# Shared pocket book markdown vs Big Day

The clearest difference is in-app purchases: Shared pocket book markdown at none against Big Day's 1. Shared pocket book markdown also leads on iOS requirement (14.0 vs 17.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Big Day sells 1 one-off in-app purchase. Shared pocket book markdown asks for nothing beyond the download.

Shared pocket book markdown ships an update every 8 days, Big Day every 2 weeks. The most recent releases landed on September 30, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Shared pocket book markdown | Big Day |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 8 days** | Every 2 weeks |
| Size | 12 MB | 5 MB |
| Requires iOS | **14.0** | 17.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Takashi Nosaka](https://appshunter.io/developer/627947795) | [Damien Asseya](https://appshunter.io/developer/878472983) |

## What reviewers say

### Shared pocket book markdown

[App page](https://appshunter.io/ios/app/shared-pocket-book-markdown/id6443658507)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 Shared pocket book markdown free?

Shared pocket book markdown is free to download, with no in-app purchases.

### Is Big Day free?

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

### Do Shared pocket book markdown or Big Day have ads?

Neither Shared pocket book markdown nor Big Day shows ads.

### Which is updated more often, Shared pocket book markdown or Big Day?

Shared pocket book markdown ships an update every 8 days, and Big Day every 2 weeks. Most recently, Shared pocket book markdown was updated on September 30, 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.*