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Best Ceta Spec Guide Apps

248+ iOS apps curated and reviewed

4.0 avg rating
20 free apps
Updated August 2026

From beginner-friendly picks to power-user tools, our ceta spec guide list covers 248+ iPhone apps updated through August 2026. Compare ratings, prices, and screenshots in one place.

Compare top Ceta Spec Guide Apps (August 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Apple SupportApple SupportFree3.9★ (32K)YesNoAug 2026
2Basic Calculator+Basic Calculator+Free4.9★ (243K)YesNoAug 2026
3AirGradient MapAirGradient MapFree5.0★ (10)NoNoJul 2026
4Make for iOSMake for iOSFree3.3★ (32)NoNoJul 2026
5034SPI034SPIFree4.2★ (42)NoNoJul 2026
6EPA AIRNowEPA AIRNowFree3.1★ (545)NoNoAug 2026
7CO2 sensorCO2 sensorFree2.7★ (3)NoNoMay 2026
8ShizukuShizukuFree4.4★ (686)NoNoAug 2026

Top Picks for Ceta Spec Guide

Apple Support#1

Apple Support by Apple Inc.

We’re here to help
Editor's Choice
🔧 Utilities
3.9😐(32K ratings)
FreeAds
Apple Support screenshot 1
Apple Support screenshot 2
Apple Support screenshot 3
Apple Support screenshot 4
Apple Support screenshot 5

Access personalized solutions for all your Apple products and services in one convenient app. Troubleshoot issues with guided steps, chat with support, manage subscriptions, reset passwords, and find nearby service locations for Genius Bar appointments.

What We Love

  • 👍 Helpful and friendly support staff
  • 🚀 Quick response and resolution of issues
  • 💡 Useful troubleshooting features
  • 🔒 Secure and trustworthy service

Room to Improve

  • 🐛 Buggy and unreliable app performance
  • 🤖 Lack of knowledgeable support staff
  • ⏱️ Long wait times and repeated transfers
Basic Calculator+#2

Basic Calculator+ by Best Free Apps

Basic Four Function Calculator
Strong Contender
🔧 Utilities
4.9😊(243K ratings)
FreeAds
Basic Calculator+ screenshot 1
Basic Calculator+ screenshot 2

Perform essential arithmetic operations with a straightforward calculator app. Its large buttons and clear display ensure ease of use, supporting both portrait and landscape orientations.

What We Love

  • 👍 Easy to use
  • 👍 Large, clear buttons
  • 👍 Straightforward, basic functionality
  • 👍 No ads or in-app purchases

Room to Improve

  • 🐛 Inconsistent click volume
  • 🐛 Ads can be intrusive or disruptive
  • 🐛 Missing backspace/delete function
AirGradient Map#3

AirGradient Map by AirGradient Ltd.

Worth Considering
☀️ Weather
5.0(10 ratings)
Free
AirGradient Map screenshot 1
AirGradient Map screenshot 2
AirGradient Map screenshot 3
AirGradient Map screenshot 4
AirGradient Map screenshot 5
AirGradient Map screenshot 6

Get real-time, accurate air quality data with a live map, personalized alerts, and science-based guidance. Plan your day, reduce exposure, and protect your health with actionable insights.

More Ceta Spec Guide apps to explore

4
Make for iOS
Make for iOS
Make for iOS
by Celonis s.r.o.
Free

Automate workflows and sync data between your phone and hundreds of other apps. Trigger existing scenarios on the go with a tap or voice command.

Sync phone data with other appsConnect to hundreds of servicesTrigger scenarios remotely
📊 Productivity
(32)
free
5
034SPI
034SPI
034SPI
Dynamic+ Smartphone Interface
Free

This app allows users to flash their car's ECU/TCU, change fuel maps, and configure live data displays. It also provides diagnostic tools like reading and clearing DTC codes. Compatible with Dynamic+ ECU/TCU tunes and the Dynamic+ End User Flashing Dongle.

Flash ECU/TCU tunesChange fuel octane/transmission filesConfigure live data displays
🌟 Lifestyle
(42)
free
6
EPA AIRNow
EPA AIRNow
EPA AIRNow
by United States Environmental Protection Agency (USEPA)
Free

Access real-time and forecasted air quality data for your local area and any other location. Plan your day and protect your health by understanding current air conditions.

Current air quality informationForecasted air qualityLocal AQI display
☀️ Weather
(545)
free
7
CO2 sensor
CO2 sensor
CO2 sensor
Display SCD-41 CO2 readings.
Free

Monitor CO2, temperature, and humidity levels in real-time using a Bluetooth sensor. Save readings with location data and sync them across Apple devices via iCloud. View historical data on a map.

Real-time CO2, temperature, and humidity readingsBluetooth sensor integrationSave readings with location
🔧 Utilities
(3)
free
8
Shizuku
Shizuku
Shizuku
welcome to Shizuku app
Free

Access essential system information and developer tools on your iPhone and iPad. This app offers detailed device specifications, storage, battery, and network data, alongside a suite of powerful utilities like JSON formatting, QR code generation, and text comparison.

System information panelsDevice specificationsStorage and battery status
🔧 Utilities
(686)
free
9
User guide for iPhone & iPad
User guide for iPhone & iPad
User guide for iPhone & iPad
by Anna Lozovskaya
Free

Learn the latest iOS 9 features with this comprehensive guide. It's structured like a training course, starting with basics and progressing to advanced topics, perfect for both new and experienced users.

iOS 9 feature tutorialsiPhone and iPad compatibilityStep-by-step learning
📚 Books
(529)
free with in-app purchases
10
Free Guide for iOS 7 - How to use IOS 7
Free Guide for iOS 7 - How to use IOS 7
Free Guide for iOS 7 - How to use IOS 7
by 小龙 傅
Free

This app provides a comprehensive guide to iOS 7, covering new features, usage instructions, and helpful tips. It aims to help users quickly master the functionalities of the operating system with rich graphics and an intuitive interface.

New features explainedInstructions for useTips and tricks
🔧 Utilities
(1)
free
11
PT Chart Refrigerants EU
PT Chart Refrigerants EU
PT Chart Refrigerants EU
by Honeywell International, Inc.
Free

This reference tool provides HVAC mechanics with a digital pressure-temperature (PT) chart. Users can select refrigerants to access necessary data and quickly calculate superheat and subcool averages directly from their iPhone or iPad.

Digital pressure-temperature chartRefrigerant selectionField data access
🔍 Reference
(3)
free
12
Guide Dose：医生专用
Guide Dose：医生专用
Guide Dose：医生专用
臨床の意思決定支援
Free

This app provides healthcare professionals and students with quick access to clinical information, drug doses, and decision-support tools. It features a structured experience for study, reference, and organizing medical data, including AI-powered informational support.

Search by medication or indicationPatient profile for contextualized readingsOrganized clinical references and labeling
🏥 Medical
(0)
subscription
13
Blueair
Blueair
Blueair
Healthier living starts here
Free

Monitor and control your indoor air quality in real-time. Gain insights and manage your environment effectively with intelligent features, whether you're at home or away. Experience healthier living through advanced air care.

Real-time air quality trackingSeamless device controlsInsight and control of air
🌟 Lifestyle
(23K)
free
14
E-Tuner 4
E-Tuner 4
E-Tuner 4
by Edelbrock Corp
Free

This app connects wirelessly to an EFI system, allowing users to monitor engine data and adjust various settings like air-fuel ratios and ignition timing. It offers a setup wizard for initial calibration and advanced tuning options for performance optimization.

Bluetooth ECU communicationLive tuning of ECU settingsReal-time engine and sensor data monitoring
🔧 Utilities
(22)
free
15
HVAC PT Chart
HVAC PT Chart
HVAC PT Chart
HVAC Pressure/Temp Charts
Free

This tool provides HVAC technicians with instant access to pressure and temperature data for over 100 refrigerants. It allows users to input one value to find the other, view detailed refrigerant properties, and email comprehensive charts and data.

Pressure/temperature lookup for 100+ refrigerantsInput temperature to find pressure, or vice versaSlider control for precise value selection
📊 Productivity
(8)
free
16
Belimo Assistant 2
Belimo Assistant 2
Belimo Assistant 2
by BELIMO Automation AG
Free

This app allows for the setup, operation, and troubleshooting of Belimo devices like actuators and valves using a smartphone or tablet. It offers features for checking parameters, monitoring device status, and generating reports.

Device parameter modificationIdentification data displayMP-Bus, BACnet, Modbus addressing
🔧 Utilities
(10)
free
17
Airtekk
Airtekk
Airtekk
by Auto jaw co ltd
Free

Control your vehicle's air suspension system remotely via Bluetooth. Monitor air pressure in real-time and adjust individual air struts for optimal dynamics. The app offers a simple interface and multilingual support.

Bluetooth controlIndependent air strut adjustmentReal-time air pressure display
🔧 Utilities
(16)
free
18
My Device Info!
My Device Info!
My Device Info!
Info, Tips, Widgets, and more!
Free

Get detailed information about your iOS device, including specs, battery health, display, and storage. Access key data through convenient lock screen and home screen widgets. Manage your device better and discover its hidden features.

Device specificationsBattery health monitoringDisplay details
🔧 Utilities
(304)
free with in-app purchases
19
Dry Tools
Dry Tools
Dry Tools
Tools for HVAC professionals
Free

This app provides HVAC professionals and students with essential calculation tools, including air stream mixing, HVAC formulas, lead time planning, and a psychrometric calculator with weather data. It also offers educational content and industry-specific terminology.

Air Stream Mixing CalculatorHVAC FormulasLead Time Wheel
💼 Business
(5)
free
20
TEC Auto Test
TEC Auto Test
TEC Auto Test
by The Energy Conservatory
Free

This app automates building envelope and duct system airtightness testing by wirelessly connecting to specific pressure gauges. It collects test data, calculates results, and generates PDF reports, with features like wind assistance for improved accuracy.

Automated building envelope and duct system testingWireless connection to DG-1000 and DG-700 gaugesPDF report generation and export
💼 Business
(4)
free

FAQ about Ceta Spec Guide

What are the best ceta spec guide apps for iPhone?
Apple Support tops our ceta spec guide apps ranking as of August 2026, with a 3.9-star average from 32K App Store ratings, and it's free to download.
Yes — 20 of the top ceta spec guide apps we rank are free to download, including Apple Support and Basic Calculator+.
Apple Support shows ads and has no in-app purchases, according to its App Store listing as of August 2026.
We track 248+ ceta spec guide apps on the iOS App Store as of August 2026, ranked by rating, recency, and analysis of real user reviews.
The Apple Support app provides personalized solutions for all your Apple products and services. You can learn how to manage subscriptions, reset your Apple Account password, troubleshoot issues with guided steps, chat with support, and find nearby locations to book Genius Bar or Apple Authorized Service Provider appointments.
No, you are not required to purchase an AppleCare+ plan to use the Apple Support app. The app is available to all Apple product owners seeking support, regardless of whether they have an AppleCare+ plan.