# System Activity Monitors vs iChecker

The clearest difference is review sentiment: System Activity Monitors at 76% against iChecker's 25%. System Activity Monitors also leads on rating (4.2 vs 3.6) and ads (none vs shown). iChecker's advantage is iOS requirement (9.0 vs 13.0). On price, update cadence, in-app purchases and monetization model 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 iChecker 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 3.6. That said, the two scores are not equally well evidenced: System Activity Monitors has 774 ratings behind it against 54, 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 25% of iChecker's.

System Activity Monitors ships an update every 3 months, iChecker every 2 months. The most recent releases landed on October 13, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | System Activity Monitors | iChecker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (774 ratings)](https://appshunter.io/ios/app/system-activity-monitors/id386118145/reviews)** | [3.6 (54 ratings)](https://appshunter.io/ios/app/ichecker-check-storage-memory/id981032667/reviews) |
| Number of ratings | **774** | 54 |
| Positive reviews | **76.0% of reviews** | 25.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 28 MB | 16 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


### iChecker

[App page](https://appshunter.io/ios/app/ichecker-check-storage-memory/id981032667)

Monitor your iOS device's RAM and disk space usage. It also helps manage your contacts by detecting and merging duplicates, and cleaning up empty entries. The app can also find and remove duplicate photos to free up storage.

**Highlights:** Check RAM usage percentage, View free disk space, Detect and merge duplicate contacts, Remove contacts without name/email, Analyze and clean duplicate photos, Refresh data button

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Permanently Remove ads | $1.99 | one-time |


## Frequently asked questions

### Is System Activity Monitors free?

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

### Is iChecker free?

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

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

System Activity Monitors is rated higher. System Activity Monitors averages 4.2 out of 5 from 774 ratings, while iChecker averages 3.6 from 54 ratings.

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

iChecker shows ads; System Activity Monitors does not.

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

System Activity Monitors ships an update every 3 months, and iChecker every 2 months. Most recently, System Activity Monitors was updated on October 13, 2026 and iChecker on October 12, 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.*