Comparison

Naia vs Mint Water Tracker

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

Head to head
About

Naia

Features
Read full description

Naia is a fertility and ovulation tracker for people actively trying to conceive. It narrows your fertile window to your two best days, and then does the thing no calendar can: it tells you afterwards whether ovulation actually happened. TIME IT RIGHT THIS MONTH Your fertile window is about six days long, and it moves. Naia reads your own signals, LH tests, waking temperature and cervical mucus, and puts a probability on today instead of painting a ten-day band. When your window opens you see your two best days, not a blob. THEN KNOW IT ACTUALLY HAPPENED An LH test says your body is getting ready. It never proves an egg was released. Naia watches for the temperature shift that only follows ovulation, or a positive PdG test, and then tells you plainly: ovulation confirmed, and the day it happened. If a cycle shows no confirming sign, Naia says that too, and after repeated cycles without signs it suggests a conversation with your doctor. It will never tell you that you did not ovulate; it reports what was and was not observed. YOUR TEMPERATURE IS THE PROOF A resting temperature that rises and stays up for three days is the classic confirmation signal. Naia charts it in real degrees on a real scale, alongside your LH results, so you can see the evidence, not just a verdict. Wrist temperature from Apple Watch imports automatically through Apple Health. MOST APPS GUESS. NAIA MEASURES. Cycle history alone lands the right day about four times in ten, because the first half of your cycle can vary by weeks. Every cycle you log teaches Naia your own pattern: your typical ovulation day, your measured luteal phase, how your timing moves. The predictions get sharper because they are built from confirmations, not from a day-14 rule. LOG IT ALL IN SECONDS One sheet for the whole day: period, intercourse, LH result, temperature, mucus. Ten seconds a day is enough. Manual LH entry works with any brand of test strip. SHOW YOUR DOCTOR REAL DATA One report collects your record: cycles recorded, which were confirmed, your measured luteal phase, and how complete the data is. It renders as a PDF on your phone and shares from there. It is written in the language a clinician expects. PRIVATE BY ARCHITECTURE Your cycle data stays on your device. No ads, no selling of personal data, and no health information is ever sent to advertising or analytics networks. Deleting the app deletes the data. SUBSCRIPTION Naia Pro unlocks every feature: your narrowed fertile window, ovulation confirmation, and the full cycle chart. Two plans: Naia Pro Yearly at $49.99/year with a 7-day free trial, and Naia Pro Monthly at $12.99/month with no trial. Prices may vary by region and are shown in the app before any charge. Payment is charged to your Apple Account. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the period, and can be managed or cancelled in your Apple Account settings. Terms: https://troiva.com/terms Privacy: https://troiva.com/privacy Naia is not a medical device, does not diagnose or treat any condition, and does not provide contraception. Do not use it to prevent pregnancy.

About

Mint Water Tracker

Features
Read full description

Set a daily water goal that fits you in a minute, then log each drink with a single tap. Smart reminders back off after you drink, so you never get nagged right after a glass. - PERSONAL GOAL Your recommended intake is calculated from weight, age, activity and pregnancy/breastfeeding. Adjust it anytime. - ONE-TAP LOGGING Quick-add your usual cup or your most recent drink, with undo. 11 drink types including water, coffee, tea, juice, milk, sparkling water, sports drinks, soda, soup, beer & wine. Hydration factors (e.g. coffee counts as 80%) show how much actually hydrates you. - SMART REMINDERS Reminders reschedule after every drink and stop for the day once you hit your goal. Nothing is sent outside your wake/sleep hours. - STAY MOTIVATED Streaks, 18 achievements, streak freezes that protect a missed day, and a small celebration when you reach your goal. - STATS & INSIGHTS Weekly and monthly charts, edit any past day, drink breakdown and a time-of-day heatmap. - AND MORE Home screen widgets, ml or oz, dark mode, 25 languages, CSV export. - PRO LIFETIME (NO SUBSCRIPTION) One purchase removes ads and unlocks insights, drink analysis and the heatmap forever. Your logs stay on your device. No account required. Goals are general guidance, not medical advice. If you have a health condition, follow your doctor's advice.

Screenshots

Naia4 screens
Mint Water Tracker4 screens

Verdict

The call

Naia and Mint Water Tracker are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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. Naia sells 2 in-app purchases, starting at $12.99 per month and Mint Water Tracker sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Naia ships an update every 6 days, Mint Water Tracker every 4 days. The most recent releases landed on October 31, 2026 and October 26, 2026 respectively.

ScorecardNo meaningful differences
Naia versus Mint Water Tracker: the parameters behind the verdict, then further details
ParameterNaiaMint Water Tracker
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 6 daysEvery 4 days — better
AdsYesYes
In-app purchasesYesYes
DevicesiPhone, iPodiPhone, iPod
Requires iOS15.115.0 — better
Further details — not scored
Size69 MB52 MB
Age rating12+12+
DeveloperTroiva LLCmint-soft

In-app purchases

2 purchases

Naia

Subscriptions2
  • Naia Pro Monthly$12.991 Month
  • Naia Pro Yearly7 Days trial$49.991 Year
1 purchases

Mint Water Tracker

One-time1
  • Pro 평생 이용권$3.99

Questions

Is Naia free?
Naia is free to download, with in-app purchases available.
Is Mint Water Tracker free?
Mint Water Tracker is free to download, with in-app purchases available.
Do Naia or Mint Water Tracker have ads?
Both Naia and Mint Water Tracker show ads.
Which is updated more often, Naia or Mint Water Tracker?
Naia ships an update every 6 days, and Mint Water Tracker every 4 days. Most recently, Naia was updated on October 31, 2026 and Mint Water Tracker on October 26, 2026.

Other comparisons