Comparison

Hydra vs Noema

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

Head to head
About

Hydra

Features
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Hydra – Water Tracker is a free iPhone app for tracking your water intake, with drink reminders that pause once you reach your goal. It's the calm, honest water tracker, made by an independent developer. Log a glass in one tap — in the app, from a widget, from Control Center, from a reminder or with Siri — and see at a glance whether you're on pace for today. WHY HYDRA • One-tap logging: +250 ml / +500 ml, or any of 12 drinks • Home Screen and Lock Screen widgets with buttons to log instantly • Control Center and Action button control • Log straight from a reminder without opening the app • Reminders only during your active hours — and they stop once you reach your goal • Personal daily goal from weight, activity and climate, or set your own • Pace-aware status: Hydra compares your intake with the time of day • Edit or delete any entry • Apple Health: every drink is saved as water • Siri in 24 languages: "Log water in Hydra", "How much have I drunk in Hydra" • Transparent science: hydration factors based on the Beverage Hydration Index, with sources in the app • ml or oz; text scales with your iPhone's text size FREE, FOR REAL Logging, all drinks, reminders, widgets, 7-day history and Apple Health are free. PREMIUM • Smart reminders that count from your last drink • 30- and 90-day history with insights (peak time, drink mix, alcohol) • Linen and Slate themes PRIVACY No account. No ads. No tracking. Your data stays on your iPhone. Hydra is a wellness tool, not medical advice. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Noema

Features
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Noema помогает разобраться в медицинских анализах без сложных терминов и бесконечных поисков в интернете. Загрузите фото или PDF с результатами исследований — приложение автоматически распознает показатели и покажет понятный отчет с объяснением значений и отклонений. Noema помогает лучше понимать данные ваших исследований и следить за изменениями здоровья в динамике. ВОЗМОЖНОСТИ NOEMA • Расшифровка анализов Загружайте результаты анализов крови, мочи, биохимии, гормонов и других исследований. • Простые объяснения Понятное описание показателей: ферритин, гемоглобин, ТТГ, АЛТ, АСТ, витамин D, холестерин и другие параметры. • Отслеживание динамики Следите за изменениями показателей с помощью удобных графиков и истории результатов. • Хранение результатов Все анализы сохраняются в одном месте и доступны в любое время. • Персональный подход Интерпретация учитывает возраст, пол и другие данные профиля. • Быстрая загрузка Поддержка фотографий и PDF-файлов. КОМУ ПОДОЙДЕТ NOEMA • Тем, кто хочет лучше понимать свои анализы • Тем, кто следит за хроническими показателями • Тем, кто проходит лечение или меняет образ жизни • Тем, кто регулярно сдает анализы ВАЖНО Noema не ставит диагнозы и не заменяет консультацию врача. Приложение предназначено только для информационных целей. Перед принятием медицинских решений обязательно консультируйтесь со специалистом.

Screenshots

Hydra4 screens
Noema4 screens

Verdict

The call

The clearest difference is in-app purchases: Noema at none against Hydra's 4. Hydra's advantage is update cadence (every 4 days vs every 2 weeks). On price, ads, device support and iOS requirement 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. Hydra sells 4 in-app purchases, starting at $2.99 per 7 days. Noema asks for nothing beyond the download.

UpkeepUpdate frequency

Hydra ships an update every 4 days, Noema every 2 weeks. The most recent releases landed on October 24, 2026 and October 16, 2026 respectively.

Scorecard2 real differences · 4 level
Hydra versus Noema: the parameters behind the verdict, then further details
ParameterHydraNoema
PriceFreeFree
Update frequencyEvery 4 days — betterEvery 2 weeks
AdsNoNo
In-app purchasesYesNo — better
DevicesiPhoneiPhone, iPad — better
Requires iOS18.0 — better18.5
Further details — not scored
Size10 MB14 MB
Age rating4+17+
DeveloperFilippos KagkiouzlsGrosskopf Maksim Andreevich, IP

In-app purchases

4 purchases

Hydra

Subscriptions3
  • Premium Weekly$2.997 Days
  • Premium Monthly$4.991 Month
  • Premium Annual7 Days trial$29.991 Year
One-time1
  • Premium Lifetime$49.99
None

Noema

No in-app purchases

Questions

Is Hydra free?
Hydra is free to download, with in-app purchases available.
Is Noema free?
Noema is free to download, with no in-app purchases.
Do Hydra or Noema have ads?
Neither Hydra nor Noema shows ads.
Which is updated more often, Hydra or Noema?
Hydra ships an update every 4 days, and Noema every 2 weeks. Most recently, Hydra was updated on October 24, 2026 and Noema on October 16, 2026.

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