# DOY vs TCI Bitacora

The clearest difference is update cadence: TCI Bitacora at fortnightly against DOY's every 4 months. TCI Bitacora also leads on iOS requirement (11.0 vs 15.0). 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.

DOY ships an update every 4 months, TCI Bitacora fortnightly. The most recent releases landed on June 3, 2026 and September 16, 2026 respectively.

## The numbers

| Metric | DOY | TCI Bitacora |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/doy/id1208546429/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Fortnightly** |
| Monetization | Free | — |
| Size | 6 MB | 45 MB |
| Requires iOS | 15.0 | **11.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Daniel Hansen](https://appshunter.io/developer/312733912) | [Armando Montellano](https://appshunter.io/developer/1455567990) |

## What reviewers say

### DOY

[App page](https://appshunter.io/ios/app/doy/id1208546429)

This app helps you track important upcoming events by counting down the days. It also provides the Day Of Year and sunrise/sunset times for each event based on your location.

**Highlights:** Countdown to user-defined events, Displays Day Of Year for events, Provides sunrise and sunset times, Location-based sunrise/sunset data, Inspired by military 'short timer' tapes

**Features:** macOS Compatibility

**In-app purchases:** none


### TCI Bitacora

[App page](https://appshunter.io/ios/app/tci-bitacora/id1464209780)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is DOY free?

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

### Is TCI Bitacora free?

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

### Do DOY or TCI Bitacora have ads?

Neither DOY nor TCI Bitacora shows ads.

### Which is updated more often, DOY or TCI Bitacora?

DOY ships an update every 4 months, and TCI Bitacora fortnightly. Most recently, DOY was updated on June 3, 2026 and TCI Bitacora on September 16, 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.*