# Battery Grapher vs Blastoff

The clearest difference is price: Blastoff at Free against Battery Grapher's $1.99. Blastoff also leads on update cadence (daily vs every 2 months). Battery Grapher's advantage is in-app purchases (none vs 1) and ads (none vs shown).

Blastoff is free to download; Battery Grapher costs $1.99 up front. Blastoff sells 1 one-off in-app purchase. Battery Grapher asks for nothing beyond the download.

Battery Grapher ships an update every 2 months, Blastoff daily. The most recent releases landed on October 27, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | Battery Grapher | Blastoff |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[4.3 (155 ratings)](https://appshunter.io/ios/app/battery-grapher/id1498632956/reviews)** | — |
| Number of ratings | **155** | — |
| Positive reviews | 61.2% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Daily** |
| Monetization | Free | — |
| Size | 5 MB | 10 MB |
| Requires iOS | **15.0** | 26.4 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Joshua Bird](https://appshunter.io/developer/1549690243) | [Christian Archilla](https://appshunter.io/developer/6776480125) |

## 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)


### Blastoff

[App page](https://appshunter.io/ios/app/blastoff-group-messaging/id6776480123)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Blastoff Premium | $0.99 | one-time |


## Frequently asked questions

### Is Battery Grapher free?

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

### Is Blastoff free?

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

### Do Battery Grapher or Blastoff have ads?

Blastoff shows ads; Battery Grapher does not.

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

Battery Grapher ships an update every 2 months, and Blastoff daily. Most recently, Battery Grapher was updated on October 27, 2026 and Blastoff on October 20, 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.*