Period vs TempCurve BBT Chart
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Period
Track your menstrual cycle, log period dates, ovulation test results, and symptoms. Gain insights into fertility probability based on your cycle length. This app helps predict periods and monitor cycles.
- Menstrual cycle tracking
- Period logging
- Ovulation test logging
- Symptom tracking
- Fertility probability insights
- Cycle length comparison
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View where you are in your cycle with the Period Tracker app. You have the option to manually log your periods, ovulation test results and keep track of your menstrual cycle symptoms. Get insights into how the probability of peak fertility varies for women with the same cycle length as you. This app is designed for use by women who want to predict their periods, track their cycles or try for a baby. It should not be used as a method of contraception.
TempCurve BBT Chart
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TempCurve is a simple, private iOS app for women trying to conceive (TTC) who want to track their basal body temperature (BBT) and confirm ovulation manually. Key features: - Log daily basal body temperature in Fahrenheit or Celsius - 3-over-6 rule algorithm to confirm biphasic temperature shifts and ovulation - Interactive temperature curve chart showing your last 10 records and Coverline - Physiological status dashboard showing confirmed ovulation date or logging guidance - History list grouped by month with swipe-to-delete action - Export BBT history to CSV or clear all data locally - Fully offline with no accounts, no ads, and no cloud data tracking TempCurve is designed for informational and general wellness purposes only. It is not intended to be used for contraception, medical advice, diagnosis, or treatment.
Screenshots
Verdict
The clearest difference is iOS requirement: Period at 13.0 against TempCurve BBT Chart's 17.0. On price, update cadence, ads and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
Both ship on a similar rhythm, roughly monthly. The most recent releases landed on October 18, 2026 and October 9, 2026 respectively.
| Parameter | Period | TempCurve BBT Chart |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (2.4K ratings) — better | — |
| Positive reviews | 53.8% of reviews | — |
| Number of ratings | 2.4K — better | — |
| Update frequency | Monthly | Monthly |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 13.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 56 MB | 4 MB |
| Age rating | 12+ | 4+ |
| Developer | SPD Development Company Ltd | 拥军 刘 |
Bugs and requests
Period
Reported bugs
3 issues- Dates and data getting changed after updates
- Calendar not populating after updates
- Whole calendar getting erased after updates
Requested features
2 requests- Add option to log basal body temperature
- Improve notification customization
TempCurve BBT Chart
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Period
No in-app purchases
TempCurve BBT Chart
No in-app purchases
Questions
Is Period free?
Is TempCurve BBT Chart free?
Do Period or TempCurve BBT Chart have ads?
Which is updated more often, Period or TempCurve BBT Chart?
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