# Tech Logbook By DCR vs PilotCalc Pro

The clearest difference is in-app purchases: PilotCalc Pro at none against Tech Logbook By DCR's 1. Tech Logbook By DCR's advantage is update cadence (monthly vs every 3 months) and iOS requirement (15.6 vs 18.6). On price, ads and device support there is nothing between them.

Both are free to download. Tech Logbook By DCR sells 1 in-app purchase, starting at $8.99 per year. PilotCalc Pro asks for nothing beyond the download.

Tech Logbook By DCR ships an update monthly, PilotCalc Pro every 3 months. The most recent releases landed on October 12, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Tech Logbook By DCR | PilotCalc Pro |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Monthly** | Every 3 months |
| Size | 20 MB | 18 MB |
| Requires iOS | **15.6** | 18.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [CYRIL DEPECKER](https://appshunter.io/developer/1837250136) | [Vinayak Raghubir Sharma](https://appshunter.io/developer/1884889440) |

## What reviewers say

### Tech Logbook By DCR

[App page](https://appshunter.io/ios/app/tech-logbook-by-dcr/id6752611583)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Yearly | $8.99 | per year |


### PilotCalc Pro

[App page](https://appshunter.io/ios/app/pilotcalc-pro/id6773768107)

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

**In-app purchases:** none


## Frequently asked questions

### Is Tech Logbook By DCR free?

Tech Logbook By DCR is free to download, with in-app purchases available.

### Is PilotCalc Pro free?

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

### Do Tech Logbook By DCR or PilotCalc Pro have ads?

Neither Tech Logbook By DCR nor PilotCalc Pro shows ads.

### Which is updated more often, Tech Logbook By DCR or PilotCalc Pro?

Tech Logbook By DCR ships an update monthly, and PilotCalc Pro every 3 months. Most recently, Tech Logbook By DCR was updated on October 12, 2026 and PilotCalc Pro 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.*