# Big Days vs FederTerziario

The clearest difference is in-app purchases: FederTerziario at none against Big Days's 2. FederTerziario also leads on ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. Big Days sells 2 one-off in-app purchases. FederTerziario asks for nothing beyond the download.

Big Days ships an update every 4 months, FederTerziario every 2 months. The most recent releases landed on October 19, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Big Days | FederTerziario |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (590 ratings)](https://appshunter.io/ios/app/big-days-event-countdown/id940109775/reviews)** | — |
| Number of ratings | **590** | — |
| Positive reviews | 91.4% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 4 months | **Every 2 months** |
| Monetization | Free with in-app purchases | — |
| Size | 81 MB | 65 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [astrovicApps](https://appshunter.io/developer/522189685) | [LPL SOFT](https://appshunter.io/developer/1721911994) |

## What reviewers say

### Big Days

[App page](https://appshunter.io/ios/app/big-days-event-countdown/id940109775)

Easily track important dates with a stylish and lightweight countdown app. Set reminders for appointments, anniversaries, birthdays, and more. Customize with your own photos or find free images online, and receive notifications for upcoming events.

**Highlights:** Countdown to events, Track days elapsed, Customizable event images, Online image search (Pixabay), Event notifications/alarms, Favorite event display, Share events

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Widget Pack | $2.99 | one-time |
| Big Days Pro | $3.99 | one-time |

**What reviewers like**

- 👍 Easy to use
- 🎨 Customizable backgrounds
- 📅 Helpful for tracking events
- 🎉 Exciting countdown feature
- 📷 Option to add images

**What reviewers complain about**

- 🔒 Limited free events
- 💰 Paywall for more features
- 🐛 Occasional crashes or glitches
- 📤 Difficulty transferring data to new devices

**Reported bugs**

- Login screen freezes
- Images disappearing from events
- Constant ads interrupting usage

**Requested features**

- Unlimited free events
- Recurring event option
- Customizable countdown styles
- Ability to reorder events
- Sync across multiple devices


### FederTerziario

[App page](https://appshunter.io/ios/app/federterziario/id1467184544)

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

**In-app purchases:** none


## Frequently asked questions

### Is Big Days free?

Big Days is free to download, with in-app purchases available.

### Is FederTerziario free?

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

### Do Big Days or FederTerziario have ads?

Big Days shows ads; FederTerziario does not.

### Which is updated more often, Big Days or FederTerziario?

Big Days ships an update every 4 months, and FederTerziario every 2 months. Most recently, Big Days was updated on October 19, 2026 and FederTerziario on October 15, 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.*