# Stamp Mail vs OneSentence

The clearest difference is device support: Stamp Mail at 3 against OneSentence's —. Stamp Mail also leads on iOS requirement (15.1 vs 26.0). On price and in-app purchases there is nothing between them.

Both are free to download. Stamp Mail sells 4 in-app purchases, starting at $20.00 per month and OneSentence sells 3 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Stamp Mail | OneSentence |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/stamp-mail/id6748666316/reviews)** | — |
| Number of ratings | **3** | — |
| In-app purchases | Yes | Yes |
| Ads | No | — |
| Update frequency | Weekly | — |
| Monetization | Freemium | — |
| Size | 76 MB | 1 MB |
| Requires iOS | **15.1** | 26.0 |
| Devices | **iPhone, iPad, iPod** | — |
| Age rating | 4+ | 4+ |
| Developer | [Stamp AI](https://appshunter.io/developer/1826931069) | [Austen Allred](https://appshunter.io/developer/1020047784) |

## What reviewers say

### Stamp Mail

[App page](https://appshunter.io/ios/app/stamp-mail/id6748666316)

This AI-powered email client automates tasks like drafting replies, prioritizing messages, and extracting to-dos. It offers an agent to retrieve information and reorganize your inbox using plain English commands. A special mode allows quick review and approval of automated changes.

**Highlights:** Automated email drafting, Email prioritization, To-do extraction, Email summarization, Information retrieval via AI agent, Inbox reorganization, Approve/reject agent changes

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Stamp Individual (Monthly) | $20.00 | per month |
| Stamp Business (Monthly) | $50.00 | per month |
| Stamp Individual (Annual) | $191.99 | per year |
| Stamp Business (Annual) | $479.99 | per year |


### OneSentence

[App page](https://appshunter.io/ios/app/onesentence-explain-text/id6760034490)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Weekly | $4.99 | per 7 days |
| Pro Monthly | $9.99 | per month |
| Pro Annual | $49.99 | per year |


## Frequently asked questions

### Is Stamp Mail free?

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

### Is OneSentence free?

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

---

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