NASTF vs Nexfield
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
NASTF
This app offers a secure multi-factor authentication solution for registered members. It provides enhanced account protection through push notifications and time-based one-time passcodes for login verification.
- Multi-factor authentication
- Push notification approvals
- Time-based one-time passcodes
- Enhanced account security
- Streamlined login process
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The official NASTF Authenticator app provides a streamlined and secure multi-factor authentication (MFA) solution for all registered National Automotive Service Task Force (NASTF) members. Secure your account and protect sensitive automotive data by adding a critical layer of verification to your login process. With the NASTF Authenticator, you can easily verify your identity when accessing your account, ensuring that only you can access your information. When you log in, the app will prompt you to approve the request via a simple push notification or by using a time-based one-time passcode (OTP). Key Features: * Enhanced Security: Protect your NASTF account from unauthorized access with robust two-factor authentication. * Push Notifications: Receive instant notifications for one-tap login approval, making the process quick and seamless. * Passcode Generation: Generate verification codes directly on your device for Automaker and Scan Tool authentication. * Simple Setup: Quickly and easily link your account by signing in and verifying your account. This app is an essential tool for all automotive professionals and security professionals registered with NASTF. Download today to add an extra layer of security to your account. Please Note: This app is for use by registered NASTF members only and requires a valid NASTF account to function.
Nexfield
This app uses AI to answer business calls, book appointments, and manage job schedules. It streamlines client communication, invoicing, and payments for service-based businesses.
- AI-powered call answering
- Automated job booking
- Schedule and dispatch management
- Estimate and invoice generation
- Tap to Pay functionality
- Unified client inbox
- Team management
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Nexfield answers the calls you can't take, books the job into your schedule and gets you paid before you leave. One app for the owner, the office and every technician. AI PHONE LINE The AI answers your company line, asks what the problem is and offers only the times you have open. It books the job, moves or cancels a visit when a client calls back, keeps a summary, transcript and recording of the call, and passes the caller to you when they ask for a person. THUMBTACK LEADS, BOOKED Connect your Thumbtack account and the AI replies to new leads right away, answers their questions and books the job into your schedule. Every conversation lands in your Inbox. SCHEDULE & DISPATCH Today shows every job, who is on it and what still needs you. Assign technicians on the calendar, find the jobs still waiting for a date, and get reminders before each visit, each morning or the evening before. ESTIMATES, INVOICES AND TAP TO PAY ON IPHONE Send estimates clients sign and invoices they pay from a link. Get paid with Tap to Pay on iPhone, a typed card, cash or check, with tips and receipts, then send the money to your bank. INBOX Calls and texts with every client in one list, from your company number instead of your cell. Each AI call shows whether it booked, moved or cancelled a job. YOUR TEAM Add technicians and choose what each one sees. They get their jobs in order, directions, up to 20 photos per job, expenses and their own pay. Payroll, deductions and expense approvals stay with you. BUILT FOR IPAD On iPad and the open iPhone Duo, the list stays on the left and the job, invoice or conversation opens on the right. Command-N starts a new job and Command-F searches. On iPad, cards are typed in. Answer the call, do the job, get paid. All in Nexfield. GOOD TO KNOW • You need a Nexfield business account. Owners create one in the app or at nexfield.pro; technicians sign in with the login their owner makes. • For businesses in the United States. Amounts are in US dollars. • Tap to Pay on iPhone needs iPhone XS or later, with card payments turned on for the business. • The AI phone line needs a business phone number and the AI assistant turned on by the owner. Terms of Use: https://nexfield.pro/terms Privacy Policy: https://nexfield.pro/privacy
Screenshots
Verdict
The clearest difference is review sentiment: Nexfield at 100% against NASTF's 50%. Nexfield also leads on rating (5.0 vs 3.3) and update cadence (weekly vs every 3 weeks). On price, ratings volume, ads and in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Nexfield holds the better App Store score, 5.0 against 3.3. Both are backed by a comparable volume of ratings — 7 and 12 respectively. Written reviews point the same way: 50% of NASTF's written reviews are positive against 100% of Nexfield's.
NASTF ships an update every 3 weeks, Nexfield weekly. The most recent releases landed on November 4, 2026 and November 9, 2026 respectively.
| Parameter | NASTF | Nexfield |
|---|---|---|
| Price | Free | Free |
| Rating | 3.3 (7 ratings) | 5.0 (12 ratings) — better |
| Positive reviews | 50.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 7 | 12 — better |
| Update frequency | Every 3 weeks | Weekly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.1 — better | 16.4 |
| Further details — not scored | ||
| Size | 39 MB | 122 MB |
| Age rating | 4+ | 4+ |
| Developer | NASTF | Westminster Innovation LLC |
Customer experience
NASTF
Nexfield
In-app purchases
NASTF
No in-app purchases
Nexfield
No in-app purchases









