# 420! vs Battery Grapher

The clearest difference is review sentiment: 420! at 100% against Battery Grapher's 61%. 420! also leads on update cadence (weekly vs every 2 months) and rating (4.6 vs 4.3). Battery Grapher's advantage is ratings volume (155 vs 10). On ads, in-app purchases, monetization model and device support there is nothing between them.

420! costs $0.99 and Battery Grapher $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

420! holds the better App Store score, 4.6 against 4.3. That said, the two scores are not equally well evidenced: Battery Grapher has 155 ratings behind it against 10, so its average is the more settled of the two. Written reviews point the same way: 100% of 420!'s written reviews are positive against 61% of Battery Grapher's.

420! ships an update weekly, Battery Grapher every 2 months. The most recent releases landed on November 2, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | 420! | Battery Grapher |
| --- | --- | --- |
| Price | **$0.99** | $1.99 |
| Rating | **[4.6 (10 ratings)](https://appshunter.io/ios/app/420/id1194325430/reviews)** | [4.3 (155 ratings)](https://appshunter.io/ios/app/battery-grapher/id1498632956/reviews) |
| Number of ratings | 10 | **155** |
| Positive reviews | **100.0% of reviews** | 61.2% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Weekly** | Every 2 months |
| Monetization | Free | Free |
| Size | 31 MB | 5 MB |
| Requires iOS | **10.0** | 15.0 |
| Devices | iPhone, iPad, iPod, Apple Watch | iPhone, iPad, iPod, Apple Watch |
| Age rating | 12+ | 4+ |
| Developer | [More Voltage](https://appshunter.io/developer/945878747) | [Joshua Bird](https://appshunter.io/developer/1549690243) |

## What reviewers say

### 420!

[App page](https://appshunter.io/ios/app/420/id1194325430)

This app provides a simple alarm to remind you to take breaks. It's designed to help you relax and de-stress throughout your day. Available on iOS devices and Apple Watch.

**Highlights:** Customizable break reminders, iOS and Apple Watch support, Simple and intuitive interface, Promotes relaxation and stress relief

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

**In-app purchases:** none


### 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)


## Frequently asked questions

### Is 420! free?

420! costs $0.99, with no in-app purchases.

### Is Battery Grapher free?

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

### Which has better reviews, 420! or Battery Grapher?

420! is rated higher. 420! averages 4.6 out of 5 from 10 ratings, while Battery Grapher averages 4.3 from 155 ratings.

### Do 420! or Battery Grapher have ads?

Neither 420! nor Battery Grapher shows ads.

### Which is updated more often, 420! or Battery Grapher?

420! ships an update weekly, and Battery Grapher every 2 months. Most recently, 420! was updated on November 2, 2026 and Battery Grapher on November 7, 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.*