# Plank Timer by Axcentra vs BMI Calculator

The clearest difference is in-app purchases: Plank Timer by Axcentra at none against BMI Calculator's 4. BMI Calculator's advantage is ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. BMI Calculator sells 4 in-app purchases, starting at $9.99 per month. Plank Timer by Axcentra asks for nothing beyond the download.

Plank Timer by Axcentra ships an update weekly, BMI Calculator every 3 days. The most recent releases landed on November 5, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Plank Timer by Axcentra | BMI Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (25 ratings)](https://appshunter.io/ios/app/plank-timer-by-axcentra/id6744959520/reviews)** | — |
| Number of ratings | **25** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Weekly | **Every 3 days** |
| Monetization | Ad-supported | — |
| Size | 34 MB | 62 MB |
| Requires iOS | 17.4 | **16.4** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 12+ |
| Developer | [Axcentra Fitness](https://appshunter.io/developer/1810163808) | [Resonance Logic, LLC](https://appshunter.io/developer/1763547315) |

## What reviewers say

### Plank Timer by Axcentra

[App page](https://appshunter.io/ios/app/plank-timer-by-axcentra/id6744959520)

This app helps you build core strength with timed plank exercises. It offers custom interval settings, audio cues, and progress tracking for consistent workouts. Suitable for all levels, it requires no equipment and includes various plank types.

**Highlights:** Customizable plank intervals, Audio-guided workout cues, 30-day plank challenge plans, Progress and streak tracking, Multiple plank variations, No equipment required

**Features:** macOS Compatibility

**In-app purchases:** none


### BMI Calculator

[App page](https://appshunter.io/ios/app/bmi-calculator-weight-plan/id6809807863)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weight Plan Pro Monthly | $9.99 | per month |
| Weight Plan Pro Lifetime | $19.99 | one-time |
| Weight Plan Pro Lifetime | $29.99 | one-time |
| Weight Plan Pro Lifetime | $49.99 | one-time |


## Frequently asked questions

### Is Plank Timer by Axcentra free?

Plank Timer by Axcentra is free to download, with no in-app purchases.

### Is BMI Calculator free?

BMI Calculator is free to download, with in-app purchases available.

### Do Plank Timer by Axcentra or BMI Calculator have ads?

Plank Timer by Axcentra shows ads; BMI Calculator does not.

### Which is updated more often, Plank Timer by Axcentra or BMI Calculator?

Plank Timer by Axcentra ships an update weekly, and BMI Calculator every 3 days. Most recently, Plank Timer by Axcentra was updated on November 5, 2026 and BMI Calculator on October 29, 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.*