free of charge. Sign up for the introductory plan to experience the transformational magic of Harmony Within mind-body practices. INFORMATION ABOUT THE APP AND PURCHASE OPTIONS By signing up, you will get access to subscription(s) that include features such as progress tracking, and offline sync. The download of Harmony Within is free of charge. No free trial offered. Should you use Harmony Within app to access in-app content via available subscription(s), a payment will be charged to your credit card through your App Store account . A subscription renews automatically unless canceled at least 24 hours prior to the end of the subscription period. There is no increase in price when renewing. Subscription(s) can be managed and auto-renewal turned off in Account Settings in the App Store after purchase. Read our full Terms of Service and our Privacy Policy: https://passion.io/terms-of-service https://passion.io/privacy-policy
Screenshots
Verdict
The clearest difference is review sentiment: Harmony Within at 100% against Tempdrop's 38%. Harmony Within also leads on rating (5.0 vs 4.2) and update cadence (monthly vs every 3 months). Tempdrop's advantage is ads (none vs shown) and ratings volume (710 vs 1). On price, in-app purchases, monetization model and device support 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
Both are free to download. Tempdrop sells 6 in-app purchases, starting at $2.99 per month and Harmony Within sells 2 in-app purchases, starting at $10.00 per month. Whichever you choose, the download price is not the number that matters.
Harmony Within holds the better App Store score, 5.0 against 4.2. That said, the two scores are not equally well evidenced: Tempdrop has 710 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 38% of Tempdrop's written reviews are positive against 100% of Harmony Within's.
Tempdrop ships an update every 3 months, Harmony Within monthly. The most recent releases landed on October 13, 2026 and September 24, 2026 respectively.
| Parameter | Tempdrop | Harmony Within |
|---|---|---|
| Price | Free | Free |
| Rating | 4.2 (710 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 38.3% of reviews | 100.0% of reviews — better |
| Number of ratings | 710 — better | 1 |
| Update frequency | Every 3 months | Monthly — better |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 103 MB | 87 MB |
| Age rating | 17+ | 4+ |
| Developer | Tempdrop Inc | Harmony Within Creations LLC |
Customer experience
Tempdrop
Harmony Within
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
Harmony Within
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Tempdrop
- 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
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- 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
Harmony Within
- Harmony Wellness$10.001 Month
- Harmony Fertility$25.001 Month
Questions
Is Tempdrop free?
Is Harmony Within free?
Which has better reviews, Tempdrop or Harmony Within?
Do Tempdrop or Harmony Within have ads?
Which is updated more often, Tempdrop or Harmony Within?
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