# Bubble Level vs 1 Rep Max Calc

The clearest difference is in-app purchases: 1 Rep Max Calc at none against Bubble Level's 11. 1 Rep Max Calc also leads on ads (none vs shown). Bubble Level's advantage is ratings volume (702 vs 11). On price, rating, update cadence and device support there is nothing between them.

Both are free to download. Bubble Level sells 11 in-app purchases, starting at $1.99 per 7 days. 1 Rep Max Calc asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.5 for Bubble Level against 4.5 for 1 Rep Max Calc. That said, the two scores are not equally well evidenced: Bubble Level has 702 ratings behind it against 11, so its average is the more settled of the two.

Bubble Level ships an update weekly, 1 Rep Max Calc every 5 days. The most recent releases landed on October 17, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Bubble Level | 1 Rep Max Calc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (702 ratings)](https://appshunter.io/ios/app/bubble-level-ar-angle-finder/id1594066382/reviews) | [4.5 (11 ratings)](https://appshunter.io/ios/app/1-rep-max-calc/id6449542297/reviews) |
| Number of ratings | **702** | 11 |
| Positive reviews | 41.4% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Weekly | **Every 5 days** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 43 MB | 6 MB |
| Requires iOS | 16.6 | **15.0** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Jens Rieckhof](https://appshunter.io/developer/354266124) | [Will Stankus](https://appshunter.io/developer/1451105607) |

## What reviewers say

### Bubble Level

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

This app transforms your phone into a precise leveling tool. It offers accurate angle measurement, inclination detection, and augmented reality features for DIY and professional use. Calibration is simple and quick.

**Highlights:** Ultra-precise angle measurement, Inclination and slope meter, Augmented reality ruler and protractor, Effortless one-touch calibration, Clear and easy-to-read display, User-friendly interface

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

**In-app purchases (11)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium - Weekly Plan | $1.99 | per 7 days |
| 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


### 1 Rep Max Calc

[App page](https://appshunter.io/ios/app/1-rep-max-calc/id6449542297)

Calculate your one rep max (1RM) and explore potential rep maxes at various intensities. Supports both pounds and kilograms, with an intuitive interface and offline functionality for seamless strength training tracking.

**Highlights:** Accurate one rep max calculation, Comprehensive rep maxes (95%-70%), Seamless unit conversion (lbs/kg), User-friendly interface, Offline support

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

**In-app purchases:** none


## Frequently asked questions

### Is Bubble Level free?

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

### Is 1 Rep Max Calc free?

1 Rep Max Calc is free to download, with no in-app purchases.

### Which has better reviews, Bubble Level or 1 Rep Max Calc?

Bubble Level and 1 Rep Max Calc are both rated 4.5 out of 5 on the App Store, from 702 and 11 ratings respectively.

### Do Bubble Level or 1 Rep Max Calc have ads?

Bubble Level shows ads; 1 Rep Max Calc does not.

### Which is updated more often, Bubble Level or 1 Rep Max Calc?

Bubble Level ships an update weekly, and 1 Rep Max Calc every 5 days. Most recently, Bubble Level was updated on October 17, 2026 and 1 Rep Max Calc on October 3, 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.*