Comparison

Device Kit vs One Tool Box

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Device Kit

Monitor your device's hardware performance in real-time with detailed CPU, memory, and battery usage. Access a suite of practical tools including weather, network diagnostics, and sensors. Visualize historical data with customizable charts and home screen widgets.

Highlights
  • Real-time CPU, memory, and battery monitoring
  • Visual data charts for performance trends
  • Picture-in-Picture mode for continuous monitoring
  • Customizable home screen widgets
  • Pro Toolbox with system, environment, and network tools
  • Sensor data including compass and barometer
Features
Read full description

Device Kit — Your iPhone's All-in-One Health Checker, Take Full Control of Your Device in Real Time! Ever wonder how hot your phone really is? How fast is it charging? Is your CPU about to max out? Is your network being throttled? Device Kit gives you the most intuitive, real-time, and comprehensive answers. ▸▸ Core Monitoring at a Glance ◂◂ CPU Temperature — Real-time device temperature with smart estimates for battery and body temperature. 6-level thermal warning system alerts you before your phone overheats. CPU Usage — Real-time CPU utilization monitoring with user/system/idle breakdowns, plus historical trend charts to track load changes. Network Speed — Real-time speed for both Wi-Fi and cellular networks. Monitor upload/download speeds, peak speeds, and daily data usage stats. Battery Status — Charge level, charging state, low-power mode, thermal status — full battery health insights. Memory & Storage — Used/total capacity with breakdowns, storage usage percentage — say goodbye to storage anxiety. ▸▸ Dynamic Island & Floating Widgets — Desktop Monitoring ◂◂ Dynamic Island Live Monitor — No need to open the app. While your phone is locked or you're using other apps, the Dynamic Island shows real-time CPU temperature, network speed, and CPU usage with live updates. Picture-in-Picture Floating Widget — A persistent floating window on your home screen monitors network speed, temperature, and CPU. Drag it anywhere, use it while doing other tasks — true desktop-level monitoring experience. Motion Tracker on Dynamic Island — While recording motion trajectory, the Dynamic Island displays real-time distance, duration, and speed. ▸▸ Charging Power Detection ◂◂ Real-time Power Estimation — Detects charging power (W) in real time, telling you whether it's slow charging, standard charging, or fast charging. Charging Speed Rating — Slow / Standard / Fast / Ultra — clear at a glance. Charging Statistics — Duration, peak power, and total energy charged — a complete charging report. History Log — Every charging session is automatically saved for later review and comparison. ▸▸ 18 Practical Tools ◂◂ 【System Tools】 Flashlight (9 blink modes with brightness adjustment), Haptic Feedback, Multi-Touch Test, Motion Tracker 【Network Tools】 Ping, Telnet, SSH (Pro) 【Utility Tools】 QR Code Generator, Decibel Meter, Password Generator 【Sensor Tools】 Compass, GPS, Gyroscope, Magnetometer, Barometer, Altimeter, Proximity Sensor 【Display Tools】 Color & Brightness Adjustment 【Environment Tools】 Weather (Pro) ▸▸ Home Screen Widgets ◂◂ Home Screen Widgets — Uptime, Weather, CPU, Temperature, Memory, Storage, Clock, Device Info, Quick Actions. Available in Small, Medium, and Large sizes. Lock Screen Widgets — Weather, Storage, Uptime — check key info without unlocking. 【Auto-Renewable Subscription Terms】 Pro membership is an auto-renewing subscription billed monthly or yearly. Payment will be charged to your Apple ID account upon confirmation of purchase. The subscription will automatically renew within 24 hours prior to the end of the current period unless auto-renew is turned off at least 24 hours before the end of the current period. To cancel, please turn off auto-renewal in Settings > Apple ID > Subscriptions at least 24 hours before the current period ends. You can manage or cancel your subscription anytime after purchase in your account settings. Any unused portion of a free trial period (if offered) will be forfeited when you purchase a subscription. 【Privacy Policy & Terms of Service】 Privacy Policy: https://device-kit.pages.dev/private Terms of Service: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Download Device Kit and keep your device under your complete control!

About

One Tool Box

Features
Read full description

One Tool Box brings together the everyday utilities you'd otherwise need a dozen separate apps for — documents, PDFs, photos, audio, and more — in one fast, focused app that never leaves your device. DOCUMENTS & PDF - Scan documents with auto-straightening and clean output - Sign PDFs by hand, place and flatten your signature - Merge, organize, reorder, and page-number PDFs - Compress PDFs while keeping text sharp - Password-protect PDFs and add watermarks - Convert PDFs to images and images to PDF - Copy IDs and passports to a print-ready sheet - Official letters and attestations for 7 countries (France, Germany, Spain, Italy, UK, US, China), written in the local language and ready to send PHOTOS & IMAGES - Retouch: heal blemishes, censor, adjust, apply filters and crop - Remove backgrounds automatically - Compress and convert between image formats - Add watermarks, stitch panoramas, compare images side by side - Crop to circles, split into grids, read EXIF data - Pick colors from any photo - Passport and ID photos sized to spec AUDIO & FILES - Transcribe recordings to text, fully on-device - Convert audio and video between common formats - Encrypt and decrypt files and folders, interoperable with your computer - A private vault for sensitive documents - OCR: pull text out of scanned pages and images - Translate text between languages - Word count and text utilities FOR LIFE IN FRANCE - Income tax and mileage allowance calculators - VAT calculator - IBAN checker - Notaire and calendar helpers Everything happens locally on your device: no accounts, no ads, no analytics, no data collection of any kind. One Tool Box contains no networking code whatsoever, so nothing you scan, sign, encrypt, or transcribe can ever leave your device. One purchase. Every tool. Nothing else needed.

Screenshots

Device Kit4 screens
One Tool Box4 screens

Verdict

The call

The clearest difference is update cadence: Device Kit at every 10 days against One Tool Box's monthly. On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Device Kit sells 4 in-app purchases, starting at $3.99 per month and One Tool Box sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Device Kit ships an update every 10 days, One Tool Box monthly. The most recent releases landed on October 28, 2026 and October 25, 2026 respectively.

Scorecard1 real difference · 9 level
Device Kit versus One Tool Box: the parameters behind the verdict, then further details
ParameterDevice KitOne Tool Box
PriceFreeFree
Rating4.9 (90 ratings) — better—
Positive reviews77.4% of reviews—
Number of ratings90 — better—
Update frequencyEvery 10 days — betterMonthly
AdsNoNo
In-app purchasesYesYes
MonetizationFreemium—
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.0 — better18.4
Further details — not scored
Size36 MB16 MB
Age rating4+4+
DeveloperShuyang Fan Ziyang Software Development Studio (Individually Owned Business)吉 汤

In-app purchases

4 purchases

Device Kit

Subscriptions2
  • Monthly subscription$3.991 Month
  • Yearly subscription$7.991 Year
One-time2
  • Lifetime Membership$12.99
  • Lifetime Membership$14.99
1 purchases

One Tool Box

One-time1
  • Letters Export$0.99

Questions

Is Device Kit free?
Device Kit is free to download, with in-app purchases available.
Is One Tool Box free?
One Tool Box is free to download, with in-app purchases available.
Do Device Kit or One Tool Box have ads?
Neither Device Kit nor One Tool Box shows ads.
Which is updated more often, Device Kit or One Tool Box?
Device Kit ships an update every 10 days, and One Tool Box monthly. Most recently, Device Kit was updated on October 28, 2026 and One Tool Box on October 25, 2026.

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