# 电子实验记录本 vs Days Counter (Countdown Days)

The clearest difference is in-app purchases: 电子实验记录本 at none against Days Counter (Countdown Days)'s 1. 电子实验记录本 also leads on iOS requirement (9.0 vs 13.0). Days Counter (Countdown Days)'s advantage is device support. On price there is nothing between them.

Both are free to download. Days Counter (Countdown Days) sells 1 one-off in-app purchase. 电子实验记录本 asks for nothing beyond the download.

## The numbers

| Metric | 电子实验记录本 | Days Counter (Countdown Days) |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | — | Yes |
| Update frequency | — | Every 5 weeks |
| Size | 19 MB | 31 MB |
| Requires iOS | **9.0** | 13.0 |
| Devices | — | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [NeoTrident Technology Ltd](https://appshunter.io/developer/940375066) | [庆鸿 林](https://appshunter.io/developer/1558629938) |

## What reviewers say

### 电子实验记录本

[App page](https://appshunter.io/ios/app/id1336794795)

**In-app purchases:** none


### Days Counter (Countdown Days)

[App page](https://appshunter.io/ios/app/days-counter-countdown-days/id1587592197)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Membership | $9.99 | one-time |


## Frequently asked questions

### Is 电子实验记录本 free?

电子实验记录本 is free to download, with no in-app purchases.

### Is Days Counter (Countdown Days) free?

Days Counter (Countdown Days) is free to download, with in-app purchases available.

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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.*