# IDT Data Logger vs Bubble Level

The clearest difference is rating: Bubble Level at 4.8 against IDT Data Logger's 4.0. Bubble Level also leads on update cadence (every 2 weeks vs every 11 months) and ratings volume (60 vs 1). IDT Data Logger's advantage is in-app purchases (none vs 3) and ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. Bubble Level sells 3 in-app purchases, starting at $1.99 per 7 days. IDT Data Logger asks for nothing beyond the download.

Bubble Level holds the better App Store score, 4.8 against 4.0. That said, the two scores are not equally well evidenced: Bubble Level has 60 ratings behind it against 1, so its average is the more settled of the two.

IDT Data Logger ships an update every 11 months, Bubble Level every 2 weeks. The most recent releases landed on October 11, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | IDT Data Logger | Bubble Level |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (1 ratings)](https://appshunter.io/ios/app/idt-data-logger/id1555614905/reviews) | **[4.8 (60 ratings)](https://appshunter.io/ios/app/bubble-level-spirit-tool/id6470280224/reviews)** |
| Number of ratings | 1 | **60** |
| Positive reviews | — | 75.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 11 months | **Every 2 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 8 MB | 16 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Instruments & Data Tools Pty Ltd](https://appshunter.io/developer/1477164406) | [Andy Sutanto](https://appshunter.io/developer/1659282966) |

## What reviewers say

### IDT Data Logger

[App page](https://appshunter.io/ios/app/idt-data-logger/id1555614905)

Manually record data points using user-defined labels and NFC tags. Capture tag information like number and description alongside your collected data. Share your recorded information across devices via AirDrop.

**Highlights:** Manual data recording, User-defined labels, NFC tag integration, Capture tag number and description, Data sharing via AirDrop

**Features:** macOS Compatibility

**In-app purchases:** none


### Bubble Level

[App page](https://appshunter.io/ios/app/bubble-level-spirit-tool/id6470280224)

This tool helps you ensure surfaces are perfectly horizontal or vertical using various measurement modes. It offers features like angle locking, calibration for accuracy, and an audible indicator for precise leveling.

**Highlights:** Multiple leveling modes (Circle, Vertical, Horizontal, Mix), Lock current angle feature, Calibration for accurate readings, Audible indicator for perfect leveling, User-friendly interface, Angle locking

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Bubble Level Pro | $1.99 | per 7 days |
| Spirit Level Pro | $19.99 | per year |
| Waterpas Pro - Waterpass | $39.99 | one-time |


## Frequently asked questions

### Is IDT Data Logger free?

IDT Data Logger is free to download, with no in-app purchases.

### Is Bubble Level free?

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

### Which has better reviews, IDT Data Logger or Bubble Level?

Bubble Level is rated higher. IDT Data Logger averages 4.0 out of 5 from 1 ratings, while Bubble Level averages 4.8 from 60 ratings.

### Do IDT Data Logger or Bubble Level have ads?

Bubble Level shows ads; IDT Data Logger does not.

### Which is updated more often, IDT Data Logger or Bubble Level?

IDT Data Logger ships an update every 11 months, and Bubble Level every 2 weeks. Most recently, IDT Data Logger was updated on October 11, 2026 and Bubble Level on October 24, 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.*