# Time Duration Calc vs FlightDev Student Portal

Time Duration Calc and FlightDev Student Portal are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 24, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Time Duration Calc | FlightDev Student Portal |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Size | 42 MB | 31 MB |
| Requires iOS | **15** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [WebbyGenius Infotech Private Limited](https://appshunter.io/developer/1718922727) | [INVICTUS11 IT SOLUTIONS](https://appshunter.io/developer/1657823962) |

## What reviewers say

### Time Duration Calc

[App page](https://appshunter.io/ios/app/time-duration-calc-age-calc/id6748015355)

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

**In-app purchases:** none


### FlightDev Student Portal

[App page](https://appshunter.io/ios/app/flightdev-student-portal/id6756277433)

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

**In-app purchases:** none


## Frequently asked questions

### Is Time Duration Calc free?

Time Duration Calc is free to download, with no in-app purchases.

### Is FlightDev Student Portal free?

FlightDev Student Portal is free to download, with no in-app purchases.

### Do Time Duration Calc or FlightDev Student Portal have ads?

Neither Time Duration Calc nor FlightDev Student Portal shows ads.

### Which is updated more often, Time Duration Calc or FlightDev Student Portal?

Time Duration Calc ships an update every 3 weeks, and FlightDev Student Portal every 3 weeks. Most recently, Time Duration Calc was updated on October 24, 2026 and FlightDev Student Portal on October 30, 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.*