Tempdrop vs ThermoRegisterPlus
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
ThermoRegisterPlus
Record your body temperature and basal body temperature data directly to Apple Health. This application allows manual entry of temperature readings from your phone, helping you track your health metrics.
- Register body temperature data
- Register basal body temperature data
- Data syncs to Health app
- Manual data entry via phone
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ThermoRegisterPlus can be register Body Temperature(&Basal Body Temperature) data Point to Health app for iOS. Features - Add Body Temperature Data by using your Phone - Add Basal Body Temperature Data by using your Phone(optional) ※iPhone do not have a mechanism for measuring body temperature. ThermoRegisterPlus is an app to register the measured value.
Screenshots
Verdict
The clearest difference is review sentiment: ThermoRegisterPlus at 100% against Tempdrop's 38%. ThermoRegisterPlus also leads on rating (5.0 vs 4.2) and iOS requirement (8.0 vs 15.0). Tempdrop's advantage is ads (none vs shown) and ratings volume (711 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 ThermoRegisterPlus sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
ThermoRegisterPlus holds the better App Store score, 5.0 against 4.2. That said, the two scores are not equally well evidenced: Tempdrop has 711 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 ThermoRegisterPlus's.
Tempdrop ships an update every 2 months, ThermoRegisterPlus every 14 months. The most recent releases landed on October 15, 2026 and October 4, 2026 respectively.
| Parameter | Tempdrop | ThermoRegisterPlus |
|---|---|---|
| Price | Free | Free |
| Rating | 4.2 (711 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 38.3% of reviews | 100.0% of reviews — better |
| Number of ratings | 711 — better | 1 |
| Update frequency | Every 2 months — better | Every 14 months |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.0 | 8.0 — better |
| Further details — not scored | ||
| Size | 103 MB | 9 MB |
| Age rating | 17+ | 4+ |
| Developer | Tempdrop Inc | Airwire products. |
Customer experience
Tempdrop
ThermoRegisterPlus
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
ThermoRegisterPlus
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
ThermoRegisterPlus
- ThermoRegister Pro ver.$0.99
Questions
Is Tempdrop free?
Is ThermoRegisterPlus free?
Which has better reviews, Tempdrop or ThermoRegisterPlus?
Do Tempdrop or ThermoRegisterPlus have ads?
Which is updated more often, Tempdrop or ThermoRegisterPlus?
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