Comparison

GoodReader PDF Editor & Viewer vs ATA Technician Assistant

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

Head to head
About

GoodReader PDF Editor & Viewer

This app offers robust PDF editing and viewing capabilities, alongside comprehensive file management tools. It allows users to annotate PDFs, manage files from various cloud services, and secure sensitive data with advanced encryption. Enjoy a superior reading experience with features like PDF Reflow and split-screen viewing.

Highlights
  • PDF annotation and editing
  • Extensive file format support
  • Cloud service integration (Dropbox, Google Drive, etc.)
  • AES-256 military-grade encryption
  • Split-screen viewing for iPad
  • File management and organization
Features
Currently charting
Read full description

First released in 2009, GoodReader® is truly a veteran of the App Store. In the modern app business, it's not easy to stay relevant that long. We're proud to say that after 17 years and counting, we've been delivering wonderful updates with extraordinary new features. And we're going to keep doing that! GoodReader is a perfect combination of document-reading and file-managing capabilities. It's your one-stop shop for all your document needs on your iOS device. Use the app once, and you'll be hooked. Soon you'll be wondering how you ever managed to work without it. -= File Reading =- PDF, TXT, MS Office, iWork, HTML, pictures, music & audio-books, videos. This is what you can view in GoodReader, plus you can also annotate PDF files and edit TXT files. -= PDF Reading and Annotating =- PDF files is where GoodReader truly shines. Reading experience is so superior, it's hard to describe. To rephrase one of our customers' review, "try it, and you'll see." While you're at it, give our PDF Reflow feature a try. You'll be surprised how much better PDF reading goes when you don't have to scroll left/right all the time, for every single line of text. Annotating PDFs is another star feature of our app. Adding notes and drawings, highlighting text, and then sharing your annotated files or annotation summaries will be your main productivity and collaboration asset. -= File Management =- While reading files is a big part of GoodReader, it's not all it can do. It can also serve as a central hub for all your files, even those that can't be opened by GoodReader itself. It's like bringing your personal computer experience to your mobile device — easily managing huge collections of files and folders will make you forget you don't have your laptop around. -= Connecting =- Dropbox, OneDrive, Google Drive, Box.com, WebDAV, SMB, FTP, SFTP — these are all accessible from inside GoodReader. Download, upload, and sync individual files or huge folder collections. -= Security =- With GoodReader, your data security steps up to the level previously only dreamt of. With Pro Pack®, our new set of professional-level super-features, you'll get AES-256, a military-grade encryption, for all your data, at a price of a cup of coffee! And it's completely independent from the built-in Apple's Data Protection, so even if a hacker steals and unlocks your device, your data will still be protected by another strong layer of security, our own. -= Multi-Windows =- Seamlessly view and manage multiple files simultaneously on iPad. -= Notes =- Capture ideas and comments while reading or studying a technical document without even leaving the app. Sort and group your notes into categories. (Note: Some features require a Pro Pack® subscription.)

About

ATA Technician Assistant

This app provides electricians with a comprehensive set of tools and resources for job site efficiency. It includes code lookups, calculations, troubleshooting guides, and estimation features. Designed by an electrician for electricians, it aims to streamline workflows and improve accuracy.

Highlights
  • NEC code lookup and explanations
  • Electrical calculations (Ohm's Law, voltage drop)
  • Professional bid generation
  • Lighting controls troubleshooting
  • Lockout/Tagout (LOTO) safety alerts
  • Nameplate scanner for installation instructions
  • Inspection checklists
Features
Read full description

ATA — Alpha Technician Assistant is the all-in-one app for working electricians, built by an electrician who got tired of juggling five tools on a job site. Whether you're an apprentice learning the trade, a solo contractor bidding work, or running a crew, ATA puts the field in your pocket. WHAT'S INSIDE Ask ATA Anything — Get answers on NEC codes, troubleshooting, and calculations in plain language, right when you need them. Electrical Toolkit — Ohm's Law, voltage drop, conduit fill, nipple fill, pipe bending, wire ampacity, and lighting controls troubleshooting, with the NEC articles that apply. Estimate Pro — Turn a job into a professional bid in minutes. Add your company info and logo, load a job template, adjust line items, set your markups, and send a clean PDF estimate straight to the client or project manager. Lighting Controls Troubleshooting — Step-by-step diagnostics for 0-10V dimming, line-voltage phase control, and occupancy/vacancy sensors — with built-in safety reminders and code references. Plus workflows, equipment library, LOTO safety, voice notes, inspection reports, nameplate scanning, and more. ATA is built for the field — by someone who's been there. MASTER ELECTRICIAN WORKFLOWS Step-by-step field guides for residential, commercial, solar, and industrial electrical work. PROFESSIONAL ELECTRICAL TOOLKIT Ohm's Law Calculator, Voltage Drop Calculator, Conduit Fill Calculator, Pipe Bending Calculator, Wire Ampacity Table and more. LOTO ALERT SYSTEM Send instant lockout/tagout safety notifications to coworkers and supervisors. OSHA 29 CFR 1910.147 compliant. NAMEPLATE SCANNER Scan any equipment nameplate and get instant installation instructions and NEC code requirements. INSPECTION CHECKLISTS Complete inspector walkthrough checklists for rough-in, final, solar and commercial inspections. ACRONYM DICTIONARY 50 plus electrical acronyms with definitions and AI explanations. VOICE NOTES AND PUNCH LIST Record voice notes on the job site and manage punch lists with email reporting. BOOK A COACH Connect with senior master electricians for live coaching sessions. Try free for 7 days! Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

GoodReader PDF Editor & Viewer3 screens
ATA Technician Assistant4 screens

Verdict

The call

The clearest difference is price: ATA Technician Assistant at Free against GoodReader PDF Editor & Viewer's $6.99. ATA Technician Assistant also leads on update cadence (daily vs weekly) and rating (5.0 vs 4.7). GoodReader PDF Editor & Viewer's advantage is ratings volume (14K vs 1) and chart position (#29 vs unranked). On ads, in-app purchases, monetization model 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

ATA Technician Assistant is free to download; GoodReader PDF Editor & Viewer costs $6.99 up front. GoodReader PDF Editor & Viewer sells 4 in-app purchases, starting at $3.99 per month and ATA Technician Assistant sells 6 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

ATA Technician Assistant holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: GoodReader PDF Editor & Viewer has 14K ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

GoodReader PDF Editor & Viewer ships an update weekly, ATA Technician Assistant daily. The most recent releases landed on October 23, 2026 and October 1, 2026 respectively.

Scorecard5 real differences · 6 level
GoodReader PDF Editor & Viewer versus ATA Technician Assistant: the parameters behind the verdict, then further details
ParameterGoodReader PDF Editor & ViewerATA Technician Assistant
Price$6.99Free — better
Rating4.7 (14K ratings)5.0 (1 ratings) — better
Positive reviews68.7% of reviews—
Number of ratings14K — better1
Update frequencyWeeklyDaily — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
Best chart rank#29 — better—
DevicesiPhone, iPad — betteriPhone
Requires iOS17.616.4 — better
Further details — not scored
Size53 MB50 MB
Age rating4+4+
DeveloperGood.iWare, Inc.Fritz Valdeus

Bugs and requests

GoodReader PDF Editor & Viewer

Reported bugs

3 issues
  • Syncing issues with cloud storage providers
  • Compatibility problems with newer iOS versions
  • Inconsistent behavior when switching between apps

Requested features

5 requests
  • Continuous scrolling for better reading experience
  • Improved search functionality with advanced filters
  • Ability to set custom color schemes and themes
  • Enhanced support for ebook formats like EPUB
  • Streamlined annotation tools and workflow

ATA Technician Assistant

Not enough reviews yet to summarise bugs or requests.

In-app purchases

4 purchases

GoodReader PDF Editor & Viewer

Subscriptions2
  • Pro Pack (monthly)7 Days trial$3.991 Month
  • Pro Pack (annual)7 Days trial$24.991 Year
One-time2
  • Auto Sync$59.99
  • Pro Pack$89.99
6 purchases

ATA Technician Assistant

Subscriptions3
  • Basic$9.991 Month
  • Pro$24.991 Month
  • Enterprise$149.991 Month
One-time3
  • 30 Coaching Minutes$49.99
  • 60 Coaching Minutes$89.99
  • 120 Coaching Minutes$159.99

Questions

Is GoodReader PDF Editor & Viewer free?
GoodReader PDF Editor & Viewer costs $6.99, and also offers in-app purchases.
Is ATA Technician Assistant free?
ATA Technician Assistant is free to download, with in-app purchases available.
Which has better reviews, GoodReader PDF Editor & Viewer or ATA Technician Assistant?
ATA Technician Assistant is rated higher. GoodReader PDF Editor & Viewer averages 4.7 out of 5 from 14K ratings, while ATA Technician Assistant averages 5.0 from 1 ratings.
Do GoodReader PDF Editor & Viewer or ATA Technician Assistant have ads?
Neither GoodReader PDF Editor & Viewer nor ATA Technician Assistant shows ads.
Which is updated more often, GoodReader PDF Editor & Viewer or ATA Technician Assistant?
GoodReader PDF Editor & Viewer ships an update weekly, and ATA Technician Assistant daily. Most recently, GoodReader PDF Editor & Viewer was updated on October 23, 2026 and ATA Technician Assistant on October 1, 2026.

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