# MarkDays vs Big Day

The clearest difference is update cadence: Big Day at every 2 weeks against MarkDays's every 70 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. MarkDays sells 1 one-off in-app purchase and Big Day sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

MarkDays ships an update every 70 months, Big Day every 2 weeks. The most recent releases landed on October 13, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | MarkDays | Big Day |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/markdays-count-to-days/id1490546689/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 70 months | **Every 2 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 8 MB | 5 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | **iPhone, iPad, Mac, Apple Watch** | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [昊罡 姚](https://appshunter.io/developer/844772956) | [Damien Asseya](https://appshunter.io/developer/878472983) |

## What reviewers say

### MarkDays

[App page](https://appshunter.io/ios/app/markdays-count-to-days/id1490546689)

This tool helps you remember and count down to significant life events like anniversaries, birthdays, and important schedules. Receive timely reminders so you never miss a special occasion. Track both past and future important dates.

**Highlights:** Mark important life days, Count down to events, Track past events, Timely reminders, Anniversary tracking, Birthday reminders

**Features:** Apple Watch app, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock MarkedDays Professional | $4.99 | one-time |


### Big Day

[App page](https://appshunter.io/ios/app/big-day-countdown-timer/id6799796713)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Countdown Pro | $5.99 | one-time |


## Frequently asked questions

### Is MarkDays free?

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

### Is Big Day free?

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

### Do MarkDays or Big Day have ads?

Neither MarkDays nor Big Day shows ads.

### Which is updated more often, MarkDays or Big Day?

MarkDays ships an update every 70 months, and Big Day every 2 weeks. Most recently, MarkDays was updated on October 13, 2026 and Big Day on October 12, 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.*