Della ▸ Call Assistant vs Voice Agent Builder
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Della ▸ Call Assistant
This app acts as a virtual receptionist, answering calls 24/7, booking appointments, qualifying leads, and providing instant summaries of messages. It supports multiple industries and offers features like voice cloning and multi-language support.
- 24/7 call answering
- Automated appointment booking
- Lead qualification
- Instant message summaries
- Multi-language support
- Customizable voice cloning
- Unified business inbox
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Introducing Della, your new virtual receptionist. She answers every call so you never lose a customer to voicemail. Whether you're cutting hair, with a patient, on a job site, or focused on another client, Della picks up, sounds professional, books appointments straight into your calendar, qualifies leads, answers your most‑asked questions, and texts you the moment something needs your attention. Built for solo professionals and growing teams across 19 industries: • Construction, home services, repair, cleaning, landscaping • Creative studios, agencies, and freelancers • Real‑estate brokers and property managers • Restaurants, caterers, event planners, florists, photographers, DJs, venues • Hair & beauty salons, barbershops, nail studios, lash & brow bars, spas • Medical, dental, chiropractic, mental‑health, and veterinary practices • Law firms, accounting offices, consulting and software practices WHAT Della DOES • Answers calls 24/7 in a warm, natural voice • Books appointments directly into your calendar (Apple, Google, Outlook) • Qualifies new leads and asks the right questions for your industry • Takes messages and texts you with an instant summary • Sends booking confirmations and quotes by SMS or email • Speaks 14+ languages and switches automatically to your caller's language • Can also make outbound calls, cold calling and follow‑up calls when you ask her to CLONE YOUR OWN VOICE (Pro) Record two short samples and Della will sound exactly like you on every call. Same warmth, same accent, same trust your customers already know. Consent first, you stay in control. ONE INBOX FOR YOUR BUSINESS Every conversation Della has lands in one place on your iPhone: • Booking Requests — confirm, reschedule, or share the .ics with one tap • Prospects — new leads Della captured, with transcripts and call recordings • Contacts — Customers, Leads, and a full Activity timeline KNOWLEDGE BASE & TECHNICAL SUPPORT Teach Della anything about your business, pricing, hours, services, policies, FAQs — and she answers accurately, every time. Built‑in triage routes urgent issues to whoever is on call. BOOKINGS THAT JUST WORK Share your personal booking link anywhere, SMS, Instagram bio, email signature, QR code, and let customers self‑serve while Della keeps your calendar tidy. QUOTES & FOLLOW‑UPS Send branded quotes from your phone with accept / decline links. Turn accepted quotes into invoices in one tap. MULTI‑LOCATION READY Run several locations from one account, with per‑location services, calendar, and receptionist persona. Switch in a tap. PRIVACY FIRST You own your data. Recordings, transcripts, and contacts are encrypted at rest and never used to train third‑party models. You can pause Della or delete a recording any time. Terms of Use (EULA): https://www.apple.com/legal/internet-services/Anitunes/dev/stdeula/
Voice Agent Builder
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Aitelier turns the phone into a salesperson, receptionist, and dispatcher that never misses a call. Voice Agent Builder is the mobile companion of the Aitelier Voice Platform — a voice AI that takes and places real phone calls for your business. Configure your agent by talking to your phone, hear it live in seconds, and let it work while you sleep. WHO IT'S FOR Restaurants taking bookings on the side. Salons and clinics that lose walk-ins because the phone rings while they're with a client. Sales teams that need every lead followed up the same day. Owners who are tired of "sorry, we missed your call." WHAT YOU CAN DO FROM THE APP • Describe your business out loud — the AI assembles your agent • Hear the agent on a real test call, in-app, with one tap • Read every call as a short, business-language summary: goal, outcome, what to change next • Edit goals in plain language; the agent re-aligns • Get push notifications when calls start drifting from your goals — accept or refine the fix in under a minute WHY THIS AGENT IS DIFFERENT • AI-first. No JSON, no scripts, no scenario editors on your phone. You describe the business, the agent builds itself. • Goals stay live. The platform watches real conversations and surfaces drift before customers complain. • Audible by default. Every change is one tap away from a live test call. • Reversible. Every AI proposal is a named, shown diff you can accept, modify, or undo. WHAT THE AGENT DOES ON CALLS • Answers inbound calls 24/7 • Books restaurant tables, salon appointments, service slots • Qualifies leads and schedules sales meetings • Captures the details that matter — party size, date, contact, special requests • Hands off to a human when it should, with no looping or robotic dead-ends PRIVACY AND CONTROL You own your data. The mobile app talks to Aitelier servers over HTTPS. The camera is never enabled — the permission only exists because our voice SDK references the API. The microphone is used only during in-app test calls. Sign out of all devices any time. GETTING STARTED Sign in, describe your business in 30 seconds, hear the agent on a test call. The Agent Creator handles the setup. The full engineering surface — scripts, plugins, raw scenarios — lives in the web office at aitelier.org; the phone is built for owners, not engineers.
Screenshots
Verdict
The clearest difference is in-app purchases: Voice Agent Builder at none against Della ▸ Call Assistant's 10. Voice Agent Builder also leads on iOS requirement (13.0 vs 17.6). On price, update cadence, ads 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
Both are free to download. Della ▸ Call Assistant sells 10 in-app purchases, starting at $19.99 per month. Voice Agent Builder asks for nothing beyond the download.
Della ▸ Call Assistant ships an update weekly, Voice Agent Builder every 4 days. The most recent releases landed on October 13, 2026 and October 12, 2026 respectively.
| Parameter | Della ▸ Call Assistant | Voice Agent Builder |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (9 ratings) — better | — |
| Positive reviews | 43.9% of reviews | — |
| Number of ratings | 9 — better | — |
| Update frequency | Weekly | Every 4 days — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Subscription | — |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.6 | 13.0 — better |
| Further details — not scored | ||
| Size | 108 MB | 39 MB |
| Age rating | 4+ | 17+ |
| Developer | iCubemedia Inc. | Andrey Sapunov |
In-app purchases
Della ▸ Call Assistant
- Personal Starter Plan$19.991 Month
- Solo Plan$34.991 Month
- Plan Perso Pro for Personal usage$49.991 Month
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- Starter Plan$59.991 Month
- Pro Plan$179.991 Month
- 200 Coins$9.99
- 100 Coins$19.99
- 500 Coins$49.99
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- 1500 Coins$99.99
- 1000 Coins$99.99
Voice Agent Builder
No in-app purchases
Questions
Is Della ▸ Call Assistant free?
Is Voice Agent Builder free?
Do Della ▸ Call Assistant or Voice Agent Builder have ads?
Which is updated more often, Della ▸ Call Assistant or Voice Agent Builder?
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