# Timbres vs Boat Sentry

The clearest difference is update cadence: Boat Sentry at every 4 days against Timbres's every 18 months. Timbres's advantage is iOS requirement (11.0 vs 26.2). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Timbres ships an update every 18 months, Boat Sentry every 4 days. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Timbres | Boat Sentry |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 18 months | **Every 4 days** |
| Monetization | Free | — |
| Size | 13 MB | 4 MB |
| Requires iOS | **11.0** | 26.2 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Julien Kermarec](https://appshunter.io/developer/955128067) | [Oscar Robert-Besle](https://appshunter.io/developer/1831517156) |

## What reviewers say

### Timbres

[App page](https://appshunter.io/ios/app/timbres/id1405798438)

Calculate the number of stamps and the price needed for your mail based on destination, letter type, and weight. Get detailed information on different letter types and stamp requirements.

**Highlights:** Destination selection, Letter type selection, Weight-based pricing, Stamp quantity calculation, Letter type information

**Features:** macOS Compatibility

**In-app purchases:** none


### Boat Sentry

[App page](https://appshunter.io/ios/app/boat-sentry/id6761079508)

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

**In-app purchases:** none


## Frequently asked questions

### Is Timbres free?

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

### Is Boat Sentry free?

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

### Do Timbres or Boat Sentry have ads?

Neither Timbres nor Boat Sentry shows ads.

### Which is updated more often, Timbres or Boat Sentry?

Timbres ships an update every 18 months, and Boat Sentry every 4 days. Most recently, Timbres was updated on October 24, 2026 and Boat Sentry 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.*