# phoneWatcher vs Battery Day

The clearest difference is price: phoneWatcher at Free against Battery Day's $2.99. phoneWatcher also leads on update cadence (every 2 weeks vs every 5 months) and review sentiment (50% vs 33%). On rating, ads, in-app purchases and device support there is nothing between them.

phoneWatcher is free to download; Battery Day costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 4.0 for phoneWatcher against 4.0 for Battery Day. Both are backed by a comparable volume of ratings — 4 and 1 respectively. Written reviews are what separate them: 50% of phoneWatcher's written reviews are positive against 33% of Battery Day's.

phoneWatcher ships an update every 2 weeks, Battery Day every 5 months. The most recent releases landed on June 1, 2026 and September 3, 2026 respectively.

## The numbers

| Metric | phoneWatcher | Battery Day |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | [4.0 (4 ratings)](https://appshunter.io/ios/app/phonewatcher/id1202489070/reviews) | [4.0 (1 ratings)](https://appshunter.io/ios/app/battery-day/id6444242509/reviews) |
| Number of ratings | **4** | 1 |
| Positive reviews | **50.0% of reviews** | 33.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 5 months |
| Monetization | **Free** | Paid |
| Size | 2 MB | 3 MB |
| Requires iOS | 16.0 | 16.0 |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Erwin Mazariegos](https://appshunter.io/developer/1202489069) | [Eliott Morgensztern](https://appshunter.io/developer/1478504124) |

## What reviewers say

### phoneWatcher

[App page](https://appshunter.io/ios/app/phonewatcher/id1202489070)

Receive timely alerts on your smartwatch when your phone's battery level drops below a customizable threshold. Ensure you're never caught off guard by a dead phone battery again.

**Highlights:** Watch notifications for low phone battery, Customizable notification threshold, Supports all Watch complications, Regular phone battery checks, Avoid dead phone surprises

**Features:** macOS Compatibility

**In-app purchases:** none


### Battery Day

[App page](https://appshunter.io/ios/app/battery-day/id6444242509)

This app provides an at-a-glance estimate of your device's battery discharge time. It offers various widgets, gauges, and charts to visualize battery level history and predict remaining usage. The app requires active widget usage to record battery consumption.

**Highlights:** Battery discharge time estimation, Variety of widgets, gauges, and charts, Battery level history visualization, Battery usage prediction, Color-coded battery usage indication, Requires active widget for data recording

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is phoneWatcher free?

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

### Is Battery Day free?

Battery Day costs $2.99, with no in-app purchases.

### Which has better reviews, phoneWatcher or Battery Day?

phoneWatcher and Battery Day are both rated 4.0 out of 5 on the App Store, from 4 and 1 ratings respectively.

### Do phoneWatcher or Battery Day have ads?

Neither phoneWatcher nor Battery Day shows ads.

### Which is updated more often, phoneWatcher or Battery Day?

phoneWatcher ships an update every 2 weeks, and Battery Day every 5 months. Most recently, phoneWatcher was updated on June 1, 2026 and Battery Day on September 3, 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.*