# Callio vs BIG Reader

The clearest difference is iOS requirement: Callio at 15.0 against BIG Reader's 18.0. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Callio sells 2 in-app purchases, starting at $9.99 per month and BIG Reader sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Callio | BIG Reader |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (18 ratings)](https://appshunter.io/ios/app/callio-ai-phone-concierge/id6756395481/reviews)** | — |
| Number of ratings | **18** | — |
| Positive reviews | 90.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 5 days | — |
| Monetization | Free with in-app purchases | — |
| Size | 95 MB | 8 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Canzhen Zheng](https://appshunter.io/developer/1860446076) | [RICARDO DAVID CURTIS](https://appshunter.io/developer/6788606567) |

## What reviewers say

### Callio

[App page](https://appshunter.io/ios/app/callio-ai-phone-concierge/id6756395481)

This app automates everyday calls to US businesses, handling tasks like reservations, appointment requests, and availability checks. It provides instant summaries and transcripts in your native language, eliminating the need to speak or wait on hold.

**Highlights:** Automated business calls, Reservation and appointment booking, Availability checks, Instant call summaries, Full call transcripts, Supports non-native English speakers, Helps with phone anxiety

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Callio Premium Plan | $9.99 | per month |
| Callio Premium Annual | $49.99 | per year |


### BIG Reader

[App page](https://appshunter.io/ios/app/big-reader/id6789355686)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $4.99 | per month |
| Premium Yearly | $29.99 | per year |


## Frequently asked questions

### Is Callio free?

Callio is free to download, with in-app purchases available.

### Is BIG Reader free?

BIG Reader is free to download, with in-app purchases available.

### Do Callio or BIG Reader have ads?

Neither Callio nor BIG Reader shows ads.

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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.*