# Serial vs Remote Battery Level for Watch

The clearest difference is price: Remote Battery Level for Watch at Free against Serial's $2.99. Remote Battery Level for Watch also leads on update cadence (every 2 months vs every 7 months) and iOS requirement (12.0 vs 15.6). Serial's advantage is in-app purchases (none vs 4) and ads (none vs shown). On device support there is nothing between them.

Remote Battery Level for Watch is free to download; Serial costs $2.99 up front. Remote Battery Level for Watch sells 4 in-app purchases, starting at $0.49 per 7 days. Serial asks for nothing beyond the download.

Serial ships an update every 7 months, Remote Battery Level for Watch every 2 months. The most recent releases landed on September 2, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Serial | Remote Battery Level for Watch |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | — | **[3.9 (312 ratings)](https://appshunter.io/ios/app/remote-battery-level-for-watch/id954912200/reviews)** |
| Number of ratings | — | **312** |
| Positive reviews | — | 33.7% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 7 months | **Every 2 months** |
| Monetization | — | Free with in-app purchases |
| Size | 5 MB | 16 MB |
| Requires iOS | 15.6 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPod, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Ralph Cos](https://appshunter.io/developer/573505028) | [Caramba App Development](https://appshunter.io/developer/349530108) |

## What reviewers say

### Serial

[App page](https://appshunter.io/ios/app/serial-sum-trainer/id577884595)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Remote Battery Level for Watch

[App page](https://appshunter.io/ios/app/remote-battery-level-for-watch/id954912200)

Monitor your iPhone's battery level and charging status directly from your Apple Watch. Receive alerts for full charge or critical battery levels. View your Watch's charge on your iPhone and check data connection status.

**Highlights:** Check iPhone battery on Apple Watch, iPhone charging alerts on Watch, View Watch battery on iPhone, Display battery on Watch Face, Check data connection status, Customizable alert limits

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Subscription | $0.49 | per 7 days |
| Monthly Subscription | $0.99 | per month |
| Yearly Subscription | $7.49 | per year |
| Remote Battery Upgrade | $5.99 | one-time |

**What reviewers like**

- 🚀 Awesome little app
- 👍 Works as expected
- 👍 Useful for checking battery remotely
- 🚀 Convenient complication on Apple Watch

**What reviewers complain about**

- 🐛 Notifications don't work
- 🐛 Inaccurate battery readings
- 🔋 High battery drain
- 💰 Subscription model
- 🔋 Disconnects from Apple Watch

**Reported bugs**

- Crashes on launch
- Complication doesn't update
- Subscription issues

**Requested features**

- More frequent battery updates
- Sound alerts for low battery
- Ability to view watch battery on iPhone


## Frequently asked questions

### Is Serial free?

Serial costs $2.99, with no in-app purchases.

### Is Remote Battery Level for Watch free?

Remote Battery Level for Watch is free to download, with in-app purchases available.

### Do Serial or Remote Battery Level for Watch have ads?

Remote Battery Level for Watch shows ads; Serial does not.

### Which is updated more often, Serial or Remote Battery Level for Watch?

Serial ships an update every 7 months, and Remote Battery Level for Watch every 2 months. Most recently, Serial was updated on September 2, 2026 and Remote Battery Level for Watch on October 12, 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.*