# Plank King vs AirFitty

The clearest difference is in-app purchases: AirFitty at none against Plank King's 3. AirFitty also leads on update cadence (fortnightly vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Plank King sells 3 in-app purchases, starting at $2.99 per month. AirFitty asks for nothing beyond the download.

Plank King ships an update every 2 months, AirFitty fortnightly. The most recent releases landed on September 21, 2026 and June 4, 2026 respectively.

## The numbers

| Metric | Plank King | AirFitty |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/airfitty/id6743443547/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Fortnightly** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 33 MB | 6 MB |
| Requires iOS | **17.0** | 18.2 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [源 陈](https://appshunter.io/developer/1217365131) | [泉 甘](https://appshunter.io/developer/1729496376) |

## What reviewers say

### Plank King

[App page](https://appshunter.io/ios/app/plank-king-abs-workout-log/id1551261027)

This app helps you build a consistent core-training habit with a focused plank timer and progressive 30-day plans. Track your progress, view trends, and stay motivated with streaks and achievements. It's designed for everyday use and habit tracking.

**Highlights:** One-tap plank timer, 30-day progressive plans, Workout history and progress trends, Daily habit reminders, Apple Health sync, Streaks, achievements, and leaderboards

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $2.99 | per month |
| Six-Month Subscription | $14.99 | per 6 months |
| Premium Plus Bundle | $24.99 | per year |


### AirFitty

[App page](https://appshunter.io/ios/app/airfitty/id6743443547)

This app uses AirPods Pro sensors to accurately count your push-ups and syncs your workout data to the Health App. Track your progress with historical data and stay motivated with goal-setting features.

**Highlights:** Accurate push-up counting with AirPods Pro, Syncs data to Apple Health, Workout progress tracking, Goal Mode for challenges, Auto Stop at goal completion, Privacy-focused, no personal data collection

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Plank King free?

Plank King is free to download, with in-app purchases available.

### Is AirFitty free?

AirFitty is free to download, with no in-app purchases.

### Do Plank King or AirFitty have ads?

Neither Plank King nor AirFitty shows ads.

### Which is updated more often, Plank King or AirFitty?

Plank King ships an update every 2 months, and AirFitty fortnightly. Most recently, Plank King was updated on September 21, 2026 and AirFitty on June 4, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*