# System Activity Monitors vs DataMeter

The clearest difference is rating: System Activity Monitors at 4.2 against DataMeter's 3.7. System Activity Monitors also leads on ads (none vs shown) and review sentiment (76% vs 47%). DataMeter's advantage is update cadence (monthly vs every 3 months) and iOS requirement (9.0 vs 13.0). On price, in-app purchases, monetization model and device support there is nothing between them.

Both are free to download. System Activity Monitors sells 4 in-app purchases, starting at $3.99 per 7 days and DataMeter sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

System Activity Monitors holds the better App Store score, 4.2 against 3.7. That said, the two scores are not equally well evidenced: System Activity Monitors has 774 ratings behind it against 36, so its average is the more settled of the two. Written reviews point the same way: 76% of System Activity Monitors's written reviews are positive against 47% of DataMeter's.

System Activity Monitors ships an update every 3 months, DataMeter monthly. The most recent releases landed on September 7, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | System Activity Monitors | DataMeter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (774 ratings)](https://appshunter.io/ios/app/system-activity-monitors/id386118145/reviews)** | [3.7 (36 ratings)](https://appshunter.io/ios/app/datameter-track-data-widget/id1129721067/reviews) |
| Number of ratings | **774** | 36 |
| Positive reviews | **76.0% of reviews** | 46.8% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | **Monthly** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 28 MB | 6 MB |
| Requires iOS | 13.0 | **9.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Tekton Technologies (P) Ltd.](https://appshunter.io/developer/343534621) | [泽辉 王](https://appshunter.io/developer/892030257) |

## What reviewers say

### System Activity Monitors

[App page](https://appshunter.io/ios/app/system-activity-monitors/id386118145)

Monitor your device's health with this comprehensive tool. Track memory, battery performance, storage, and network details. Get detailed camera information and helpful battery-saving tips to optimize your iPhone.

**Highlights:** Memory usage tracking, Battery performance monitoring, Device IP and hardware address, Battery saving tips, Used and free space indicator, Detailed camera information, System and hardware specs

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Sysmon Pro | $3.99 | per 7 days |
| Sysmon Pro | $6.99 | per month |
| Sysmon Pro | $29.99 | per year |
| Real Time Graphs | $2.99 | one-time |

**What reviewers like**

- 💯 Excellent app
- 🎆 Great app
- 🔒 Respects privacy
- 🔋 Helpful battery tips
- 👍 Simple and straightforward

**What reviewers complain about**

- 🐛 Buggy updates
- 💰 Subscription-based model
- 🔒 Privacy concerns due to required login
- 🔍 Limited functionality for free version
- 🔍 Inaccurate device information

**Reported bugs**

- Crashes on certain devices
- Login/registration issues
- Incorrect memory/CPU usage reporting

**Requested features**

- Ability to close/manage running apps
- More detailed app-level usage breakdown
- Dark mode option
- Widgets for quick access
- Ability to reclaim memory/free up storage


### DataMeter

[App page](https://appshunter.io/ios/app/datameter-track-data-widget/id1129721067)

Monitor your mobile cellular and WiFi data usage in real-time with a lightweight widget. View usage directly on your lock screen or notification center, and quickly toggle cellular data on/off. Get precise, up-to-the-minute data tracking to help save money and manage your data consumption effectively.

**Highlights:** Real-time data usage monitoring, Lock screen and notification center widget, Quick toggle for cellular data, Monthly data usage summary charts, Accurate, up-to-the-minute data tracking, Automatic unit adaptation (B, M, G)

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Permanently Remove ads | $0.99 | one-time |


## Frequently asked questions

### Is System Activity Monitors free?

System Activity Monitors is free to download, with in-app purchases available.

### Is DataMeter free?

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

### Which has better reviews, System Activity Monitors or DataMeter?

System Activity Monitors is rated higher. System Activity Monitors averages 4.2 out of 5 from 774 ratings, while DataMeter averages 3.7 from 36 ratings.

### Do System Activity Monitors or DataMeter have ads?

DataMeter shows ads; System Activity Monitors does not.

### Which is updated more often, System Activity Monitors or DataMeter?

System Activity Monitors ships an update every 3 months, and DataMeter monthly. Most recently, System Activity Monitors was updated on September 7, 2026 and DataMeter on September 23, 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.*