Empty Fasting vs Hydro Dots
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Empty Fasting
This app helps users focus on a single fasting period at a time, offering both overnight and daytime schedules. It provides customizable themes and icons, home screen widgets, and tracks fasting streaks and trends with encouraging messages.
- Single fast focus
- Home screen widgets
- Overnight and daytime schedules
- Customizable themes and icons
- Streak and trend statistics
- Encouragement during fasts
Read full descriptionHide full description
· Full-focus on one fast at a time · Home screen widgets & live activities · Overnight and daytime fasting schedules · Make it yours with 6 themes and 18 icons · Statistics for your streaks and trends · Encouragement throughout your fasts
Hydro Dots
Read full descriptionHide full description
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: Empty Fasting at none against Hydro Dots's 4. Empty Fasting also leads on ads (none vs shown) and iOS requirement (17.0 vs 26.0). Hydro Dots's advantage is update cadence (daily vs every 3 days). 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
Both are free to download. Hydro Dots sells 4 one-off in-app purchases. Empty Fasting asks for nothing beyond the download.
Empty Fasting ships an update every 3 days, Hydro Dots daily. The most recent releases landed on September 28, 2026 and September 25, 2026 respectively.
| Parameter | Empty Fasting | Hydro Dots |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (68 ratings) — better | — |
| Positive reviews | 83.3% of reviews | — |
| Number of ratings | 68 — better | — |
| Update frequency | Every 3 days | Daily — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 17.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 169 MB | 43 MB |
| Age rating | 17+ | 4+ |
| Developer | Light Nudge | Kengo Tate |
Bugs and requests
Empty Fasting
Reported bugs
1 issue- Fast reminders still sent even if the fasting session is currently active.
Requested features
12 requests- Custom fasting length (days/hours)
- More options for ADF
- Apple Health integration
- Ability to edit start time of a running timer
- Set multiple start fast reminders
Show 7 moreShow fewer
- Option to set app to allow fasting from specific things (alcohol, meat)
- Manual time input for fasting
- Apple Watch addition
- Watch widget
- Start fasts automatically
- Ability to start countdown from a previous time
- Ability to add a fast started yesterday
Hydro Dots
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Empty Fasting
No in-app purchases
Hydro Dots
- A drop$0.99
- A glass$2.99
- A bottle$5.99
Show 1 moreShow fewer
- Pro — Founding Member$5.99
Questions
Is Empty Fasting free?
Is Hydro Dots free?
Do Empty Fasting or Hydro Dots have ads?
Which is updated more often, Empty Fasting or Hydro Dots?
Other comparisons















