Cero
Cero automates hospital and clinic patient communication across Latin America over WhatsApp, voice and SMS — reminders, confirmations, waiting lists and
If you run patient operations in Latin America and no-shows are a measurable revenue leak, Cero is one of the few tools built for your stack rather than adapted to it: WhatsApp-first outreach, natural-language confirmation capture that tolerates typos and emojis, waiting-list release and rescheduling automation, and documented connectors to regional EMRs like Tasy, MV and Pixeon. The vendor reports over 1,000,000 appointments coordinated monthly across 250+ centres, which is a real operating track record, not a pilot. It is a poor fit for solo practices with low appointment volume, for teams who insist on phone-call-only or SMS-only contact, and for anyone outside LatAm — this is a focused
Verified 11d ago · liveness 73/100 · cite: rightaichoice.com/tools/cero
- Hospital operations managers in Brazil, Mexico, Colombia, Chile, Argentina and Peru
- Clinic administrators trying to cut no-show rates and refill cancelled slots
- Healthcare organisations with high monthly appointment volumes
- Telemedicine and outpatient clinics running WhatsApp-based patient outreach
- North American or European healthcare systems — Cero is built for Latin American markets
- Solo practitioners with very low monthly appointment volume
- Teams that require phone-call-only or SMS-only communication
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Skip Cero if you operate outside Latin America, or if your clinic sends only a handful of appointment messages a month and cannot justify a volume-scaled patient-communication platform.
Broadcast campaigns and mass notifications drive message volume on WhatsApp's business API, and heavy sending can run into provider rate limits and per-message costs on top of your Cero tier.
Positioned for clinics, hospitals and multi-specialty groups with enough appointment volume that a no-show reduction pays for the platform. That puts it above cheap single-channel reminder tools and below full patient-CRM suites. Solo practices and very low-volume clinics will not get the return; multi-site groups should compare against custom builds on their own EMR's messaging module.
In short
Cero — Cero automates hospital and clinic patient communication across Latin America over WhatsApp, voice and SMS — reminders, confirmations, waiting lists and. Best for Hospital operations managers in Brazil, Mexico, Colombia, Chile, Argentina and Peru, Clinic administrators trying to cut no-show rates and refill cancelled slots, Healthcare organisations with high monthly appointment volumes. Plans from $500/mo.
What people actually say about Cero — is it worth it?
We ran a structured research pass across product reviews, community discussions, and post-purchase forum threads to surface the patterns vendors won't publish themselves. Below: the recurring strengths, the hidden costs people mention most, and the cohort that consistently regrets adopting this tool.
29 mentions across 6 sources (Hacker News, YouTube, Product Hunt, App Store, GitHub, Lemmy), 54 more we could not attribute · researched Sep 14, 2026.
Weighted by the 83 posts each of 6 sources contributed.
- +Purpose-built for LatAm healthcare, with WhatsApp-first design matching regional communication habits
- +Deep EMR integration list (Tasy, MV, Pixeon, Soul MV) is broader than most generic competitors
- +No-code workflow builder lets clinic ops teams design patient journeys without engineering help
- +Founder has real clinical experience as a practicing dentist, giving the product credible domain empathy
- +Two-way communication handles both inbound patient questions and outbound reminders in one system
- −No free tier or trial, so clinics must commit $500/month after only a sales demo
- −Nearly zero independent user reviews or case studies to verify no-show reduction claims
- −Brand name collides with unrelated products, making search and patient trust harder
- −Customer support quality and response times are completely unverified in community data
- −Pricing scales by patient volume, which can become expensive fast for large hospitals
- • WhatsApp Business API conversation fees are typically charged separately by Meta and can add hundreds per month at volume
- • EMR integration setup and customization may carry one-time professional services fees not mentioned in public pricing
- • Per-patient-volume scaling means costs grow with hospital success, which can surprise growing clinics
Viability Score
How well maintained and how widely used is Cero? Built from what the vendor actually publishes (docs, changelog, tutorials, integrations, pricing), whether the site is live, and how much real users discuss it. How we calculate this
Last calculated: October 2026
How we score →Key Features
- Automated WhatsApp appointment confirmations and reminders
- Voice call reminders alongside WhatsApp outreach
- Natural-language reply capture that accepts typos and emojis
- No-code workflow builder for multi-step patient journeys
- Multiple appointment confirmations per patient
- Spontaneous cancellation detection and handling
- Automatic rescheduling when a patient cannot attend
- Waiting list management with automatic slot release
- Schedule block and agenda management
- Referral flows between institutions
- Pre-consultation instructions and intake messaging
- Post-consultation satisfaction survey distribution
- Two-way messaging: outbound notifications and inbound patient replies
- Campaign management for mass patient notifications
- Multi-language support (Portuguese and Spanish)
About Cero
Cero is a patient-communication platform built for Latin American healthcare providers. Care teams use it to replace manual phone calls and spreadsheet chasing with automated journeys that message patients over the channels they actually use — WhatsApp first, plus voice calls — for appointment confirmations, 24-hour reminders, pre-consultation instructions, spontaneous cancellation handling, waiting-list offers, automatic rescheduling, schedule blocks and post-visit satisfaction surveys. The product pairs a no-code workflow builder with two-way messaging: Cero sends the outbound confirmation and then reads the patient's reply as it is actually written, including emojis and misspellings ('👍 Cnfirmo' is an accepted confirmation), and can trigger rescheduling, slot release or waiting-list promotion from that reply. It also handles channel behaviour details that matter in the region, such as using 'Dra.' for female doctors in Spanish-language messages, and it connects to the scheduling or CRM system a clinic already runs rather than asking staff to work out of a new calendar. Regional depth is the differentiator. Cero is designed around Latin American realities — high WhatsApp penetration, weaker SMS reliability, local consent and opt-out expectations — and it ships connectors to regional hospital systems including Tasy, MV, Pixeon, Soul MV and InterSystems. On the vendor's own numbers, Cero coordinates more than 1,000,000 appointments per month across 250+ health centres, with teams ranging from about 10 to 10,000+ professionals. It is aimed at clinics, hospitals, telemedicine providers and multi-specialty groups in Brazil, Mexico, Colombia, Chile, Argentina and Peru — organisations with enough appointment volume that no-shows are a measurable revenue line.
Behind the Verdict
Cero's value proposition is narrow and unusually well-executed within that narrowness. The core loop — confirm the appointment, read the patient's natural-language answer, act on it, and refill the slot if they cancel — is exactly where LatAm clinics lose money, and Cero treats it as the product rather than an add-on. Three details stand out from the vendor's own material. First, the reply parsing is genuinely conversational: the homepage example accepts '👍 Cnfirmo' as a confirmation, which matters enormously in WhatsApp-first markets where patients answer in emojis and phonetic spelling. Second, the message copy respects local usage — the example message deliberately uses 'Dra.' for a female doctor, a small thing that signals the team understands the market. Third, Cero integrates rather than replaces: it plugs into the clinic's existing scheduling system or CRM and honours the contactability rules and hours the clinic already runs. The automation set is broader than simple reminders — multiple appointment confirmations, spontaneous cancellation, automatic rescheduling, schedule blocks, waiting lists and referrals are all listed as distinct flows, and the platform supports both outbound notifications and inbound replies. Voice call reminders run alongside WhatsApp, which is sensible for patients who do not use WhatsApp consistently. Where to be careful. Cero is LatAm-only and its strongest EMR connectors are regional, so there is no meaningful use case for a US or EU provider. The commercial model is quoted in tiers that scale with patient volume, so a small clinic should treat it as a serious operational line item rather than a cheap utility. And because the messaging layer rides on WhatsApp's business API, throughput is subject to that provider's rate limits and policy — worth validating against your peak broadcast volume before committing. Our read: strong, focused, regionally deep, and best judged on a measured no-show reduction rather than a feature checklist.
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Real-world workflow fit
Concrete scenarios for the personas Cero actually fits — and what changes day-one when you adopt it.
Connect Cero to the clinic's existing scheduling system, then build a journey that confirms the appointment, reminds the patient the day before, and releases the slot if nobody replies.
Outcome: Front-desk staff stop working through call lists, and cancelled slots get offered to waiting-list patients automatically instead of sitting empty.
Run post-consultation satisfaction surveys over WhatsApp and route the replies into campaign dashboards, while broadcasting preventive-care reminders to segmented patient groups.
Outcome: Feedback arrives continuously without outbound calling, and no-show and response metrics sit in one dashboard instead of in spreadsheets.
Standardise confirmations and pre-consultation instructions across multiple locations, using voice reminders for patients who do not respond on WhatsApp.
Outcome: Every site follows the same patient journey, and referrals and schedule blocks are handled inside one communication layer.
Use Cases
- Confirm appointments over WhatsApp and act on the patient's reply, including answers typed with emojis or misspellings.
- Cut no-shows with reminders sent before the visit and automatic slot release when a patient cancels.
- Fill opened slots automatically from a waiting list instead of calling patients one by one.
- Reschedule patients without a phone queue when they cannot attend their original slot.
- Send pre-consultation instructions so patients arrive prepared for the appointment.
- Collect post-visit satisfaction scores through short WhatsApp surveys.
- Broadcast public health announcements or campaign alerts to segmented patient groups.
- Manage schedule blocks and cross-institution referrals within the same communication layer.
Limitations
- Cero is a Latin American product.
- Its connectors are concentrated on regional hospital systems such as Tasy, MV, Pixeon and InterSystems, and there is no meaningful fit for a US or EU provider.
- Deployment assumes your clinic already runs a scheduling system or CRM that Cero can integrate with; it is not a standalone calendar.
- Messaging throughput depends on the WhatsApp business API, so rate limits and policy changes from that provider apply to your broadcast volume.
- The vendor reports coordinating over 1,000,000 appointments per month, which implies the product is tuned for organisations with real volume rather than very small practices.
as of 2026-09-26
Verification history
We have re-verified Cero 7 times since . Each pass re-reads the vendor's own pages and re-checks every listed field against that evidence; passes where nothing had changed are marked as such.
- — re-verified summary, description, our verdict, our analysis, pricing model, pricing tiers, features, integrations, who it suits, who should skip it
- — re-checked, vendor evidence unchanged
- — re-checked, vendor evidence unchanged
- — re-checked, vendor evidence unchanged
- — re-checked, vendor evidence unchanged
- — re-verified summary, description, our verdict, our analysis, pricing model, pricing tiers, features, integrations, who it suits, who should skip it
Showing the 6 most recent of 7 verification passes.
Free to cite with attribution — this page re-verifies continuously.
12-month cost
Project the real annual outlay, including the implied monthly cost when only an annual tier is published.
Vendor list price only. Add-on usage, seat overages, and contract minimums are surfaced under Hidden costs & gotchas.
Plans compared
For each published Cero tier: who it actually fits, and what it adds vs. the previous tier. Cross-reference the cost calculator above for projected annual outlay.
Starter
$500/mo
Ideal for
Small clinic or single-site practice with real appointment volume that needs WhatsApp confirmations and reminders plus basic no-show reporting.
What this tier adds
Starting tier: automated WhatsApp and voice reminders, the no-code journey builder, basic no-show analytics, EMR integration setup and Portuguese/Spanish support.
Growth
$1,500/mo
Ideal for
Growing clinic or multi-specialty group that has outgrown reminders and now needs campaigns, waiting-list automation and survey collection.
What this tier adds
Adds a higher patient volume allowance, mass-notification campaign management, waiting list management with automatic slot release, and satisfaction survey distribution.
Enterprise
Custom
Ideal for
Hospitals and multi-specialty groups operating at scale, with several EMRs or custom patient journeys and stricter consent requirements.
What this tier adds
Adds volume-based pricing, additional EMR connectors and custom workflows, dedicated onboarding and support, and consent and opt-out management at scale.
Where the pricing makes sense
The company stage and team size where Cero's pricing actually pencils out — and where peers do it cheaper.
Positioned for clinics, hospitals and multi-specialty groups with enough appointment volume that a no-show reduction pays for the platform. That puts it above cheap single-channel reminder tools and below full patient-CRM suites. Solo practices and very low-volume clinics will not get the return; multi-site groups should compare against custom builds on their own EMR's messaging module.
Setup time & first value
How long it actually takes to get something useful out of Cero — broken out by persona, not the marketing-page minute.
Expect days, not minutes — Cero integrates with your existing scheduling system or CRM and adapts to the contactability rules and hours you already run. Clinics with a documented booking flow and an in-house EMR contact can move fastest; multi-site groups should budget longer for consent and workflow alignment.
Switching to or from Cero
How to bring data in from common predecessors and how to get it back out — written for the switcher, not the buyer.
- →From manual phone-call confirmation teams: Cero takes over the outbound confirmation and reminder loop while your staff handle only escalations.
- →From spreadsheet-based waiting lists: import your waitlist into Cero so cancelled slots are offered to patients automatically.
- →From a single-channel SMS reminder tool: layer WhatsApp plus voice reminders on the same patient journeys without changing your booking system.
- ↗To your EMR's native messaging module: possible where your scheduling system already sends confirmations, though you lose the multi-step journey builder and reply parsing.
- ↗To a general patient-CRM suite: viable for organisations that want marketing and CRM in the same tool rather than a focused LatAm patient-communication layer.
Integrations
Resources & Guides
Tutorials & Learning
YouTube returned 6 videos for “Cero”, and we withheld 6: 6 could not be judged, because “Cero” is a single word that other videos use for other things. We are showing none, because we could not prove any of them are about Cero.
Official links
Tools that pair well with Cero
Common stack mates teams adopt alongside Cero, with the specific reason each pairing earns its keep.
Notable
Notable runs healthcare AI agents that automate patient access, revenue cycle, care operations, and contact center work.
Anakin.ai
No-code AI platform bundling text, image, video and voice generation, agents, workflows and batch processing under one credit plan.
Adept
Adept builds AI agents that chain real actions across desktop and web apps, adapting when interfaces change.
Featured Head-to-Head Comparisons
Cero vs Presto Voice
Presto Voice and Cero are not direct competitors as they serve entirely different industries and use cases. Presto Voice is the clear choice for QSR chains looking to automate drive-thru ordering and boost revenue via upselling, with proven results like 95% order automation and 6% revenue lift. Cero is ideal for healthcare providers in Latin America seeking to automate patient communication and reduce no-shows via WhatsApp and voice. Choose based on your industry: drive-thru restaurants go Presto, Latin American healthcare go Cero.
Cero vs Codametrix
These tools serve completely different needs: CodaMetrix is for large US health systems wanting AI-driven coding automation to cut costs and denials, while Cero is a LatAm-focused patient communication platform to reduce no-shows and streamline workflows. Choose CodaMetrix if your priority is coding ROI and your EHR is Epic/Cerner; choose Cero if you're in LatAm and need automated WhatsApp/voice reminders. They are not direct competitors.
Cero vs Isomorphic Labs
Cero and Isomorphic Labs serve entirely different markets. Choose Cero if you're a LatAm healthcare provider seeking to automate patient communications and reduce no-shows with a no-code, integrated platform. Choose Isomorphic Labs if you're a large pharma company looking for a cutting-edge AI partner (backed by AlphaFold and recent $600M investment) to accelerate drug discovery—but be prepared for partnership-only access and significant costs.
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