# One Touch Alert vs Bubble Level

The clearest difference is in-app purchases: One Touch Alert at none against Bubble Level's 5. Bubble Level's advantage is update cadence (every 2 weeks vs every 4 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Bubble Level sells 5 in-app purchases, starting at $3.99 per month. One Touch Alert asks for nothing beyond the download.

One Touch Alert ships an update every 4 months, Bubble Level every 2 weeks. The most recent releases landed on September 28, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | One Touch Alert | Bubble Level |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.9 (11 ratings)](https://appshunter.io/ios/app/bubble-level-angle-and-ruler/id6746100987/reviews)** |
| Number of ratings | — | **11** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 28 MB | 17 MB |
| Requires iOS | 18.0 | **17.6** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Ultron Technologies](https://appshunter.io/developer/1676429183) | [Ungo Inc.](https://appshunter.io/developer/1813952838) |

## What reviewers say

### One Touch Alert

[App page](https://appshunter.io/ios/app/one-touch-alert/id6446170196)

**Features:** Vision Pro support

**In-app purchases:** none


### Bubble Level

[App page](https://appshunter.io/ios/app/bubble-level-angle-and-ruler/id6746100987)

This app provides precise digital measurements for leveling and angle detection, acting as a spirit level, ruler, and laser tool. It helps with various tasks like furniture assembly, hanging decor, and construction projects, offering real-time feedback and the ability to save and share measurements.

**Highlights:** Precise spirit level with 0.1 degree accuracy, Integrated laser measurement tool, Digital ruler for length measurement, Save, note, and export measurements, Customizable themes and settings, Offline functionality

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Bubble Level Premium | $3.99 | per month |
| Weekly Premium | $3.99 | per 7 days |
| Bubble Level Weekly | $4.99 | per 7 days |
| Remove All Ads | $19.99 | per year |
| Bubble Level Lifetime | $39.99 | one-time |


## Frequently asked questions

### Is One Touch Alert free?

One Touch Alert is free to download, with no in-app purchases.

### Is Bubble Level free?

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

### Do One Touch Alert or Bubble Level have ads?

Neither One Touch Alert nor Bubble Level shows ads.

### Which is updated more often, One Touch Alert or Bubble Level?

One Touch Alert ships an update every 4 months, and Bubble Level every 2 weeks. Most recently, One Touch Alert was updated on September 28, 2026 and Bubble Level 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.*