# Mail Notes vs Kalpana One

The clearest difference is in-app purchases: Kalpana One at none against Mail Notes's 3. Kalpana One also leads on update cadence (monthly vs every 4 months). Mail Notes's advantage is iOS requirement (16.0 vs 18.0). On price, ads and device support there is nothing between them.

Both are free to download. Mail Notes sells 3 in-app purchases, starting at $2.99 per month. Kalpana One asks for nothing beyond the download.

Mail Notes ships an update every 4 months, Kalpana One monthly. The most recent releases landed on October 22, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | Mail Notes | Kalpana One |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (106 ratings)](https://appshunter.io/ios/app/mail-notes/id1098293355/reviews)** | — |
| Number of ratings | **106** | — |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 months | **Monthly** |
| Monetization | Free with in-app purchases | — |
| Size | 14 MB | 195 MB |
| Requires iOS | **16.0** | 18.0 |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Tech Positive](https://appshunter.io/developer/580207852) | [Pratik Saxena](https://appshunter.io/developer/1793278896) |

## What reviewers say

### Mail Notes

[App page](https://appshunter.io/ios/app/mail-notes/id1098293355)

Quickly send emails to yourself for reminders and notes. This app streamlines the process to under a second, allowing for easy email address switching, direct sharing from browsers, and even sending notes via an Apple Watch app. It offers features like labeling, history, and subject prefixes for efficient organization.

**Highlights:** Email under 1 second, Share widget for browser links, Apple Watch app for on-the-go emails, Label emails with icons, Sent email history, Optional subject prefix, Paste clipboard contents

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| All Access | $2.99 | per month |
| All Access | $29.99 | per year |
| Unlock Pro Version | $69.99 | one-time |


### Kalpana One

[App page](https://appshunter.io/ios/app/kalpana-one/id6741139397)

**In-app purchases:** none


## Frequently asked questions

### Is Mail Notes free?

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

### Is Kalpana One free?

Kalpana One is free to download, with no in-app purchases.

### Do Mail Notes or Kalpana One have ads?

Neither Mail Notes nor Kalpana One shows ads.

### Which is updated more often, Mail Notes or Kalpana One?

Mail Notes ships an update every 4 months, and Kalpana One monthly. Most recently, Mail Notes was updated on October 22, 2026 and Kalpana One on October 18, 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.*