# Stamp vs Jet Log

The clearest difference is in-app purchases: Stamp at none against Jet Log's 4. Stamp also leads on ads (none vs shown) and iOS requirement (15.1 vs 17.0). Jet Log's advantage is update cadence (every 5 days vs every 3 weeks) and device support (4 vs 2). On price there is nothing between them.

Both are free to download. Jet Log sells 4 in-app purchases, starting at $1.99 per month. Stamp asks for nothing beyond the download.

Stamp ships an update every 3 weeks, Jet Log every 5 days. Both last shipped on November 5, 2026.

## The numbers

| Metric | Stamp | Jet Log |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/stamp-calendar-logger/id6761705643/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 weeks | **Every 5 days** |
| Monetization | Free | — |
| Size | 39 MB | 79 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | iPhone, iPod | **iPhone, iPad, Mac, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Robert Piovesan](https://appshunter.io/developer/1609349291) | [Ryohei Horiuchi](https://appshunter.io/developer/1892078310) |

## What reviewers say

### Stamp

[App page](https://appshunter.io/ios/app/stamp-calendar-logger/id6761705643)

This app automatically logs your non-meeting activities, like reading or exercise, as calendar events. It offers a one-tap timer for manual logging and integrates with Strava and Whoop for seamless workout and sleep tracking. Your calendar will finally reflect your entire day.

**Highlights:** One-tap start/stop timer, Strava integration for workouts, Whoop integration for sleep and recovery, Syncs with Apple, Google, and Outlook Calendar, Customizable activities with names and colors, Live Activity on Lock Screen and Dynamic Island

**Features:** macOS Compatibility

**In-app purchases:** none


### Jet Log

[App page](https://appshunter.io/ios/app/jet-log-widget-pomodoro-timer/id6785190288)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Jet Log Plus Monthly | $1.99 | per month |
| Jet Log Plus Yearly | $9.99 | per year |
| Support the Developer | $1.99 | one-time |
| Lifetime | $29.99 | one-time |


## Frequently asked questions

### Is Stamp free?

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

### Is Jet Log free?

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

### Do Stamp or Jet Log have ads?

Jet Log shows ads; Stamp does not.

### Which is updated more often, Stamp or Jet Log?

Stamp ships an update every 3 weeks, and Jet Log every 5 days. Most recently, Stamp was updated on November 5, 2026 and Jet Log on November 5, 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.*