# Timeline Calendar vs Aviation Tools

The clearest difference is price: Timeline Calendar at Free against Aviation Tools's $1.99. Timeline Calendar also leads on update cadence (fortnightly vs every 33 months). Aviation Tools's advantage is in-app purchases (none vs 6) and iOS requirement (13.0 vs 15.6). On ads and device support there is nothing between them.

Timeline Calendar is free to download; Aviation Tools costs $1.99 up front. Timeline Calendar sells 6 one-off in-app purchases. Aviation Tools asks for nothing beyond the download.

Timeline Calendar ships an update fortnightly, Aviation Tools every 33 months. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Timeline Calendar | Aviation Tools |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Positive reviews | — | 50.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 33 months |
| Monetization | — | Paid |
| Size | 145 MB | 22 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Nir Tsook](https://appshunter.io/developer/599411476) | [Jorge Gonzalez Galvan](https://appshunter.io/developer/915982572) |

## What reviewers say

### Timeline Calendar

[App page](https://appshunter.io/ios/app/timeline-calendar/id599411473)

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| TL Calendar | $1.99 | one-time |
| Time Line Calendar Upgrade | $2.99 | one-time |
| Support $10 | $9.99 | one-time |
| Support $20 | $19.99 | one-time |
| Support $50 | $49.99 | one-time |
| Support $100 | $99.99 | one-time |


### Aviation Tools

[App page](https://appshunter.io/ios/app/aviation-tools/id1271017562)

This app consolidates essential aviation tools for pilots, including time calculators, unit converters, and extensive databases of Jeppesen and FAA abbreviations, definitions, and NOTAMs. It also features a wind correction calculator for landing performance.

**Highlights:** Time Calculator for logbooks and flight times, Unit Converter for aviation standards, Jeppesen Symbols and Definitions database, Extensive FAA and ICAO Abbreviations, NOTAMs database, Wind Correction Calculator

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Timeline Calendar free?

Timeline Calendar is free to download, with in-app purchases available.

### Is Aviation Tools free?

Aviation Tools costs $1.99, with no in-app purchases.

### Do Timeline Calendar or Aviation Tools have ads?

Neither Timeline Calendar nor Aviation Tools shows ads.

### Which is updated more often, Timeline Calendar or Aviation Tools?

Timeline Calendar ships an update fortnightly, and Aviation Tools every 33 months. Most recently, Timeline Calendar was updated on November 1, 2026 and Aviation Tools 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.*