# Vibration Timer vs Keltron AIR

The clearest difference is ads: Keltron AIR at none against Vibration Timer's shown. Keltron AIR also leads on update cadence (every 3 months vs every 11 months) and iOS requirement (15.0 vs 26.0). On price, in-app purchases and device support there is nothing between them.

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

Vibration Timer ships an update every 11 months, Keltron AIR every 3 months. The most recent releases landed on November 3, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Vibration Timer | Keltron AIR |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (16 ratings)](https://appshunter.io/ios/app/vibration-timer-vibrator-app/id6446075487/reviews)** | — |
| Number of ratings | **16** | — |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 11 months | **Every 3 months** |
| Monetization | Ad-supported | — |
| Size | 10 MB | 10 MB |
| Requires iOS | 26.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [FugaPiyo Inc.](https://appshunter.io/developer/1497887610) | [Keltront IoT Corporation](https://appshunter.io/developer/1786619980) |

## What reviewers say

### Vibration Timer

[App page](https://appshunter.io/ios/app/vibration-timer-vibrator-app/id6446075487)

This utility app provides a silent timer that relies solely on vibration for notifications. It offers unlimited preset timers with customizable labels and colors, and can send strong vibration alerts even when the app is in the background. The interface supports dark mode and displays an icon badge when a timer is active.

**Highlights:** Silent vibration-only notifications, Unlimited preset timers, Customizable timer labels and colors, Background vibration alerts, Icon badge display, Dark mode support

**Features:** Vision Pro support

**In-app purchases:** none


### Keltron AIR

[App page](https://appshunter.io/ios/app/keltron-air/id6739707652)

**In-app purchases:** none


## Frequently asked questions

### Is Vibration Timer free?

Vibration Timer is free to download, with no in-app purchases.

### Is Keltron AIR free?

Keltron AIR is free to download, with no in-app purchases.

### Do Vibration Timer or Keltron AIR have ads?

Vibration Timer shows ads; Keltron AIR does not.

### Which is updated more often, Vibration Timer or Keltron AIR?

Vibration Timer ships an update every 11 months, and Keltron AIR every 3 months. Most recently, Vibration Timer was updated on November 3, 2026 and Keltron AIR on October 1, 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.*