# Flight Logbook Army vs SDT Calculator 速距時計算機

The clearest difference is in-app purchases: SDT Calculator 速距時計算機 at none against Flight Logbook Army's 2. SDT Calculator 速距時計算機 also leads on update cadence (daily vs every 5 weeks). Flight Logbook Army's advantage is iOS requirement (16.4 vs 18.6). On price, ads and device support there is nothing between them.

Both are free to download. Flight Logbook Army sells 2 in-app purchases, starting at $3.99 per month. SDT Calculator 速距時計算機 asks for nothing beyond the download.

Flight Logbook Army ships an update every 5 weeks, SDT Calculator 速距時計算機 daily. The most recent releases landed on November 3, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Flight Logbook Army | SDT Calculator 速距時計算機 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (27 ratings)](https://appshunter.io/ios/app/flight-logbook-army/id6469672888/reviews)** | — |
| Number of ratings | **27** | — |
| Positive reviews | 90.9% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Daily** |
| Monetization | Paid | — |
| Size | 61 MB | 14 MB |
| Requires iOS | **16.4** | 18.6 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [Front Line Designs LLC](https://appshunter.io/developer/475202403) | [Lap Tak Cheung](https://appshunter.io/developer/557168864) |

## What reviewers say

### Flight Logbook Army

[App page](https://appshunter.io/ios/app/flight-logbook-army/id6469672888)

This app helps Army helicopter pilots easily track flight hours and stay compliant with currency requirements. It offers a digital logbook with cloud storage for data security and personalized insights into flying patterns. The interface is designed for quick input, allowing pilots to focus on flying.

**Highlights:** Hassle-free flight tracking, Stay current and compliant, Personalized insights, Easy-to-use interface, Cloud data storage, One-time payment

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Access | $3.99 | per month |
| Annual Access | $35.99 | per year |


### SDT Calculator 速距時計算機

[App page](https://appshunter.io/ios/app/sdt-calculator/id6767132226)

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

**In-app purchases:** none


## Frequently asked questions

### Is Flight Logbook Army free?

Flight Logbook Army is free to download, with in-app purchases available.

### Is SDT Calculator 速距時計算機 free?

SDT Calculator 速距時計算機 is free to download, with no in-app purchases.

### Do Flight Logbook Army or SDT Calculator 速距時計算機 have ads?

Neither Flight Logbook Army nor SDT Calculator 速距時計算機 shows ads.

### Which is updated more often, Flight Logbook Army or SDT Calculator 速距時計算機?

Flight Logbook Army ships an update every 5 weeks, and SDT Calculator 速距時計算機 daily. Most recently, Flight Logbook Army was updated on November 3, 2026 and SDT Calculator 速距時計算機 on October 24, 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.*