# Proofme Validator vs ChatInbox

The clearest difference is in-app purchases: Proofme Validator at none against ChatInbox's 3. Proofme Validator also leads on iOS requirement (13.0 vs 17.0). ChatInbox's advantage is update cadence (every 5 days vs monthly). On price, ads and device support there is nothing between them.

Both are free to download. ChatInbox sells 3 in-app purchases, starting at $4.99 per month. Proofme Validator asks for nothing beyond the download.

Proofme Validator ships an update monthly, ChatInbox every 5 days. The most recent releases landed on October 10, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Proofme Validator | ChatInbox |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.4 (30 ratings)](https://appshunter.io/ios/app/chatinbox-email-by-sender/id6462772788/reviews)** |
| Number of ratings | — | **30** |
| Positive reviews | — | 61.1% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 5 days** |
| Monetization | — | Free with in-app purchases |
| Size | 103 MB | 91 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Didux.io B.V.](https://appshunter.io/developer/1435579499) | [Innovatism LLC](https://appshunter.io/developer/955315491) |

## What reviewers say

### Proofme Validator

[App page](https://appshunter.io/ios/app/proofme-validator/id1627453018)

**Features:** macOS Compatibility

**In-app purchases:** none


### ChatInbox

[App page](https://appshunter.io/ios/app/chatinbox-email-by-sender/id6462772788)

This app reimagines your email by organizing it around people, not dates. View all conversations with a contact in a chat-style format, making it easy to find past messages and attachments. It supports multiple email accounts and devices, offering a streamlined inbox experience.

**Highlights:** Contact-centered inbox, All accounts in one inbox, Smart contact grouping, Attachments by person, Calendar view, Email reminders

**Features:** Family Sharing, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium | $4.99 | per month |
| Yearly Premium | $29.99 | per year |
| Lifetime Premium | $59.99 | one-time |


## Frequently asked questions

### Is Proofme Validator free?

Proofme Validator is free to download, with no in-app purchases.

### Is ChatInbox free?

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

### Do Proofme Validator or ChatInbox have ads?

Neither Proofme Validator nor ChatInbox shows ads.

### Which is updated more often, Proofme Validator or ChatInbox?

Proofme Validator ships an update monthly, and ChatInbox every 5 days. Most recently, Proofme Validator was updated on October 10, 2026 and ChatInbox on October 25, 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.*