# PeakID vs Understanding Activity

The clearest difference is update cadence: Understanding Activity at fortnightly against PeakID's every 6 weeks. PeakID's advantage is device support (4 vs 2). On price, ads, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

PeakID ships an update every 6 weeks, Understanding Activity fortnightly. The most recent releases landed on October 24, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | PeakID | Understanding Activity |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/peakid/id1560201273/reviews)** | — |
| Number of ratings | **4** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Fortnightly** |
| Monetization | Free | — |
| Size | 175 MB | 92 MB |
| Requires iOS | **15.5** | 16.0 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [JG Physique Ltd](https://appshunter.io/developer/1560201275) | [Avicenna Research Inc.](https://appshunter.io/developer/1137173051) |

## What reviewers say

### PeakID

[App page](https://appshunter.io/ios/app/peakid/id1560201273)

Track your workouts, meals, and progress towards fitness goals with personalized guidance from your coach. Schedule activities, monitor body measurements, and receive reminders. Connects with wearable devices for seamless data syncing.

**Highlights:** Workout tracking, Meal logging, Progress monitoring, Coach messaging, Body measurement tracking, Wearable device integration, Push notification reminders

**Features:** Apple Wallet, Apple Watch app, Vision Pro support

**In-app purchases:** none


### Understanding Activity

[App page](https://appshunter.io/ios/app/understanding-activity/id6739947978)

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

**In-app purchases:** none


## Frequently asked questions

### Is PeakID free?

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

### Is Understanding Activity free?

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

### Do PeakID or Understanding Activity have ads?

Neither PeakID nor Understanding Activity shows ads.

### Which is updated more often, PeakID or Understanding Activity?

PeakID ships an update every 6 weeks, and Understanding Activity fortnightly. Most recently, PeakID was updated on October 24, 2026 and Understanding Activity on October 31, 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.*