# NTK SAT Math II vs Antique Doll Identifier

The clearest difference is ads: NTK SAT Math II at none against Antique Doll Identifier's shown. NTK SAT Math II also leads on update cadence (every 8 days vs every 6 weeks) and iOS requirement (8.0 vs 14.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. NTK SAT Math II sells 4 one-off in-app purchases and Antique Doll Identifier sells 4 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

NTK SAT Math II ships an update every 8 days, Antique Doll Identifier every 6 weeks. The most recent releases landed on November 2, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | NTK SAT Math II | Antique Doll Identifier |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.6 (35 ratings)](https://appshunter.io/ios/app/antique-doll-identifier/id6738460613/reviews)** |
| Number of ratings | — | **35** |
| Positive reviews | — | 93.2% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 8 days** | Every 6 weeks |
| Monetization | — | Free with in-app purchases |
| Size | 33 MB | 60 MB |
| Requires iOS | **8.0** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [NTK Academic Group](https://appshunter.io/developer/635797342) | [Phuong Thao Vu Thi](https://appshunter.io/developer/1677253137) |

## What reviewers say

### NTK SAT Math II

[App page](https://appshunter.io/ios/app/ntk-sat-math-ii/id1166099614)

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SAT Math Set 2 | $0.99 | one-time |
| SAT Math Set 3 | $0.99 | one-time |
| SAT Math Set 4 | $0.99 | one-time |
| SAT Math Set 5 | $0.99 | one-time |


### Antique Doll Identifier

[App page](https://appshunter.io/ios/app/antique-doll-identifier/id6738460613)

Instantly identify antique and collectible dolls using AI. Simply take a photo to discover a doll's origins, characteristics, historical significance, and even estimated value. Organize your collection and enhance your doll photos with this app.

**Highlights:** Instant doll identification worldwide, Accurate and detailed identification, Doll value estimation, Collection organization, Photo enhancement tools

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Weekly | $4.99 | per 7 days |
| Premium Monthly | $12.99 | per month |
| Flash Sale Yearly | $29.99 | per year |
| Premium Yearly | $39.99 | per year |

**What reviewers like**

- 🚀 Engaging environment
- 👍 Tailored recommendations
- 👥 Great community
- 🔒 Verified profiles
- 🚀 User-friendly design

**What reviewers complain about**

- 🐛 Inaccurate doll identification
- 🔒 No free trial period

**Reported bugs**

- Login screen freezes
- Incompatible with older devices

**Requested features**

- Dark mode option
- Advanced analytics dashboard


## Frequently asked questions

### Is NTK SAT Math II free?

NTK SAT Math II is free to download, with in-app purchases available.

### Is Antique Doll Identifier free?

Antique Doll Identifier is free to download, with in-app purchases available.

### Do NTK SAT Math II or Antique Doll Identifier have ads?

Antique Doll Identifier shows ads; NTK SAT Math II does not.

### Which is updated more often, NTK SAT Math II or Antique Doll Identifier?

NTK SAT Math II ships an update every 8 days, and Antique Doll Identifier every 6 weeks. Most recently, NTK SAT Math II was updated on November 2, 2026 and Antique Doll Identifier on November 4, 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.*