# Battery Grapher vs NurseClock

The clearest difference is price: NurseClock at Free against Battery Grapher's $1.99. NurseClock also leads on rating (5.0 vs 4.3). Battery Grapher's advantage is in-app purchases (none vs 2) and ratings volume (155 vs 1). On update cadence and ads there is nothing between them.

NurseClock is free to download; Battery Grapher costs $1.99 up front. NurseClock sells 2 in-app purchases, starting at $2.99 per month. Battery Grapher asks for nothing beyond the download.

NurseClock holds the better App Store score, 5.0 against 4.3. That said, the two scores are not equally well evidenced: Battery Grapher has 155 ratings behind it against 1, so its average is the more settled of the two.

Battery Grapher ships an update every 2 months, NurseClock every 3 months. The most recent releases landed on October 29, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Battery Grapher | NurseClock |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | [4.3 (155 ratings)](https://appshunter.io/ios/app/battery-grapher/id1498632956/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/nurseclock/id6758857573/reviews)** |
| Number of ratings | **155** | 1 |
| Positive reviews | 61.2% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 3 months |
| Monetization | **Free** | Freemium |
| Size | 5 MB | 156 MB |
| Requires iOS | **15.0** | 26.0 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Joshua Bird](https://appshunter.io/developer/1549690243) | [Jose Montes De Oca Morfin](https://appshunter.io/developer/1875301848) |

## What reviewers say

### Battery Grapher

[App page](https://appshunter.io/ios/app/battery-grapher/id1498632956)

This app tracks your device's battery usage over time and uses your historical data to predict future battery levels. It's designed for low energy consumption and offers customizable notifications to help you manage charging times.

**Highlights:** Historical battery level graphing, Smart future battery predictions, Low energy consumption design, Customizable battery notifications, Supports all complications and widget sizes

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

**In-app purchases:** none

**What reviewers like**

- 💡 Innovative battery prediction feature
- ⌚ Accurate Apple Watch complication display
- 📊 Detailed battery usage analytics and graphs
- 🎯 Learns usage patterns over time for better accuracy
- 🔋 Shows hours remaining instead of just percentage

**What reviewers complain about**

- 🐛 Complication fails to update frequently
- ❌ Widget missing or not appearing on installation
- 🔴 Inaccurate battery predictions, especially on newer devices
- ⏰ Updates only once per hour, causing stale data
- 📉 Accuracy takes weeks to improve on Apple Watch

**Reported bugs**

- Widget not displaying on initial installation
- Complication shows stale data and doesn't refresh automatically
- Battery percentage stuck at incorrect values (e.g., 73%, 68%)
- Accuracy status fluctuates rapidly between good and bad
- Missing data warnings despite app being in dock

**Requested features**

- Watch complication for Smart Stack (watchOS 10+)
- Support for Apple Watch Ultra with correct 36-hour battery display
- Low power mode detection and separate prediction profiles
- Force refresh button in app
- More frequent update intervals (user-configurable)


### NurseClock

[App page](https://appshunter.io/ios/app/nurseclock/id6758857573)

This alarm app is tailored for nurses and shift workers with irregular schedules. It allows users to set alarms for specific work dates rather than just daily or weekly repeats, simplifying wake-up routines for rotating shifts.

**Highlights:** Set alarms for specific dates, Batch-create alarms for entire week, Monthly calendar view of alarms, Customizable sounds and snooze, Auto-delete old alarms, Import schedules from NurseGrid (Pro), Automatic calendar sync (Pro)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| NurseClock Pro Monthly | $2.99 | per month |
| NurseClock Pro Yearly | $29.99 | per year |


## Frequently asked questions

### Is Battery Grapher free?

Battery Grapher costs $1.99, with no in-app purchases.

### Is NurseClock free?

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

### Which has better reviews, Battery Grapher or NurseClock?

NurseClock is rated higher. Battery Grapher averages 4.3 out of 5 from 155 ratings, while NurseClock averages 5.0 from 1 ratings.

### Do Battery Grapher or NurseClock have ads?

Neither Battery Grapher nor NurseClock shows ads.

### Which is updated more often, Battery Grapher or NurseClock?

Battery Grapher ships an update every 2 months, and NurseClock every 3 months. Most recently, Battery Grapher was updated on October 29, 2026 and NurseClock on October 15, 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.*