# Countdown Reminder vs PDFW·电子签名

The clearest difference is update cadence: Countdown Reminder at weekly against PDFW·电子签名's every 3 weeks. Countdown Reminder also leads on iOS requirement (12.0 vs 15.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Countdown Reminder sells 2 in-app purchases, starting at $0.99 per month and PDFW·电子签名 sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Countdown Reminder ships an update weekly, PDFW·电子签名 every 3 weeks. The most recent releases landed on October 7, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Countdown Reminder | PDFW·电子签名 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Every 3 weeks |
| Size | 59 MB | 3 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [国飞 闫](https://appshunter.io/developer/1703504926) | [上海寻程网络科技有限公司](https://appshunter.io/developer/1500716476) |

## What reviewers say

### Countdown Reminder

[App page](https://appshunter.io/ios/app/countdown-reminder-key-days/id6754815787)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 month VIP | $0.99 | per month |
| Permanent VIP | $3.99 | one-time |


### PDFW·电子签名

[App page](https://appshunter.io/ios/app/pdfw/id6756837676)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 解锁完整功能 | $29.99 | one-time |


## Frequently asked questions

### Is Countdown Reminder free?

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

### Is PDFW·电子签名 free?

PDFW·电子签名 is free to download, with in-app purchases available.

### Do Countdown Reminder or PDFW·电子签名 have ads?

Neither Countdown Reminder nor PDFW·电子签名 shows ads.

### Which is updated more often, Countdown Reminder or PDFW·电子签名?

Countdown Reminder ships an update weekly, and PDFW·电子签名 every 3 weeks. Most recently, Countdown Reminder was updated on October 7, 2026 and PDFW·电子签名 on October 6, 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.*