# Nulo vs Call.io

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.

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.

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.

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

## The numbers

| Metric | Nulo | Call.io |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.4 (18 ratings)](https://appshunter.io/ios/app/nulo/id6737268151/reviews) | **[4.0 (17 ratings)](https://appshunter.io/ios/app/callio-ai-phone-assistant/id6754271278/reviews)** |
| Number of ratings | **18** | 17 |
| Positive reviews | 50.0% of reviews | **60.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 2 weeks** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 132 MB | 94 MB |
| Requires iOS | **15.6** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [326 LAB - FZCO](https://appshunter.io/developer/1772075789) | [GETVERIFY LDA](https://appshunter.io/developer/1494178697) |

## What reviewers say

### Nulo

[App page](https://appshunter.io/ios/app/nulo/id6737268151)

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

**In-app purchases (12)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PRO Weekly | $3.99 | per 7 days |
| PRO Weekly | $3.99 | per 7 days |
| PRO Weekly | $4.99 | per 7 days |
| PRO Weekly | $4.99 | per 7 days |
| PRO Weekly | $7.99 | per 7 days |
| PRO Weekly + trial | $7.99 | per 7 days |
| PRO Yearly | $29.99 | per year |
| PRO Yearly | $29.99 | per year |
| PRO Yearly | $39.99 | per year |
| PRO Yearly | $39.99 | per year |
| PRO Yearly | $49.99 | per year |
| PRO Yearly | $49.99 | per year |


### Call.io

[App page](https://appshunter.io/ios/app/callio-ai-phone-assistant/id6754271278)

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:** macOS Compatibility

**In-app purchases (11)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Weekly | $7.99 | per 7 days |
| Premium Monthly | $14.99 | per month |
| 350K Token | $2.99 | one-time |
| 600K Token | $4.99 | one-time |
| 1M Token | $7.99 | one-time |
| 1.7M Token | $12.99 | one-time |
| 2.8M Token | $19.99 | one-time |
| 4.3M Token | $29.99 | one-time |
| 6.7M Token | $44.99 | one-time |
| 9M Token | $59.99 | one-time |
| 13M Token | $79.99 | one-time |


## Frequently asked 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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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*