Comparison

H2O vs Follow Through EF

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

Head to head
About

H2O

This application helps you monitor your daily water consumption to ensure you stay adequately hydrated. It offers a visually appealing interface with features for quickly logging intake and reviewing your progress.

Highlights
  • Log water intake quickly
  • Preset water amounts
  • Weekly intake graph
  • Full history of entries
  • HealthKit integration
  • Intuitive interface
Features
Read full description

Most water apps give you the same goal every day. H2O raises yours on hot days and after workouts, so you drink what your body actually needs. Log a glass in one tap from your iPhone, Apple Watch or Home Screen, and watch your streak grow on the calendar. H2O makes staying hydrated the easiest habit you'll build. H2O has helped people stay hydrated since 2016, and version 2.0 is rebuilt from the ground up. FEATURES ◉ Daily goals that adapt to the local weather and your workouts in Apple Health. ◉ Quickly add entries with preset water amounts, or enter a custom amount. ◉ An Apple Watch app with complications for your watch face. ◉ Home Screen widgets that log water with one tap. ◉ Gentle reminders to drink throughout the day. ◉ A calendar that shows every day you hit your goal. ◉ Charts of your weekly and monthly water intake. ◉ A full history of water entries. ◉ Apple Health integration and iCloud sync across your devices. ◉ Export your water history as a PDF. ◉ Track in ounces or milliliters. ◉ Support for VoiceOver, Voice Control, Larger Text and Reduced Motion. ◉ A beautiful and intuitive interface! H2O PRO H2O requires H2O Pro, available as a monthly or yearly auto-renewing subscription, or as a one-time lifetime purchase. The yearly plan includes a 7-day free trial for eligible new subscribers. If you used H2O before version 2.0, the app stays free for you, and H2O Pro adds adaptive goals and PDF export. Payment is charged to your Apple Account. Subscriptions renew automatically unless cancelled 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/ H2O Terms: https://lunarbits.io/terms.html Privacy Policy: https://lunarbits.io/privacy.html

About

Follow Through EF

This app helps adults with executive functioning challenges, including NVLD and ADHD, track their progress over 13-week sprints. It monitors core actions, biological standards like sleep and nutrition, and engagement with accountability partners to provide a weekly performance score.

Highlights
  • 13-week performance sprints
  • Track core actions and personal targets
  • Monitor biological standards (sleep, nutrition, movement)
  • Track engagement with accountability partners
  • Weekly Green, Yellow, Red performance scores
  • Designed for NVLD, ADHD, and executive functioning challenges
Features
Read full description

Follow Through EF is the first performance tracking app built specifically for adults with Nonverbal Learning Disability (NVLD/DVSD) and designed to benefit anyone with executive functioning challenges including ADHD, AuDHD, autism, and many others. If you know what you need to do but cannot make yourself do it consistently — this app was built for you. What Makes Follow Through EF Different Most habit trackers and productivity apps were built for neurotypical brains. Follow Through EF was designed by a licensed professional counselor with years of clinical experience working with people with NVLD (DVSD), ADHD, and many other groups navigating executive functioning challenges. Every feature exists because everything impacts executive functioning — your sleep, your environment, your body, your habits, and your sense of follow-through all matter and all belong in the same place. What the App Does Follow Through EF runs on a 13-week sprint system — a structured quarter with a real beginning, a defined finish line, and a weekly score that tells you exactly how you are doing. No vague streaks. No endless to-do lists. A real system with a real endpoint. Each week you track three things: Core Actions — the specific things you committed to doing this week, scored against your own personal targets. You set the bar. You track your follow-through. Biological Standards — sleep, wake time, movement, nutrition, hygiene, and your environment. Your brain cannot do executive functioning work without your body. This app tracks both. Engagement — whether you connected with your accountability person or group and submitted on time. Connection and consistency matter. Your weekly score is calculated from all three sections and rated Green, Yellow, or Red. Not as a judgment. As information. Who This App Is For Follow Through EF is designed for adults with Nonverbal Learning Disability (NVLD / Developmental Visual-Spatial Disorder / DVSD), ADHD, AuDHD, autism, and related executive functioning challenges. It is also beneficial for anyone who struggles with task initiation, follow-through, consistency, time management, habit building, goal tracking, and daily planning. Disclaimer Follow Through EF is a performance tracking and self-management tool. It is not a medical device, clinical intervention, mental health treatment, or substitute for therapy or psychiatric care. Use of this app does not establish a therapeutic relationship of any kind.

Screenshots

H2O4 screens
Follow Through EF4 screens

Verdict

The call

The clearest difference is in-app purchases: Follow Through EF at none against H2O's 6. Follow Through EF also leads on rating (5.0 vs 4.5) and review sentiment (100% vs 85%). H2O's advantage is update cadence (every 3 days vs every 3 weeks) and ratings volume (175 vs 2). On price, ads, monetization model 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. H2O sells 4 in-app purchases, starting at $1.99 per month. Follow Through EF asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Follow Through EF holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: H2O has 175 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 85% of H2O's written reviews are positive against 100% of Follow Through EF's.

UpkeepUpdate frequency

H2O ships an update every 3 days, Follow Through EF every 3 weeks. The most recent releases landed on November 1, 2026 and October 26, 2026 respectively.

Scorecard6 real differences · 4 level
H2O versus Follow Through EF: the parameters behind the verdict, then further details
ParameterH2OFollow Through EF
PriceFreeFree
Rating4.5 (175 ratings)5.0 (2 ratings) — better
Positive reviews84.9% of reviews100.0% of reviews — better
Number of ratings175 — better2
Update frequencyEvery 3 days — betterEvery 3 weeks
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreeFree
DevicesiPhone, Apple WatchiPhone, iPad
Requires iOS26.016.4 — better
Further details — not scored
Size48 MB45 MB
Age rating12+4+
DeveloperLunarbits LLCChristina Cummins

Customer experience

H2O

All ratings129 ratings
Positive86.8%
Neutral3.9%
Negative9.3%
Written reviews53 reviews
Positive84.9%
Neutral1.9%
Negative13.2%

Follow Through EF

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

H2O

Reported bugs

5 issues
  • App crashes when accessing settings
  • App shuts off when accessing settings
  • Graph feature not working
  • App closes when goal is reached
  • Glitches when reaching goal

Requested features

20 requests
  • Add reminder notifications
  • Allow editing of previous day's entries
  • Add metric units (ml/L)
  • Add widget support
  • Add export to HealthKit option
Show 15 more
  • Add ability to flip to a second profile
  • Add Apple Watch integration
  • Add dark mode
  • Add support for other beverages (coffee, tea)
  • Add Shortcuts support
  • Fix app closing when goal is reached
  • Fix glitches when reaching goal
  • Clarify how to delete entries
  • Add total fluid intake of previous days by each day in history
  • Allow changing the date/time of an entry
  • Allow the app to read HealthKit data
  • Automatically update daily goal with age, weight, and gender
  • Refine daily goal with location and activity data
  • Add a way to donate to the developer
  • Screen adjustment sizes for newer iPhones

Follow Through EF

Not enough reviews yet to summarise bugs or requests.

In-app purchases

4 purchases

H2O

Subscriptions3
  • H2O Pro Monthly2 variants$1.991 Month
  • H2O Pro Yearly7 Days trial$9.991 Year
  • H2O Pro Yearly$9.991 Year
One-time1
  • H2O Pro Lifetime2 variants$19.99
None

Follow Through EF

No in-app purchases

Questions

Is H2O free?
H2O is free to download, with in-app purchases available.
Is Follow Through EF free?
Follow Through EF is free to download, with no in-app purchases.
Which has better reviews, H2O or Follow Through EF?
Follow Through EF is rated higher. H2O averages 4.5 out of 5 from 175 ratings, while Follow Through EF averages 5.0 from 2 ratings.
Do H2O or Follow Through EF have ads?
Neither H2O nor Follow Through EF shows ads.
Which is updated more often, H2O or Follow Through EF?
H2O ships an update every 3 days, and Follow Through EF every 3 weeks. Most recently, H2O was updated on November 1, 2026 and Follow Through EF on October 26, 2026.

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