Best Device Performance Apps

83+ iOS apps curated and reviewed

4.3 avg rating
20 free apps
Updated August 2026

Whether you're new to device performance or looking for an upgrade, our curated collection of 83+ iOS apps has something for everyone. Each app is reviewed and rated by real users, helping you make an informed decision.

Compare top Device Performance Apps (August 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Device Monitor & DiagnosticsDevice Monitor & DiagnosticsFree3.8★ (73)NoYesAug 2026
2Simple Cleaner-Clean StorageSimple Cleaner-Clean StorageFree4.4★ (15K)NoYesAug 2026
3Phone Doctor PlusPhone Doctor PlusFree4.4★ (328)YesNoAug 2026
4Usage - Device MonitorUsage - Device MonitorFree4.7★ (240)NoYesAug 2026
5Device Monitor²Device Monitor²Free4.7★ (9.2K)NoYesAug 2026
6Status MonitorStatus MonitorFree4.7★ (79)NoYesAug 2026
7Profit: Portfolio PerformanceProfit: Portfolio PerformanceFree3.7★ (6)NoYesAug 2026
8120 FPS Meter & Explorer120 FPS Meter & ExplorerFreeYesYesJun 2026

Top Picks for Device Performance

Device Monitor & Diagnostics#1

Device Monitor & Diagnostics by Santiago Ramirez

CPU, System, Battery,Temp Info
Editor's Choice
📊 Productivity
3.8(73 ratings)
FreeIn-App Purchases
Device Monitor & Diagnostics screenshot 1
Device Monitor & Diagnostics screenshot 2
Device Monitor & Diagnostics screenshot 3
Device Monitor & Diagnostics screenshot 4
Device Monitor & Diagnostics screenshot 5
Device Monitor & Diagnostics screenshot 6

Gain deep insights into your device's hardware and performance. Monitor CPU, RAM, battery, and sensors, and run diagnostic tests. Generate and export detailed system reports to optimize your device's health and functionality.

Simple Cleaner-Clean Storage#2

Simple Cleaner-Clean Storage by BYMobile

Delete photo & phone album
Strong Contender
🔧 Utilities
4.4😐(15K ratings)
FreeIn-App Purchases
Simple Cleaner-Clean Storage screenshot 1
Simple Cleaner-Clean Storage screenshot 2
Simple Cleaner-Clean Storage screenshot 3
Simple Cleaner-Clean Storage screenshot 4
Simple Cleaner-Clean Storage screenshot 5
Simple Cleaner-Clean Storage screenshot 6

Free up phone storage by automatically identifying and deleting duplicate or unwanted photos, videos, and screenshots. It also helps organize your contacts by scanning, optimizing, and merging duplicates. Securely hide your media in a secret space.

What We Love

  • ⭐ Great app
  • 🚀 Quick and efficient
  • 👍 Easy to use
  • 💡 Helpful for cleaning up storage

Room to Improve

  • 🐛 Bugs and glitches
  • 💰 Expensive subscription
  • 🔒 Difficult to cancel subscription
Phone Doctor Plus#3

Phone Doctor Plus by Idea Mobile Tech inc.

Worth Considering
🔧 Utilities
4.4😊(328 ratings)
FreeAds
Phone Doctor Plus screenshot 1
Phone Doctor Plus screenshot 2
Phone Doctor Plus screenshot 3

Diagnose over 40 hardware and system issues with this app. Monitor your phone's hardware, battery, memory, and storage. Track network usage and daily charging cycles to keep your device running smoothly.

What We Love

  • 🚀 Extensive audio testing
  • 👍 Comprehensive diagnostics
  • 🔍 Detailed phone status report
  • 💡 Helpful for buying/selling used phones

Room to Improve

  • 🐛 Occasional crashes
  • 🔧 Lacks troubleshooting guidance
  • 🔍 Some tests don't work as expected

More Device Performance apps to explore

4
Usage - Device Monitor
Usage - Device Monitor
Usage - Device Monitor
Storage, network, battery
Free

Monitor your device's system activity and performance with detailed tracking of storage, memory, network, and battery usage. Customize graphs and widgets for instant insights, with cloud sync available. Upgrade to Pro for advanced features and comprehensive data.

Disk usage trackingRAM status monitoringNetwork activity monitoring
🔧 Utilities
(240)
free with in-app purchases
5
Device Monitor²
Device Monitor²
Device Monitor²
System activity info
Free

This app provides comprehensive system activity information for Apple devices, including detailed insights into hardware, sensors, and network status. It offers privacy controls, customizable widgets, and advanced testing and reporting features through optional in-app purchases.

Detailed device informationSensor access and privacy controlCustomizable widgets
🛠️ Developer Tools
(9.2K)
free with in-app purchases
6
Status Monitor
Status Monitor
Status Monitor
Device,Activity,CPU,Usage info
Free

Monitor your iPhone, iPad, Apple Watch, and Apple TV's performance with detailed insights into thermal states, memory, CPU, network, and storage usage. Offers a user-friendly interface with light and dark themes, plus customizable widgets for quick access to key information.

Thermal state monitoring with alertsDetailed memory and CPU usage graphsNetwork activity and storage tracking
🔧 Utilities
(79)
free with in-app purchases
7
Profit: Portfolio Performance
Profit: Portfolio Performance
Profit: Portfolio Performance
On-device portfolio tracking
Free

Track your investment portfolio performance securely on your Mac, iPhone, or iPad. Monitor multiple accounts, measure profit and dividends, and compare against benchmarks. Your financial data remains private and on-device.

On-device portfolio trackingMulti-account monitoringPerformance measurement (profit, dividends)
💰 Finance
(6)
free with in-app purchases
8
120 FPS Meter & Explorer
120 FPS Meter & Explorer
120 FPS Meter & Explorer
FPS Meter & Device Insights
Free
🔧 Utilities
(0)
9
PRTG - Monitoring
PRTG - Monitoring
PRTG - Monitoring
App for PRTG Network Monitor
Free

Monitor your network performance remotely with this client for PRTG Network Monitor. Receive push notifications for alarms, check status via a widget, and view detailed charts and reports on your iOS device.

Network monitoring on iPhone/iPadPush notifications for alarmsToday Widget for quick status
📊 Productivity
(2K)
free
10
Device Status⁺ CPU x Monitor z
Device Status⁺ CPU x Monitor z
Device Status⁺ CPU x Monitor z
System|Widgets|Activity|Memory
Free

Monitor and manage your iPhone or iPad's system activity and sensor data. Quickly access key device information and control app permissions for sensors. Useful for diagnostics, hardware enthusiasts, and technicians.

Monitor CPU, memory, and storageAccess location and motion sensorsTest connectivity features
🛠️ Developer Tools
(128)
free with in-app purchases
11
Thermal Status
Thermal Status
Thermal Status
Monitor your device's thermal
Free

Monitor your device's temperature in real-time to understand its performance. Get alerts before your device slows down due to overheating during demanding tasks like gaming or charging. Widgets offer quick status checks without opening the app.

Real-time thermal monitoringTemperature status (Cool, Warm, Hot, Critical)Battery level and charging status
🔧 Utilities
(30)
free with in-app purchases
12
Device Info Tool
Device Info Tool
Device Info Tool
Hardware and software details
Free

Gain in-depth knowledge of your mobile device's hardware and software. Explore detailed specifications including storage, battery health, network details, sensors, and OS version through an intuitive interface. Ideal for users seeking to understand their device's capabilities.

Detailed hardware informationComprehensive software specificationsStorage capacity details
🛠️ Developer Tools
(4)
ad-supported
13
FoxPhone - Cloud Phone Manager
FoxPhone - Cloud Phone Manager
FoxPhone - Cloud Phone Manager
by Foxphone LLC
Free
🔧 Utilities
(0)
14
Benchmark Pro: Device Test
Benchmark Pro: Device Test
Benchmark Pro: Device Test
Performance & Hardware Audit
Free
🔧 Utilities
(0)
15
Device Monitor - Diagnostics
Device Monitor - Diagnostics
Device Monitor - Diagnostics
System, CPU Battery,Temp Info
Free

Gain deep insights into your device's hardware and performance. Monitor system details, CPU/GPU specs, RAM, storage, and sensor diagnostics. A home screen widget provides real-time CPU status.

Detailed hardware specificationsReal-time CPU/GPU monitoringRAM and storage usage
📊 Productivity
(1)
free with in-app purchases
16
Macro de las Bolitas Azules
Macro de las Bolitas Azules
Macro de las Bolitas Azules
by Bouchaib Ennil
Free

Enhance your gaming performance with this tool that allows for easy macro creation and customization. Monitor FPS and device temperature to ensure optimal conditions and play without lag. Features a high-performance mode for maximum gaming efficiency.

Intuitive macro creationPerformance optimizerReal-time FPS monitoring
🔧 Utilities
(15)
free
17
Cleanlys: Clean & Boost Device
Cleanlys: Clean & Boost Device
Cleanlys: Clean & Boost Device
Optimize Storage & Performance
Free
🔧 Utilities
(0)
18
Volume Shader
Volume Shader
Volume Shader
by Shahid Ali
Free

Explore complex 3D fractal visualizations rendered natively on your iPhone or iPad. Test your device's GPU performance and check system states like thermal and battery.

Native Metal GPU renderingMandelbulb ray marchingDevice performance testing
🔧 Utilities
(1)
free with in-app purchases
19
FirmTech
FirmTech
FirmTech
The TechRing Device App.
Free

This app pairs with a TechRing device to monitor erections, tracking nocturnal events, firmness, and duration. The collected data can help users and their doctors assess sexual and overall health.

Pairs with TechRing device via BluetoothMonitors erection firmness and durationCounts nocturnal erections
💪 Health & Fitness
(15)
free
20
UpMap - Need 4 Power
UpMap - Need 4 Power
UpMap - Need 4 Power
Motorcycle ECU reflashing
Free

This app allows motorcycle riders to measure performance, share adventures, and access expert-developed maps to easily configure their bike's ECU. It offers real-time data tracking, consumption monitoring, and vehicle health checks, all from a smartphone.

ECU configurationPerformance measurementReal-time data tracking
⚽ Sports
(7)
free with in-app purchases

FAQ about Device Performance

What are the best device performance apps for iPhone?
Device Monitor & Diagnostics tops our device performance apps ranking as of August 2026, with a 3.8-star average from 73 App Store ratings, and it's free to download.
Yes — 20 of the top device performance apps we rank are free to download, including Device Monitor & Diagnostics and Simple Cleaner-Clean Storage.
Device Monitor & Diagnostics has no ads and offers in-app purchases, according to its App Store listing as of August 2026.
We track 83+ device performance apps on the iOS App Store as of August 2026, ranked by rating, recency, and analysis of real user reviews.
Device Monitor & Diagnostics offers detailed insights into your device's hardware, including CPU, RAM, display, camera, network, sensors, and battery status. It also provides analytics to help optimize performance.
Yes, the premium version of Device Monitor & Diagnostics allows you to generate a full system report and export it as a PDF. This is useful for record-keeping or sharing diagnostic information.