# ContactFlow vs Battery Grapher

The clearest difference is update cadence: Battery Grapher at every 2 months against ContactFlow's every 18 months. Battery Grapher also leads on ratings volume (155 vs 2) and iOS requirement (15.0 vs 17.0). ContactFlow's advantage is price ($0.99 vs $1.99). On rating, review sentiment, ads and in-app purchases there is nothing between them.

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

ContactFlow holds the better App Store score, 4.5 against 4.3. That said, the two scores are not equally well evidenced: Battery Grapher has 155 ratings behind it against 2, so its average is the more settled of the two. Written reviews complicate that: 59% of ContactFlow's written reviews are positive against 61% of Battery Grapher's, so the app with the better star average is not the one people write more warmly about.

ContactFlow ships an update every 18 months, Battery Grapher every 2 months. The most recent releases landed on October 5, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | ContactFlow | Battery Grapher |
| --- | --- | --- |
| Price | **$0.99** | $1.99 |
| Rating | **[4.5 (2 ratings)](https://appshunter.io/ios/app/contactflow/id931378221/reviews)** | [4.3 (155 ratings)](https://appshunter.io/ios/app/battery-grapher/id1498632956/reviews) |
| Number of ratings | 2 | **155** |
| Positive reviews | 58.8% of reviews | **61.2% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 18 months | **Every 2 months** |
| Monetization | Paid | **Free** |
| Size | 5 MB | 5 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad, Apple Watch | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Fabien FOULON](https://appshunter.io/developer/296570792) | [Joshua Bird](https://appshunter.io/developer/1549690243) |

## What reviewers say

### ContactFlow

[App page](https://appshunter.io/ios/app/contactflow/id931378221)

This utility app offers a new way to view and manage your contacts. It provides a photo wall, map view, and birthday notifications to help you rediscover your connections. Available on iPhone, iPad, and Apple Watch.

**Highlights:** Apple Watch App, Photo Wall View, Contacts Map, Birthday Notifications, Birthdays Widget, Universal Application

**Features:** macOS Compatibility

**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 ContactFlow free?

ContactFlow 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, ContactFlow or Battery Grapher?

ContactFlow is rated higher. ContactFlow averages 4.5 out of 5 from 2 ratings, while Battery Grapher averages 4.3 from 155 ratings.

### Do ContactFlow or Battery Grapher have ads?

Neither ContactFlow nor Battery Grapher shows ads.

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

ContactFlow ships an update every 18 months, and Battery Grapher every 2 months. Most recently, ContactFlow was updated on October 5, 2026 and Battery Grapher on October 22, 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.*