# 掌中诀 (AI分析) vs Reckoner Countdown

The clearest difference is update cadence: Reckoner Countdown at fortnightly against 掌中诀 (AI分析)'s every 3 months. 掌中诀 (AI分析)'s advantage is iOS requirement (15.0 vs 17.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. 掌中诀 (AI分析) sells 1 one-off in-app purchase and Reckoner Countdown sells 3 in-app purchases, starting at $1.99 per year. Whichever you choose, the download price is not the number that matters.

掌中诀 (AI分析) ships an update every 3 months, Reckoner Countdown fortnightly. The most recent releases landed on September 18, 2026 and August 18, 2026 respectively.

## The numbers

| Metric | 掌中诀 (AI分析) | Reckoner Countdown |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.0 (2 ratings)](https://appshunter.io/ios/app/reckoner-countdown/id6751704860/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Fortnightly** |
| Monetization | — | Freemium |
| Size | 56 MB | 2 MB |
| Requires iOS | **15.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [CHEUNG PUI MAN](https://appshunter.io/developer/291179028) | [占辉 百](https://appshunter.io/developer/1081455103) |

## What reviewers say

### 掌中诀 (AI分析)

[App page](https://appshunter.io/ios/app/ai/id504270532)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AI大师分析 | $19.99 | one-time |


### Reckoner Countdown

[App page](https://appshunter.io/ios/app/reckoner-countdown/id6751704860)

Easily track important dates like birthdays, anniversaries, and deadlines with customizable reminders and widgets. This app helps you stay organized and never miss a special occasion.

**Highlights:** Countdown and anniversary tracking, Exact-time and all-day reminders, Lunar date support, Home and Lock Screen widgets, Automatic theme and icon matching, History view for expired events, iCloud sync

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Yearly Premium Membership | $1.99 | per year |
| Monthly Premium Membership | $1.99 | per month |
| Lifetime Premium | $3.99 | one-time |


## Frequently asked questions

### Is 掌中诀 (AI分析) free?

掌中诀 (AI分析) is free to download, with in-app purchases available.

### Is Reckoner Countdown free?

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

### Do 掌中诀 (AI分析) or Reckoner Countdown have ads?

Neither 掌中诀 (AI分析) nor Reckoner Countdown shows ads.

### Which is updated more often, 掌中诀 (AI分析) or Reckoner Countdown?

掌中诀 (AI分析) ships an update every 3 months, and Reckoner Countdown fortnightly. Most recently, 掌中诀 (AI分析) was updated on September 18, 2026 and Reckoner Countdown on August 18, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*