Just BP vs Hydro Dots
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Just BP
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Just BP is a blood pressure app with no extra input fields and no ads — so you can focus entirely on recording and reviewing your trends on a clear graph. ■ Why Just BP? ・Purely BP: No tracking of weight, calories, or mood. Open the app, enter your numbers, and you're done — in seconds. ・No Ads, No Tracking: There are no ads interrupting your experience. We do not collect any usage statistics or personal data. ・Your Data is Yours Alone: Your records are stored only on your iPhone, not in the cloud. It's a private and secure space that no one else can access. ・100% Offline: No account, no login, and no internet required. It works whenever and wherever you are. No clutter, no distractions — just a simple way to stay on top of your blood pressure every day.
Hydro Dots
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Hydro Dots is a water tracker that draws your day as a rising water level, one dot at a time. Tap once to log a cup, a mug, or a bottle. The water climbs. That is the whole idea. WHAT IT DOES • One tap to log — your usual sizes sit on the first screen. Custom amounts and drink types are one tap further. • Not every drink counts the same — coffee, tea, juice and the rest are converted by their hydration index, so what you log is what your body keeps. • A goal that follows your day — body weight, temperature, humidity, UV and activity shape the target. It settles once, the first time you open the app each day, so it never moves under you. • Reminders that know where you stand — each one carries how much you have had and the pace that would get you there. • History and recap — a week of bars, a month of dots, a streak counter, and the month's total turned into things you can picture: bottles, kettles, sugar you avoided. • Widgets — log from the home screen or the lock screen without opening the app. A month of dots fits on the large one. • Shortcuts and Siri — log a drink or ask what you have had today, hands free. Every action is available to build your own routines. • Apple Health — records can be written to Health, and removing a record takes it back out. PRO A one-time purchase. No subscription. • No ads • Every theme — seven palettes, from cream LCD to OLED black • iCloud sync — records and drinks across your devices PRIVACY What you drink stays on your device. Your records are not sent anywhere unless you turn on iCloud sync, and then they go to your own iCloud, not to us.
Screenshots
Verdict
The clearest difference is in-app purchases: Just BP at none against Hydro Dots's 4. Just BP also leads on ads (none vs shown). Hydro Dots's advantage is update cadence (daily vs every 10 days). On price, 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
Both are free to download. Hydro Dots sells 4 one-off in-app purchases. Just BP asks for nothing beyond the download.
Just BP ships an update every 10 days, Hydro Dots daily. The most recent releases landed on November 9, 2026 and November 13, 2026 respectively.
| Parameter | Just BP | Hydro Dots |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 10 days | Daily — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 26.0 | 26.0 |
| Further details — not scored | ||
| Size | 5 MB | 43 MB |
| Age rating | 12+ | 4+ |
| Developer | Tomohiko Yada | Kengo Tate |
In-app purchases
Just BP
No in-app purchases
Hydro Dots
- A drop$0.99
- A glass$2.99
- A bottle$5.99
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- Pro — Founding Member$5.99









