
Numverify
RealPhoneValidation
Clearout Phone
RealValidito
Lookup by Twilio
NumberBroom
NumValidate
Phone number validation API: line type, carrier and formats for 243 countries. Clean CSV lists and Google Sheets in one upload. 1,000 free lookups a month.

NovoPsych
Clinical assessment tools for psychologists, therapists and occupational therapists. Send measures by secure link and review scored results, severity bands and reports.

Which is more popular?
Based on our record, Veriphone seems to be more popular. It has been mentioned 2 times since March 2021.
Website, pricing, platforms and company facts side by side.
|
|
|
|
|---|---|---|
| Website | veriphone.io | clientforms.app |
| Pricing | ||
| Company | Startup from the United Kingdom · 1 - 9 employees · 2019 | — |
| Listed in |
In their own words, as submitted to SaaSHub.


Veriphone is a phone number validation API for developers and teams that collect phone numbers. One REST call tells you whether a number is valid and returns its country, line type (mobile, landline, VoIP, toll-free), carrier, region, and E.164, international and local formats, for 243 countries....
Clinical assessment tools for psychologists, therapists and occupational therapists. Send measures such as the PHQ-9, GAD-7 and DASS-21 by secure link and get scored results, severity bands and reports ready to review. The catalogue also includes DSM-5 ADHD assessments and autism screening tools....
What each product offers, as listed by its team.


Possible disadvantages
An editorial look at what each product does well and who it suits.


No analysis of Veriphone yet.
Overall verdict
Why this product is good
Recommended for
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing Veriphone and ClientForms.app.
ClientForms.app's answer:
Frontend: Next.js 15 (React 19), Tailwind CSS Backend: Supabase (PostgreSQL, Row-Level Security) Authentication: Clerk Payments: Stripe Hosting: Vercel (Sydney region) Database hosting: Supabase (Australian data residency)
ClientForms.app's answer:
Psychologists who assess ADHD and autism. Typically private practice, solo or small group (1-5 clinicians), currently using paper forms and spending hours on admin per assessment. They want something that works and is secure.
ClientForms.app's answer:
Neurodivergent-first design. Most digital forms just replicate paper online. ClientForms is built specifically for ADHD and autism patients - progress bars with time remaining (helps with time blindness), softer colours instead of harsh white, sticky headers so you always know where you are. The forms are designed to reduce anxiety and improve completion rates.
ClientForms.app's answer:
Most clinical software treats patients as an afterthought. ClientForms is designed specifically for neurodivergent users who are filling out the forms, progress indicators, time estimates, calmer colours, predictable layouts. One link, no signup required, works on any device. Patients just open and complete.
Share your experience with using Veriphone and ClientForms.app. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


Veriphone is a great value for the price. We cleaned up 1000s of phone numbers in minutes + the support is fast and affective.
We have no reviews of ClientForms.app yet. Be the first one to post
Recommendations tracked on public social media and blogs since March 2021.


Https://veriphone.io If I remember correctly if the carrier is not listed it is most likely a VoIP number. Not much you can do on your end. Source: about 5 years ago
Veriphone.io — Global phone number verification in a free, fast, reliable JSON API. 1000 requests/month. - Source: dev.to / over 5 years ago
Tracking ClientForms.app since Dec 2025.
When comparing Veriphone and ClientForms.app, you can also consider the following products.

Global phone number validation and lookup API
Compare Numverify to Veriphone or ClientForms.app:

NovoPsych is a tool that is used for outcome monitoring via conducting psychological tests online.
Compare NovoPsych to Veriphone or ClientForms.app:

Realtime API and Batch Phone Validation
Compare RealPhoneValidation to Veriphone or ClientForms.app:

Phone Number Validation - Accuracy Guaranteed, GDPR Compliant, Abuse Phone Number Checker, Real-Time API 99.999% Uptime - Free Trial With 100 Credits!
Compare Clearout Phone to Veriphone or ClientForms.app:

Phone Validator | Real-time phone validation & carrier lookup API for US & Canada
Compare RealValidito to Veriphone or ClientForms.app:
Know the details behind every phone number
Compare Lookup by Twilio to Veriphone or ClientForms.app: