# OneTouchVibrationTimer vs SN AquaSmart

The clearest difference is in-app purchases: SN AquaSmart at none against OneTouchVibrationTimer's 1. OneTouchVibrationTimer's advantage is update cadence (every 6 weeks vs every 8 months) and iOS requirement (10.0 vs 13.0). On price, ads and device support there is nothing between them.

Both are free to download. OneTouchVibrationTimer sells 1 in-app purchase, starting at $1.49 per month. SN AquaSmart asks for nothing beyond the download.

OneTouchVibrationTimer ships an update every 6 weeks, SN AquaSmart every 8 months. The most recent releases landed on October 24, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | OneTouchVibrationTimer | SN AquaSmart |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.7 (6 ratings)](https://appshunter.io/ios/app/onetouchvibrationtimer/id1600797388/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 8 months |
| Monetization | Free with in-app purchases | — |
| Size | 77 MB | 202 MB |
| Requires iOS | **10.0** | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [mizukami takamasa](https://appshunter.io/developer/1540548537) | [ZHEJIANG SHENNENG TECHNOLOGY CO., LTD.](https://appshunter.io/developer/1765474023) |

## What reviewers say

### OneTouchVibrationTimer

[App page](https://appshunter.io/ios/app/onetouchvibrationtimer/id1600797388)

This utility app allows you to set interval timers with a single tap, receiving silent vibration notifications when the timer ends. It functions in the background, even when the screen is off or the app is closed, and displays the calculated end time for convenience.

**Highlights:** One-tap timer setting, Vibration notifications, Background operation, Calculated end time display, Customizable time intervals

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| JOIN | $1.49 | per month |


### SN AquaSmart

[App page](https://appshunter.io/ios/app/sn-aquasmart/id6670241015)

**In-app purchases:** none


## Frequently asked questions

### Is OneTouchVibrationTimer free?

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

### Is SN AquaSmart free?

SN AquaSmart is free to download, with no in-app purchases.

### Do OneTouchVibrationTimer or SN AquaSmart have ads?

Neither OneTouchVibrationTimer nor SN AquaSmart shows ads.

### Which is updated more often, OneTouchVibrationTimer or SN AquaSmart?

OneTouchVibrationTimer ships an update every 6 weeks, and SN AquaSmart every 8 months. Most recently, OneTouchVibrationTimer was updated on October 24, 2026 and SN AquaSmart on October 16, 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.*