# NTK SAT Math II vs vocTV

The clearest difference is update cadence: NTK SAT Math II at every 8 days against vocTV's every 6 months. NTK SAT Math II also leads on iOS requirement (8.0 vs 16.0). On price, ads, 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 vocTV sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

NTK SAT Math II ships an update every 8 days, vocTV every 6 months. The most recent releases landed on October 26, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | NTK SAT Math II | vocTV |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 77.8% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 8 days** | Every 6 months |
| Monetization | — | Free with in-app purchases |
| Size | 33 MB | 6 MB |
| Requires iOS | **8.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [NTK Academic Group](https://appshunter.io/developer/635797342) | [Rainer Killinger](https://appshunter.io/developer/854590710) |

## 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 |


### vocTV

[App page](https://appshunter.io/ios/app/voctv/id1519217410)

Stream and browse diverse video content from c3voc with a comfortable, familiar interface. Enjoy features like iCloud sync, multiple audio tracks, closed captions, and offline downloads.

**Highlights:** iCloud synchronization for playback and watchlist, Multiple audio tracks and closed captions, Live stream viewing, Offline video downloads, Easy content browsing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Custom Color | $2.99 | one-time |


## Frequently asked questions

### Is NTK SAT Math II free?

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

### Is vocTV free?

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

### Do NTK SAT Math II or vocTV have ads?

Neither NTK SAT Math II nor vocTV shows ads.

### Which is updated more often, NTK SAT Math II or vocTV?

NTK SAT Math II ships an update every 8 days, and vocTV every 6 months. Most recently, NTK SAT Math II was updated on October 26, 2026 and vocTV on October 25, 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.*