# eFlightBook vs Time Passage

The clearest difference is update cadence: eFlightBook at fortnightly against Time Passage's every 5 months. eFlightBook also leads on iOS requirement (14.2 vs 17.0). 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.

eFlightBook ships an update fortnightly, Time Passage every 5 months. The most recent releases landed on September 23, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | eFlightBook | Time Passage |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[1.0 (1 ratings)](https://appshunter.io/ios/app/time-passage/id6479194014/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 5 months |
| Monetization | — | Free |
| Size | 101 MB | 6 MB |
| Requires iOS | **14.2** | 17.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [PH-Informatik](https://appshunter.io/developer/595299933) | [楚江 王](https://appshunter.io/developer/1714265259) |

## What reviewers say

### eFlightBook

[App page](https://appshunter.io/ios/app/eflightbook/id6476969610)

**Features:** macOS Compatibility

**In-app purchases:** none


### Time Passage

[App page](https://appshunter.io/ios/app/time-passage/id6479194014)

Calculate the duration of time elapsed since a specific date. Input a birthday or any past date to see how much time has passed in years, months, days, and even seconds.

**Highlights:** Calculate time elapsed, Input past dates, View duration in years, months, days, View duration in seconds, Birthday calculation

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is eFlightBook free?

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

### Is Time Passage free?

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

### Do eFlightBook or Time Passage have ads?

Neither eFlightBook nor Time Passage shows ads.

### Which is updated more often, eFlightBook or Time Passage?

eFlightBook ships an update fortnightly, and Time Passage every 5 months. Most recently, eFlightBook was updated on September 23, 2026 and Time Passage on October 10, 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.*