# REM vs Water Upgrade

The clearest difference is rating: REM at 5.0 against Water Upgrade's 2.0. REM also leads on ads (none vs shown) and monetization model (free vs ad-supported). Water Upgrade's advantage is update cadence (every 2 weeks vs every 6 weeks). On price, ratings volume, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

REM holds the better App Store score, 5.0 against 2.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

REM ships an update every 6 weeks, Water Upgrade every 2 weeks. The most recent releases landed on October 24, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | REM | Water Upgrade |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/rem-i/id1596490465/reviews)** | [2.0 (1 ratings)](https://appshunter.io/ios/app/water-upgrade/id6472040136/reviews) |
| Number of ratings | 1 | 1 |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 6 weeks | **Every 2 weeks** |
| Monetization | **Free** | Ad-supported |
| Size | 40 MB | 29 MB |
| Requires iOS | **12.4** | 14.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [The Automobile Association of South Africa](https://appshunter.io/developer/1055934946) | [Iveno Technology Co., Ltd](https://appshunter.io/developer/1637012055) |

## What reviewers say

### REM

[App page](https://appshunter.io/ios/app/rem-i/id1596490465)

This app connects to wearable devices that provide emergency security and medical services. It allows users to summon help at the press of a button, with real-time location tracking and fall detection capabilities. It's designed for personal safety in various situations.

**Highlights:** SOS panic button activation, Real-time GPS tracking, Geofencing alerts, Accident and fall detection, SMS notifications for emergencies, Integration with 180+ security providers

**In-app purchases:** none


### Water Upgrade

[App page](https://appshunter.io/ios/app/water-upgrade/id6472040136)

This app helps you build a daily water drinking habit through gamified challenges and progress tracking. It encourages consistency and celebrates achievements, turning hydration into a rewarding journey towards a healthier lifestyle.

**Highlights:** Daily water drinking task setting, Progress tracking and achievement system, Gamified challenges with rewards, Habit formation support, Record of daily water consumption, Failure and correction logging

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is REM free?

REM is free to download, with no in-app purchases.

### Is Water Upgrade free?

Water Upgrade is free to download, with no in-app purchases.

### Which has better reviews, REM or Water Upgrade?

REM is rated higher. REM averages 5.0 out of 5 from 1 ratings, while Water Upgrade averages 2.0 from 1 ratings.

### Do REM or Water Upgrade have ads?

Water Upgrade shows ads; REM does not.

### Which is updated more often, REM or Water Upgrade?

REM ships an update every 6 weeks, and Water Upgrade every 2 weeks. Most recently, REM was updated on October 24, 2026 and Water Upgrade on October 10, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*