Comparison

Nulo vs Call.io

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

Head to head
About

Nulo

Effortlessly scan, identify, and value your sports cards. This app helps you organize your collection, track your scans, and discover estimated card prices from various marketplaces. Build and manage your digital sports card collection with ease.

Highlights
  • Scan sports cards with AI
  • Identify card details quickly
  • Check estimated card values
  • Save scan history
  • Organize cards into collections
  • Digital collection management
Read full description

Meet Nulo - your all-in-one sports card scanner, value identifier, and collection organizer. Whether you collect baseball, football, hockey, basketball, or other sports cards, Nulo helps you identify cards, check estimated values, and keep your collection organized in one place. Just scan a card to get started. Nulo makes it easy to learn more about your cards, track what you’ve scanned, and build a digital collection you can return to anytime. SCAN SPORTS CARDS WITH EASE Identify sports cards in just a few taps. Nulo helps you quickly check card details without digging through endless listings. CHECK ESTIMATED CARD VALUES See estimated values for your cards and better understand what may be in your collection. View prices pulled from trusted marketplaces. SAVE YOUR SNAP HISTORY Every scan is saved in your Snap History, so you can revisit past cards anytime and keep track of what you’ve already scanned. ORGANIZE CARDS INTO COLLECTIONS Group your cards into collections to keep everything neat, searchable, and easy to manage. BUILT FOR SPORTS CARD COLLECTORS From old finds to new pulls, Nulo helps collectors scan, identify, value, and organize sports cards faster. With Nulo, you can: • Scan sports cards in seconds • Identify baseball, football, hockey, basketball, and more • View estimated card values • Save your Snap History • Organize cards into collections • Build a cleaner digital collection Scan. Value. Organize. Your sports card collection, all in one place. Terms of Use: https://nuloai.com/terms-of-use Privacy Policy: https://nuloai.com/privacy-policy

About

Call.io

This AI-powered assistant screens incoming calls, filters spam, and handles conversations on your behalf. It can take notes, provide call summaries, and even make outbound calls, saving you time and stress from unwanted interruptions.

Highlights
  • Smart call screening and filtering
  • Spam call blocking and "Chatty Aunt" mode
  • Call transcripts and voice summaries
  • Personalized call rules and contact syncing
  • Roaming call handling without extra fees
  • Outbound call capabilities
  • Dedicated global business line
Features
Read full description

Call.io: AI Call Assistant Hand Over Your Phone Control to Your AI Assistant! Are you tired of wasting your day with unnecessary calls, unknown numbers, or persistent telemarketers? Call.io is your 24/7 active AI assistant that answers your phone on your behalf, whether you're in a meeting, driving, or abroad. Let it talk, take notes, and keep spammers busy; you just focus on your life. Key Features: - Smart Screening & Filtering: Your assistant steps in when a number not in your contacts calls. It politely greets the caller and screens for their identity and intent. You’ll know whether it’s a delivery driver or a sales rep before you even pick up. - Spam Hunter & "Chatty Aunt" Mode: Don't just block spam calls—make them regret calling! "Chatty Aunt" mode keeps scammers and telemarketers busy with endless, funny, and meaningless chatter while you enjoy the silence. - Call Transcripts and Voice Summaries: In a meeting? Read your assistant's conversation with the caller, or listen to the voicemail left, at any time. Never miss an important detail. - Personal Memory and Rules: "If my mom calls, connect immediately, if my boss calls, say I'm in a meeting." Your assistant knows you, syncs with your contacts, and acts according to rules you set. - Roaming Savings Abroad: Your assistant continues to answer calls even if your phone is in airplane mode. See who is calling and what they want instantly via the internet, without paying high roaming fees. - Real-World Tasks: Your assistant does more than just handle incoming calls; it can make outbound calls on your behalf and deliver your important announcements or messages to the relevant parties via voice. - Global Business Line & Dedicated Assistant Number: Enhance your professionalism with a global number assigned specifically to your region. Let your assistant provide information about your services, answer questions, and organize customer requests 24/7. How It Works? Our app utilizes the "Conditional Call Forwarding" infrastructure, a standard feature supported by all mobile carriers worldwide. - Download the app. - Activate your carrier-specific forwarding code with a single click. - Let your Call.io assistant step in whenever you are busy or unable to answer! Who is Call.io For? - Professionals dealing with heavy phone traffic throughout the day. - Those who want to eliminate the stress of unknown numbers and spam calls. - Travelers who want to avoid bill shock during trips abroad. - Anyone who values their personal time and privacy. Download now and upgrade your phone with AI! Subscriptions: Access features with paid plans. Payments are charged to your App Store account, prices may vary by country, and subscriptions auto-renew. Manage or cancel anytime via Apple ID > Subscriptions. Support and Information: For any questions or suggestions, you can reach us at support@call.io Help & FAQ: Visit https://callio.faq.desk360.com/ for more information about Call.io. Privacy & Terms of Service: Privacy Policy: https://call.io/privacy-policy Terms of Service: https://call.io/terms-of-service

Screenshots

Nulo4 screens
Call.io4 screens

Verdict

The call

The clearest difference is rating: Call.io at 4.0 against Nulo's 3.4. Call.io also leads on review sentiment (60% vs 50%). Nulo's advantage is device support (3 vs 1). On price, ratings volume, update cadence and ads 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

Both are free to download. Nulo sells 12 in-app purchases, starting at $3.99 per 7 days and Call.io sells 11 in-app purchases, starting at $7.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Call.io holds the better App Store score, 4.0 against 3.4. Both are backed by a comparable volume of ratings — 18 and 17 respectively. Written reviews point the same way: 50% of Nulo's written reviews are positive against 60% of Call.io's.

UpkeepUpdate frequency

Nulo ships an update every 3 weeks, Call.io every 2 weeks. Both last shipped on October 24, 2026.

Scorecard3 real differences · 7 level
Nulo versus Call.io: the parameters behind the verdict, then further details
ParameterNuloCall.io
PriceFreeFree
Rating3.4 (18 ratings)4.0 (17 ratings) — better
Positive reviews50.0% of reviews60.0% of reviews — better
Number of ratings18 — better17
Update frequencyEvery 3 weeksEvery 2 weeks — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.6 — better16.0
Further details — not scored
Size132 MB94 MB
Age rating12+4+
Developer326 LAB - FZCOGETVERIFY LDA

Customer experience

Nulo

All ratings18 ratings
Positive61.1%
Neutral0.0%
Negative38.9%
Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

Call.io

All ratings16 ratings
Positive75.0%
Neutral0.0%
Negative25.0%
Written reviews5 reviews
Positive60.0%
Neutral0.0%
Negative40.0%

In-app purchases

12 purchases

Nulo

Subscriptions12
  • PRO Weekly$3.997 Days
  • PRO Weekly3 Days trial$3.997 Days
  • PRO Weekly$4.997 Days
Show 9 more
  • PRO Weekly3 Days trial$4.997 Days
  • PRO Weekly$7.997 Days
  • PRO Weekly + trial3 Days trial$7.997 Days
  • PRO Yearly$29.991 Year
  • PRO Yearly1 Year trial$29.991 Year
  • PRO Yearly2 variants$39.991 Year
  • PRO Yearly1 Year trial2 variants$39.991 Year
  • PRO Yearly1 Year trial$49.991 Year
  • PRO Yearly$49.991 Year
11 purchases

Call.io

Subscriptions2
  • Premium Weekly7 Days trial$7.997 Days
  • Premium Monthly1 Month trial$14.991 Month
One-time9
  • 350K Token$2.99
  • 600K Token$4.99
  • 1M Token$7.99
Show 6 more
  • 1.7M Token$12.99
  • 2.8M Token$19.99
  • 4.3M Token$29.99
  • 6.7M Token$44.99
  • 9M Token$59.99
  • 13M Token$79.99

Questions

Is Nulo free?
Nulo is free to download, with in-app purchases available.
Is Call.io free?
Call.io is free to download, with in-app purchases available.
Which has better reviews, Nulo or Call.io?
Call.io is rated higher. Nulo averages 3.4 out of 5 from 18 ratings, while Call.io averages 4.0 from 17 ratings.
Do Nulo or Call.io have ads?
Neither Nulo nor Call.io shows ads.
Which is updated more often, Nulo or Call.io?
Nulo ships an update every 3 weeks, and Call.io every 2 weeks. Most recently, Nulo was updated on October 24, 2026 and Call.io on October 24, 2026.

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