# TTC Design Tool vs Bubble Level

The clearest difference is price: Bubble Level at Free against TTC Design Tool's $1.99. Bubble Level also leads on review sentiment (43% vs 0%) and update cadence (weekly vs every 27 months). TTC Design Tool's advantage is in-app purchases (none vs 10) and ads (none vs shown). On device support there is nothing between them.

Bubble Level is free to download; TTC Design Tool costs $1.99 up front. Bubble Level sells 10 in-app purchases, starting at $2.99 per month. TTC Design Tool asks for nothing beyond the download.

TTC Design Tool ships an update every 27 months, Bubble Level weekly. The most recent releases landed on November 3, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | TTC Design Tool | Bubble Level |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | — | **[4.5 (721 ratings)](https://appshunter.io/ios/app/bubble-level-angle-finder-ar/id1594066382/reviews)** |
| Number of ratings | — | **721** |
| Positive reviews | 0.0% of reviews | **43.3% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 27 months | **Weekly** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 97 MB | 43 MB |
| Requires iOS | **12.0** | 16.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [The Trail Collective Pty Ltd](https://appshunter.io/developer/1215974926) | [Jens Rieckhof](https://appshunter.io/developer/354266124) |

## What reviewers say

### TTC Design Tool

[App page](https://appshunter.io/ios/app/ttc-design-tool/id1492004467)

This tool facilitates community engagement for trail design projects. It allows users to express ideas and share designs interactively, enhancing preliminary discussions and planning. It's a valuable asset for collaborative project development.

**Highlights:** Community engagement for trail projects, Share and express design ideas, Interactive and enjoyable platform, Enhances preliminary discussions, Facilitates pre-design workshops

**Features:** macOS Compatibility

**In-app purchases:** none


### Bubble Level

[App page](https://appshunter.io/ios/app/bubble-level-angle-finder-ar/id1594066382)

This utility app transforms your device into a precise bubble level and angle finder. It offers augmented reality measurement tools, a user-friendly interface, and Apple Watch integration for live readings. Ideal for DIY enthusiasts and professionals needing accurate surface leveling and inclination measurements.

**Highlights:** Augmented reality ruler and protractor, Precise angle measurements to one tenth of a degree, Effortless one-touch calibration, Clear and easy-to-read visual display, Apple Watch integration for live angle readings, Measures inclination and slope

**Features:** macOS Compatibility, Family Sharing, Apple Watch app, Vision Pro support

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Spirit Level Premium – Monthly | $2.99 | per month |
| Bubble Level Premium - Weekly | $2.99 | per 7 days |
| Bubble Level Premium - Monthly | $5.99 | per month |
| Spirit Level Premium – Annual | $14.99 | per year |
| Bubble Level Premium - Annual | $19.99 | per year |
| All features - No ads | $1.99 | one-time |
| Unlock all AR features | $5.99 | one-time |
| Discount Lifetime Premium | $14.99 | one-time |
| Bubble Level PREMIUM Lifetime | $19.99 | one-time |
| Bubble Level - Lifetime Premium | $29.99 | one-time |

**What reviewers like**

- 👍 Simple and easy to use
- 🔍 Accurate angle measurements
- 🛠️ Helpful for various tasks (telescopes, leveling, etc.)

**What reviewers complain about**

- 🤑 Expensive ad removal
- 🤖 Unreliable calibration
- 💤 Constant interruptions and ads
- 🚫 Unusable due to ads

**Reported bugs**

- App crashes on launch
- Measurement point behaves erratically

**Requested features**

- Ability to calibrate the app
- Option to change the display color


## Frequently asked questions

### Is TTC Design Tool free?

TTC Design Tool costs $1.99, with no in-app purchases.

### Is Bubble Level free?

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

### Do TTC Design Tool or Bubble Level have ads?

Bubble Level shows ads; TTC Design Tool does not.

### Which is updated more often, TTC Design Tool or Bubble Level?

TTC Design Tool ships an update every 27 months, and Bubble Level weekly. Most recently, TTC Design Tool was updated on November 3, 2026 and Bubble Level on November 7, 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.*