# Time Calculator Premium vs Airro Refuel LearJet

The clearest difference is update cadence: Time Calculator Premium at every 6 months against Airro Refuel LearJet's every 28 months. Airro Refuel LearJet's advantage is price ($0.99 vs $3.99) and iOS requirement (12.4 vs 15.6). On ads, in-app purchases and device support there is nothing between them.

Time Calculator Premium costs $3.99 and Airro Refuel LearJet $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Time Calculator Premium ships an update every 6 months, Airro Refuel LearJet every 28 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Time Calculator Premium | Airro Refuel LearJet |
| --- | --- | --- |
| Price | $3.99 | **$0.99** |
| Rating | **[4.6 (10 ratings)](https://appshunter.io/ios/app/time-calculator-premium/id1048440277/reviews)** | — |
| Number of ratings | **10** | — |
| Positive reviews | 68.8% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 months** | Every 28 months |
| Monetization | Paid | — |
| Size | 5 MB | 2 MB |
| Requires iOS | 15.6 | **12.4** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Adrien Brecheteau](https://appshunter.io/developer/956859837) | [Christian van der Meij](https://appshunter.io/developer/571706052) |

## What reviewers say

### Time Calculator Premium

[App page](https://appshunter.io/ios/app/time-calculator-premium/id1048440277)

Easily add and subtract hours and minutes without complex conversions. This app remembers your calculations and allows for large hour amounts, plus decimal conversion. The premium version offers multiplication and division of time values.

**Highlights:** Add and subtract hours/minutes, Decimal time conversion, Save calculations, Multiply/divide time values, Ad-free experience

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

**In-app purchases:** none


### Airro Refuel LearJet

[App page](https://appshunter.io/ios/app/airro-refuel-learjet/id1525444318)

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

**In-app purchases:** none


## Frequently asked questions

### Is Time Calculator Premium free?

Time Calculator Premium costs $3.99, with no in-app purchases.

### Is Airro Refuel LearJet free?

Airro Refuel LearJet costs $0.99, with no in-app purchases.

### Do Time Calculator Premium or Airro Refuel LearJet have ads?

Neither Time Calculator Premium nor Airro Refuel LearJet shows ads.

### Which is updated more often, Time Calculator Premium or Airro Refuel LearJet?

Time Calculator Premium ships an update every 6 months, and Airro Refuel LearJet every 28 months. Most recently, Time Calculator Premium was updated on November 2, 2026 and Airro Refuel LearJet on November 3, 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.*