# Trigonometric Time Attack vs BigTanSuo 探搜

The clearest difference is ads: BigTanSuo 探搜 at none against Trigonometric Time Attack's shown. BigTanSuo 探搜 also leads on update cadence (every 2 weeks vs every 2 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Trigonometric Time Attack ships an update every 2 months, BigTanSuo 探搜 every 2 weeks. The most recent releases landed on September 9, 2026 and August 4, 2026 respectively.

## The numbers

| Metric | Trigonometric Time Attack | BigTanSuo 探搜 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Size | 25 MB | 34 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [takamitsu furuya](https://appshunter.io/developer/1599281350) | [HSIAO LI LIU](https://appshunter.io/developer/358939600) |

## What reviewers say

### Trigonometric Time Attack

[App page](https://appshunter.io/ios/app/trigonometric-time-attack/id1599281348)

**Features:** macOS Compatibility

**In-app purchases:** none


### BigTanSuo 探搜

[App page](https://appshunter.io/ios/app/bigtansuo/id6449399226)

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

**In-app purchases:** none


## Frequently asked questions

### Is Trigonometric Time Attack free?

Trigonometric Time Attack is free to download, with no in-app purchases.

### Is BigTanSuo 探搜 free?

BigTanSuo 探搜 is free to download, with no in-app purchases.

### Do Trigonometric Time Attack or BigTanSuo 探搜 have ads?

Trigonometric Time Attack shows ads; BigTanSuo 探搜 does not.

### Which is updated more often, Trigonometric Time Attack or BigTanSuo 探搜?

Trigonometric Time Attack ships an update every 2 months, and BigTanSuo 探搜 every 2 weeks. Most recently, Trigonometric Time Attack was updated on September 9, 2026 and BigTanSuo 探搜 on August 4, 2026.

---

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