# Ankle Flex vs HeelRaise

The clearest difference is in-app purchases: Ankle Flex at none against HeelRaise's 1. Ankle Flex also leads on device support (3 vs 1) and iOS requirement (15.6 vs 18.6). HeelRaise's advantage is update cadence (every 2 months vs every 5 months). On price and ads there is nothing between them.

Both are free to download. HeelRaise sells 1 one-off in-app purchase. Ankle Flex asks for nothing beyond the download.

Ankle Flex ships an update every 5 months, HeelRaise every 2 months. The most recent releases landed on October 12, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Ankle Flex | HeelRaise |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/heelraise-calf-training/id6756589093/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 2 months** |
| Monetization | — | Free with in-app purchases |
| Size | 10 MB | 2 MB |
| Requires iOS | **15.6** | 18.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Perry Hooker](https://appshunter.io/developer/1827290197) | [Elvijs Rascevskis](https://appshunter.io/developer/1861593627) |

## What reviewers say

### Ankle Flex

[App page](https://appshunter.io/ios/app/ankle-flex/id6748759970)

**Features:** macOS Compatibility

**In-app purchases:** none


### HeelRaise

[App page](https://appshunter.io/ios/app/heelraise-calf-training/id6756589093)

This app offers a structured 12-week program to build calf strength using guided heel raises. It features voice coaching, visual tempo guides, and smart scheduling for optimal recovery and progress tracking. Unlock the full program with a one-time purchase after a free trial.

**Highlights:** 12-week structured program, Guided tempo training with voice coach, Visual and haptic feedback, Smart scheduling and recovery, Progress tracking and logging, Distraction-free interface

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Program Unlock | $9.99 | one-time |


## Frequently asked questions

### Is Ankle Flex free?

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

### Is HeelRaise free?

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

### Do Ankle Flex or HeelRaise have ads?

Neither Ankle Flex nor HeelRaise shows ads.

### Which is updated more often, Ankle Flex or HeelRaise?

Ankle Flex ships an update every 5 months, and HeelRaise every 2 months. Most recently, Ankle Flex was updated on October 12, 2026 and HeelRaise on October 2, 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.*