# 陽光BB Call vs 單手學

The clearest difference is in-app purchases: 陽光BB Call at none against 單手學's 3. 單手學's advantage is update cadence (every 4 days vs every 34 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. 單手學 sells 3 one-off in-app purchases. 陽光BB Call asks for nothing beyond the download.

陽光BB Call ships an update every 34 months, 單手學 every 4 days. The most recent releases landed on September 28, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | 陽光BB Call | 單手學 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/ipas-ai/id6756558415/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 34 months | **Every 4 days** |
| Monetization | — | Free with in-app purchases |
| Size | 8 MB | 153 MB |
| Requires iOS | 14.0 | 14.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [HuiLan Kuo](https://appshunter.io/developer/1449675585) | [Seaberry Studio](https://appshunter.io/developer/308519884) |

## What reviewers say

### 陽光BB Call

[App page](https://appshunter.io/ios/app/bb-call/id1525656080)

**Features:** Vision Pro support

**In-app purchases:** none


### 單手學

[App page](https://appshunter.io/ios/app/ipas-ai/id6756558415)

Prepare for the iPAS AI Application Planner certification with this comprehensive study tool. It offers in-depth electronic books and over 4,000 practice questions, designed for efficient one-handed mobile use. Master AI concepts and pass your exam with confidence.

**Highlights:** 8 professional e-books covering AI topics, Over 4,000 practice questions, Simulated exams and past papers, One-handed operation design, Vertical and horizontal screen switching, Covers beginner and intermediate levels

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 初級通行證 | $4.99 | one-time |
| 中級通行證 | $7.99 | one-time |
| 全部通行證 | $9.99 | one-time |


## Frequently asked questions

### Is 陽光BB Call free?

陽光BB Call is free to download, with no in-app purchases.

### Is 單手學 free?

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

### Do 陽光BB Call or 單手學 have ads?

Neither 陽光BB Call nor 單手學 shows ads.

### Which is updated more often, 陽光BB Call or 單手學?

陽光BB Call ships an update every 34 months, and 單手學 every 4 days. Most recently, 陽光BB Call was updated on September 28, 2026 and 單手學 on October 19, 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.*