myLTFU vs Hydrate or Diedrate
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
myLTFU
This app allows participants in a research study to securely complete follow-up surveys and connect with the research team. It facilitates the sharing of health information to improve the long-term care of childhood cancer survivors. Participation is by invitation only.
- Complete health and treatment surveys
- Share electronic health records
- Receive study updates and resources
- Connect with the research team
- Secure data storage
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Welcome to the myLTFU portal app! You can use this app to securely complete your follow-up surveys in the LTFU Study and stay connected to the research team. The Long-Term Follow-Up (LTFU) Study is a research program that aims to improve the long-term health and quality of life of childhood cancer survivors. By participating in the LTFU Study, you are helping researchers better understand how cancer and its treatment affect people years later—so that future survivors can live longer, healthier lives. Participation is by invitation only. With this app, you’ll be able to: - Complete surveys about your health, treatment history, and life after cancer - Share your electronic health records (EHR), including information about doctor visits, medications, and test results - Receive study updates, helpful resources, and opportunities to participate in future research - You will also have the opportunity to share your electronic health records (with optional selections for Apple's HealthKit and Clinical Health Records) All data collected is stored securely to protect your privacy. For more information about the LTFU Study, visit our website or contact our team at 1-800-775-2167.
Hydrate or Diedrate
This app offers a no-nonsense approach to tracking daily water intake with a dark sense of humor and vintage medical illustrations. It provides timely reminders and a status system to encourage proper hydration.
- Daily water goal tracking
- Fast-log servings
- Status system from Desiccating to Properly Hydrated
- Serious hydration reminders
- Streak tracking
- Daily history log
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Most hydration apps encourage you with a cute cup emoji. This one tells you the truth: you're desiccating. There's a record. It's not flattering. Fix it. Hydrate or Diedrate is a water tracker with a dark sense of humor, a stark editorial aesthetic, and notifications that read like official dehydration notices. Built for people who find wellness apps insufferably cute. Track your daily water intake. Log fast, from the app, a widget or your wrist. Watch your status climb from Desiccating to Properly Hydrated. Receive reminders with appropriate gravity. THE RECORD – Daily goal in oz or mL – Status system: Desiccating → Preserved – Streaks, Trials, Commendations and a full daily archive – Apple Health sync – Custom reset time, so the record follows your schedule instead of midnight – Light, dark, or as your device has it NOTICES – Up to four daily reminders, at the times you choose – Copy that adjusts to the time of day and how far behind you are – Once the goal is met, the rest of the day's reminders stand down – Over 90 hand-written notices. The skull does not repeat itself. – Delivered silently. The skull does not require fanfare. APPLE WATCH – Today's record on your wrist – One tap logs a drink. The phone is informed. WIDGETS – The Specimen, free: the skull fills with water, in your app icon's colours VESSELS (requires Preserved) – Join or start a private group of up to six – A weekly anonymous tally of who remains preserved – No names. No rankings. No feed. PRESERVED — LIFETIME ACCESS One-time purchase. No subscription. The Ledger, The Vessel and The Record widgets · Apple Watch complications · Vessels · Custom quick-log amounts · Full history and weekly insights · The full notice archive · Alternate app icons ACCESSIBILITY Full VoiceOver support. Every control named. Every day on the calendar states its own condition rather than relying on colour. Reduce Motion respected. Contrast and Dynamic Type supported throughout. Private by default. Your record stays on your device. Not medical advice. The skull is not a physician; if a condition affects how much you should drink, ask one. The vessel requires water. You already knew that.
Screenshots
Verdict
The clearest difference is in-app purchases: myLTFU at none against Hydrate or Diedrate's 1. Hydrate or Diedrate's advantage is update cadence (every 3 days vs every 5 weeks) and ratings volume (10 vs 1). On price, rating, ads 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. Hydrate or Diedrate sells 1 one-off in-app purchase. myLTFU asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 5.0 for myLTFU against 4.9 for Hydrate or Diedrate. That said, the two scores are not equally well evidenced: Hydrate or Diedrate has 10 ratings behind it against 1, so its average is the more settled of the two.
myLTFU ships an update every 5 weeks, Hydrate or Diedrate every 3 days. The most recent releases landed on November 4, 2026 and October 31, 2026 respectively.
| Parameter | myLTFU | Hydrate or Diedrate |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | 4.9 (10 ratings) |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 1 | 10 — better |
| Update frequency | Every 5 weeks | Every 3 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPod | iPhone, Apple Watch |
| Requires iOS | 15.5 — better | 16.4 |
| Further details — not scored | ||
| Size | 107 MB | 50 MB |
| Age rating | 4+ | 4+ |
| Developer | Vibrent Health, Inc. | Raymond Rothwell |
Customer experience
myLTFU
Hydrate or Diedrate
In-app purchases
myLTFU
No in-app purchases
Hydrate or Diedrate
- Hydrate or Diedrate$6.99









