# Interval Timer Sec+Sec vs ストック AI鑑別

The clearest difference is ads: ストック AI鑑別 at none against Interval Timer Sec+Sec's shown. ストック AI鑑別 also leads on update cadence (every 8 days vs every 12 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.

Interval Timer Sec+Sec ships an update every 12 months, ストック AI鑑別 every 8 days. The most recent releases landed on September 24, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Interval Timer Sec+Sec | ストック AI鑑別 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.7 (13 ratings)](https://appshunter.io/ios/app/interval-timer-sec-plus-sec/id595618563/reviews)** | — |
| Number of ratings | **13** | — |
| Positive reviews | 77.8% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 12 months | **Every 8 days** |
| Monetization | Ad-supported | — |
| Size | 12 MB | 21 MB |
| Requires iOS | 13 | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [SHIGETO TAKAGI](https://appshunter.io/developer/519611619) | [Kento Takise](https://appshunter.io/developer/1553271381) |

## What reviewers say

### Interval Timer Sec+Sec

[App page](https://appshunter.io/ios/app/interval-timer-sec-plus-sec/id595618563)

This free interval training timer app uses alarms and vibrations to mark specified second intervals. It automatically tracks repetitions and remembers your settings, making it ideal for High Intensity Interval Training (HIIT). Background operation is limited.

**Highlights:** Second-based interval timing, Alarm and vibration alerts, Repetition counter, Saves interval settings, Suitable for HIIT, Background operation limited

**Features:** Vision Pro support

**In-app purchases:** none


### ストック AI鑑別

[App page](https://appshunter.io/ios/app/ai/id1584814263)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Interval Timer Sec+Sec free?

Interval Timer Sec+Sec is free to download, with no in-app purchases.

### Is ストック AI鑑別 free?

ストック AI鑑別 is free to download, with no in-app purchases.

### Do Interval Timer Sec+Sec or ストック AI鑑別 have ads?

Interval Timer Sec+Sec shows ads; ストック AI鑑別 does not.

### Which is updated more often, Interval Timer Sec+Sec or ストック AI鑑別?

Interval Timer Sec+Sec ships an update every 12 months, and ストック AI鑑別 every 8 days. Most recently, Interval Timer Sec+Sec was updated on September 24, 2026 and ストック AI鑑別 on September 18, 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.*