DOY vs TCI Bitacora
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
DOY
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.
- 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
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They say don't count the days, make the days count. Why not do both? 40 years ago, when I was serving in the U.S. Army Field Artillery, the PX sold tapes with tear-away numbers, allowing 'short timers' to countdown the days as they neared the end of their active duty service. Those tapes are the inspiration for DOY, which tracks the number of days until a user configurable set of events. As a bonus, for each upcoming event, DOY also provides the Day Of Year, and sunrise and sunset times based on your current longitude and latitude.
TCI Bitacora
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INTERFAZ AMIGABLE Esta aplicación permite reportar tus actividades durante el transcurso del día mediante una sencilla e intuitiva interfaz (UI) REPORTE SUS ACTIVIDADES Permite consultar las actividades que diste de alta en la plataforma y estas serán guardadas en tu agenda para posteriormente registrar tus reportes de cada una de ellas, ademas podrás incluir una fotografía en tus reportes. La aplicación esta diseñada para poder realizar reportes sin conexión a Internet, estos se almacenan en el dispositivo de manera temporal y una ves que se cuenta con conexión, se reportan las incidencias.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | DOY | TCI Bitacora |
|---|---|---|
| Price | Free | Free |
| Rating | 3.0 (2 ratings) — better | — |
| Positive reviews | 50.0% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 4 months | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 15.0 | 11.0 — better |
| Further details — not scored | ||
| Size | 6 MB | 45 MB |
| Age rating | 4+ | 4+ |
| Developer | Daniel Hansen | Armando Montellano |
In-app purchases
DOY
No in-app purchases
TCI Bitacora
No in-app purchases
