# BatteryPhone vs How Long Left

The clearest difference is in-app purchases: BatteryPhone at none against How Long Left's 4. BatteryPhone also leads on update cadence (every 2 months vs every 4 months) and ratings volume (156 vs 40). How Long Left's advantage is ads (none vs shown) and iOS requirement (12.0 vs 15.0). On price, rating, review sentiment and device support there is nothing between them.

Both are free to download. How Long Left sells 4 one-off in-app purchases. BatteryPhone asks for nothing beyond the download.

How Long Left holds the better App Store score, 3.8 against 3.6. Both are backed by a comparable volume of ratings — 156 and 40 respectively. Written reviews point the same way: 54% of BatteryPhone's written reviews are positive against 59% of How Long Left's.

BatteryPhone ships an update every 2 months, How Long Left every 4 months. Both last shipped on November 2, 2026.

## The numbers

| Metric | BatteryPhone | How Long Left |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.6 (156 ratings)](https://appshunter.io/ios/app/batteryphone/id1191334332/reviews) | **[3.8 (40 ratings)](https://appshunter.io/ios/app/how-long-left/id1450603293/reviews)** |
| Number of ratings | **156** | 40 |
| Positive reviews | 53.7% of reviews | **58.5% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 2 months** | Every 4 months |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 7 MB | 27 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | iPhone, iPod, Apple Watch | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Keietsu Yasuhara](https://appshunter.io/developer/378538320) | [Ryan Kontos](https://appshunter.io/developer/1388832965) |

## What reviewers say

### BatteryPhone

[App page](https://appshunter.io/ios/app/batteryphone/id1191334332)

Monitor your phone and watch battery levels directly from your wrist. Receive timely notifications for low or full charge status, and view historical battery data with convenient graph displays. Supports automatic updates via complications for seamless monitoring.

**Highlights:** Check phone and watch battery status, Receive low and full charge notifications, View battery level graphs, Complication support for automatic updates, Tap complication to manually update status

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

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to use
- 🚀 Convenient way to check battery levels
- 💡 Helpful complication options
- 🔋 Minimal battery drain

**What reviewers complain about**

- 🐛 Inconsistent updates
- 🐛 Inaccurate battery readings
- 🔋 High battery consumption
- 🐛 Compatibility issues with newer devices/OS

**Reported bugs**

- Complication not updating
- App crashing on launch
- Incorrect battery percentage displayed

**Requested features**

- Customizable update frequency
- Support for AirPods/Bluetooth device battery monitoring
- Notification when device is fully charged
- Ability to select which device's battery is displayed on complication


### How Long Left

[App page](https://appshunter.io/ios/app/how-long-left/id1450603293)

This app helps you visualize the time remaining for your calendar events. It offers a Today Widget, Siri integration, and an Apple Watch app for convenient access. Receive notifications for upcoming events and customize your watch face with countdown complications.

**Highlights:** Countdown calendar events, Today Widget integration, Siri integration, Apple Watch app, Time remaining notifications, Apple Watch complications

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| How Long Left Widget | $1.99 | one-time |
| Premium Watch Complication | $4.99 | one-time |
| Legacy Pro Lifetime | $39.99 | one-time |
| How Long Left Pro (Lifetime) | $49.99 | one-time |

**What reviewers like**

- 👍 Great for staying organized
- 👍 Useful for busy schedules
- 👍 Excellent for time management
- 👍 Helpful for tracking time left
- 👍 Good for school/work schedules

**What reviewers complain about**

- 🐛 Watch complication not working
- 🐛 Broken restore purchases
- 🐛 UI is unattractive
- 🐛 MacOS app won't open
- 🐛 Widget doesn't work

**Reported bugs**

- Watch complication/widget doesn't update correctly
- Current feed no longer displays current events
- Restore purchases button is broken
- Developer ignores emails
- MacOS app won't open

**Requested features**

- Update to iOS 26/27 widgets
- Update to Apple Watch smart widgets
- Add custom event for future dates
- Widget for upcoming events
- Restrict event display time


## Frequently asked questions

### Is BatteryPhone free?

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

### Is How Long Left free?

How Long Left is free to download, with in-app purchases available.

### Which has better reviews, BatteryPhone or How Long Left?

How Long Left is rated higher. BatteryPhone averages 3.6 out of 5 from 156 ratings, while How Long Left averages 3.8 from 40 ratings.

### Do BatteryPhone or How Long Left have ads?

BatteryPhone shows ads; How Long Left does not.

### Which is updated more often, BatteryPhone or How Long Left?

BatteryPhone ships an update every 2 months, and How Long Left every 4 months. Most recently, BatteryPhone was updated on November 2, 2026 and How Long Left on November 2, 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.*