Comparison

Nitro Athletic Complex vs Health Diary

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

Head to head
About

Nitro Athletic Complex

This app guides your health and fitness journey by allowing you to book classes online. It integrates with Apple Health to track daily steps, distance, and calories burned, and can import data from wearable devices.

Highlights
  • Online class booking
  • Apple Health integration
  • Step tracking
  • Distance tracking
  • Calorie tracking
  • Wearable device data import
Features
Read full description

Guiding you through your health and fitness journey! - Book classes online in just a few clicks Apple Health App Integration Track your progress with our HealthKit app integration to import and measure your daily steps, distance or calories burnt. Also use HealthKit to import your data from a range of different wearable devices.

About

Health Diary

Features
Read full description

Health Diary helps you write how your body feels, turn everyday notes into clear health records, and get small actions you can actually finish today. Remembering your health story shouldn’t be hard. Most “health” apps focus on steps, workouts, and heart rate, or require long forms to fill out. Helpful, but not always useful when you’re dealing with everyday discomfort, low energy, poor sleep, stress, or small changes in how your body feels. Health Diary focuses on what matters: how you feel, what might be affecting it, what you can do today, and how it changes over time. Write naturally, just like a diary: “My head felt heavy this morning and got worse in the afternoon. I rested for 20 minutes, which helped a bit.” No long forms. No endless lists. Just write how your body feels in your own words. Health Diary can organize the important parts for you, including the main issue, body areas, severity, timing, duration, related sensations, possible triggers, and what helped. KEY FEATURES 1. Today Plan Start with a quick check-in, then get a few small actions you can actually finish today. Today Plan may suggest small, concrete actions like: • Walk for 10 minutes after dinner • Add protein to your next meal • Take a 3-minute breathing break • Log mood, energy, sleep, or discomfort before bed Connect Apple Health to make Today Plan more relevant with sleep, steps, workouts, and weight. 2. Natural-language health diary Record how you feel with just a few sentences. Health Diary helps turn your daily body notes into clear, structured records. 3. Useful statistics, not just step counts See patterns that are easier to miss from memory: • Most affected body areas • Common triggers • Severity changes over time • Recording frequency and high-symptom days • Flexible date ranges 4. Trend summaries that make sense Generate easy-to-read summaries for different time ranges, including recent patterns, key takeaways, weather factors, and next steps for self-reflection. 5. Doctor-ready timelines Choose a time range and review a clean timeline of what happened and when. Filter by severity, body area, trigger, weather, or other details so you can prepare for appointments with less guesswork. PERFECT FOR • Building daily awareness of your body • Turning vague discomfort into clear notes • Following small health actions each day • Spotting patterns over time • Preparing for doctor visits • Keeping a private health story you can look back on PRIVACY-FIRST Your diary is designed to stay private and personal. Your health notes are stored on your device. Optional features such as AI summaries, weather, Apple Health, and purchases use only the data needed to provide those features. ABOUT PRO FEATURES Health Diary offers optional Pro features with monthly, yearly, or lifetime access. Pro unlocks more complete Today Plans, advanced trend reports, enhanced doctor-ready timelines, and additional tools to help you understand your health more clearly. Subscriptions renew automatically unless canceled at least 24 hours before the end of the current period. You can manage or cancel your subscription anytime in your App Store account settings. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://healthdiary.cc/privacy Note: Health Diary is for personal tracking and awareness only. It does not provide medical diagnosis, treatment, or professional medical advice.

Screenshots

Nitro Athletic Complex2 screens
Health Diary4 screens

Verdict

The call

The clearest difference is in-app purchases: Nitro Athletic Complex at none against Health Diary's 3. Nitro Athletic Complex also leads on ads (none vs shown) and iOS requirement (14.0 vs 17.6). Health Diary's advantage is update cadence (every 2 weeks vs every 2 months). On price 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Health Diary sells 3 in-app purchases, starting at $3.99 per month. Nitro Athletic Complex asks for nothing beyond the download.

UpkeepUpdate frequency

Nitro Athletic Complex ships an update every 2 months, Health Diary every 2 weeks. The most recent releases landed on September 12, 2026 and September 26, 2026 respectively.

Scorecard4 real differences · 5 level
Nitro Athletic Complex versus Health Diary: the parameters behind the verdict, then further details
ParameterNitro Athletic ComplexHealth Diary
PriceFreeFree
Rating4.6 (26 ratings) — better—
Number of ratings26 — better—
Update frequencyEvery 2 monthsEvery 2 weeks — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPad, iPodiPhone, iPad, Apple Watch
Requires iOS14.0 — better17.6
Further details — not scored
Size56 MB17 MB
Age rating4+4+
DeveloperTeamUp Sports鲁 黄

In-app purchases

None

Nitro Athletic Complex

No in-app purchases

3 purchases

Health Diary

Subscriptions2
  • Health Diary Pro Monthly$3.991 Month
  • Health Diary Pro Yearly7 Days trial$19.991 Year
One-time1
  • Health Diary Pro Lifetime$59.99

Questions

Is Nitro Athletic Complex free?
Nitro Athletic Complex is free to download, with no in-app purchases.
Is Health Diary free?
Health Diary is free to download, with in-app purchases available.
Do Nitro Athletic Complex or Health Diary have ads?
Health Diary shows ads; Nitro Athletic Complex does not.
Which is updated more often, Nitro Athletic Complex or Health Diary?
Nitro Athletic Complex ships an update every 2 months, and Health Diary every 2 weeks. Most recently, Nitro Athletic Complex was updated on September 12, 2026 and Health Diary on September 26, 2026.

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