HydroLoop vs VOLT
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
HydroLoop
This app gamifies hydration by letting you watch a 3D bottle fill with each sip. It offers personalized daily goals, tracks various beverages, and uses streaks to motivate users. Syncs with Apple Health and provides widgets for easy access.
- Living 3D bottle visualization
- Personalized daily hydration goals
- Streak tracking and rewards
- Logging of various beverage types
- Apple Health integration
- Home/Lock Screen widgets
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HydroLoop makes drinking water something you actually look forward to. Watch a living 3D bottle fill with every sip, build streaks you won't want to break, and hit a daily goal that's tuned to your body. A bottle that comes alive Pour with a tap or a hold and feel it land. Your hydration fills a real-time 3D bottle you can make your own with finishes and collectible skins. A goal made for you Answer a few quick questions and HydroLoop sets a personalized daily target based on your body and how active you are. More than water Log coffee, tea, juice, and more - HydroLoop understands how each drink counts toward real hydration, and your Coach helps you rebalance. Streaks that keep you going A streak flame that grows as you do, celebrations when you hit your goal, and a streak freeze so one off day doesn't undo your progress. Stays in sync Sign in with Apple to back up your history and restore it across devices and reinstalls - or use HydroLoop without an account. Works with Apple Health and Home/Lock Screen widgets. HydroLoop+ Unlock every drink, bottle, finish, and your Hydration Coach with a subscription ($1.99/month, 7-day free trial) or a one-time lifetime unlock ($19.99). Calm, encouraging, and private. Your hydration, beautifully. --- Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://hyrdroloopsupport-dot.github.io/hydroloop-site/privacy.html
VOLT
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VOLT is a beautiful strength-training tracker with one big idea: your body is the map. Tap a muscle on an interactive body map to see the exercises that train it, log your sets, and watch that muscle light up. No clutter, no account, no cloud — everything lives on your iPhone. TRAIN BY MUSCLE Tap any muscle on the front or back body map to jump straight to the right exercises. Recently trained muscles glow, so you always know what's fresh and what's neglected. EVERY EXERCISE, IN MOTION 100+ exercises, each with a clean animated demonstration so you know exactly how the movement should look before your first rep. LOG SETS THE HONEST WAY Start a workout, then tick off each set as you finish it. A rest timer, previous-set memory, supersets and a built-in plate calculator keep you moving instead of fiddling with your phone. PROGRESS YOU CAN FEEL Streaks, weekly volume charts, personal records and body-measurement tracking. An on-device coach spots plateaus and suggests what to train next — all computed on your phone. BUILD YOUR OWN ROUTINES Save reusable workouts — a set of exercises with your target sets and reps — then start one with a single tap on any day. Or clone a starter template (Push, Pull, Legs, Full Body). SHARE YOUR JOURNEY Turn a day, week, month or year of training into a gorgeous card built for Instagram and WhatsApp. Every share is proof of the work. PRIVATE BY DEFAULT VOLT has no servers and no account. Your workouts, measurements and records are stored only on your device and never sent anywhere. No analytics, no ads, no tracking. If you ever delete the app, your data goes with it — because there was never a copy anywhere else. VOLT is free. Download it, tap a muscle, and start training. Not medical advice. Consult a qualified professional before starting any exercise program and stop if you feel pain.
Screenshots
Verdict
The clearest difference is in-app purchases: VOLT at none against HydroLoop's 2. VOLT also leads on update cadence (daily vs monthly) and iOS requirement (13.0 vs 17.0). On price, 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. HydroLoop sells 2 in-app purchases, starting at $1.99 per month. VOLT asks for nothing beyond the download.
HydroLoop ships an update monthly, VOLT daily. The most recent releases landed on October 6, 2026 and October 14, 2026 respectively.
| Parameter | HydroLoop | VOLT |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Monthly | Daily — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Freemium | — |
| Devices | iPhone | iPhone, iPod — better |
| Requires iOS | 17.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 5 MB | 27 MB |
| Age rating | 12+ | 4+ |
| Developer | MALCOLM VINCENT GERARD | Narender Vaddepelly |
In-app purchases
HydroLoop
- HydroLoop+ Monthly7 Days trial$1.991 Month
- HydroLoop+ Lifetime$19.99
VOLT
No in-app purchases









