# PhoneBattery vs B³ Calculator

The clearest difference is price: PhoneBattery at Free against B³ Calculator's $0.99. B³ Calculator's advantage is in-app purchases (none vs 4) and iOS requirement (16.0 vs 18.0). On ads and device support there is nothing between them.

PhoneBattery is free to download; B³ Calculator costs $0.99 up front. PhoneBattery sells 4 one-off in-app purchases. B³ Calculator asks for nothing beyond the download.

## The numbers

| Metric | PhoneBattery | B³ Calculator |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[4.3 (381 ratings)](https://appshunter.io/ios/app/phonebattery/id1009278300/reviews)** | — |
| Number of ratings | **381** | — |
| Positive reviews | 58.4% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 8 days | — |
| Monetization | Free with in-app purchases | — |
| Size | 19 MB | 2 MB |
| Requires iOS | 18.0 | **16.0** |
| Devices | iPhone, Apple Watch | iPhone, Apple Watch |
| Age rating | 4+ | 17+ |
| Developer | [Marcel Voss](https://appshunter.io/developer/707185887) | [玉美 张](https://appshunter.io/developer/1550410737) |

## What reviewers say

### PhoneBattery

[App page](https://appshunter.io/ios/app/phonebattery/id1009278300)

This app displays your iPhone's battery level directly on your Apple Watch. Avoid constantly checking your phone with quick glances at your wrist, perfect for workouts, commutes, or when your phone is just out of reach.

**Highlights:** iPhone battery level on Apple Watch, Smart battery notifications, Apple Watch complications, Alternative app icons, Clean and simple interface

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Small tip | $0.99 | one-time |
| Medium tip | $1.99 | one-time |
| Large tip | $3.99 | one-time |
| Generous tip | $4.99 | one-time |

**What reviewers like**

- 👍 Simple and intuitive user interface
- ⚡ Quick access to iPhone battery status from Apple Watch
- 🎯 Does exactly what it advertises
- 💰 Free app with no in-app purchases
- 🎨 Pleasant and elegant design

**What reviewers complain about**

- 🐛 App frequently stops working or becomes non-functional
- 🐛 Complication feature doesn't load data properly
- 🐛 Battery percentage displays incorrectly or shows blank screens
- ⚠️ Lacks compatibility with newer iOS and watchOS versions
- ⚠️ Poor customer support and slow response times

**Reported bugs**

- Complication shows skeleton loading screen but never loads data
- App displays blank battery icon with no charge information
- Battery percentage shows incorrect values
- App only works if opened on phone first
- Incompatible with watchOS 7 and iOS 14+

**Requested features**

- Add working complication for watch face integration
- Support for circular battery indicator display
- Sound notifications for low battery alerts
- Display phone signal strength information
- Show Bluetooth headphone battery percentage


### B³ Calculator

[App page](https://appshunter.io/ios/app/b-calculator/id6450912372)

**In-app purchases:** none


## Frequently asked questions

### Is PhoneBattery free?

PhoneBattery is free to download, with in-app purchases available.

### Is B³ Calculator free?

B³ Calculator costs $0.99, with no in-app purchases.

### Do PhoneBattery or B³ Calculator have ads?

Neither PhoneBattery nor B³ Calculator shows ads.

---

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