# AI MATTRESS vs Rep Trace

The clearest difference is in-app purchases: AI MATTRESS at none against Rep Trace's 1. Rep Trace's advantage is update cadence (every 3 days vs weekly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Rep Trace sells 1 in-app purchase, starting at $4.99 per month. AI MATTRESS asks for nothing beyond the download.

AI MATTRESS ships an update weekly, Rep Trace every 3 days. The most recent releases landed on October 27, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | AI MATTRESS | Rep Trace |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/rep-trace-strength-training/id6803135066/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Weekly | **Every 3 days** |
| Monetization | — | Freemium |
| Size | 21 MB | 22 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPod | **iPhone, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [天娥 张](https://appshunter.io/developer/1780495493) | [程远 姜](https://appshunter.io/developer/6798338477) |

## What reviewers say

### AI MATTRESS

[App page](https://appshunter.io/ios/app/ai-mattress/id6738643753)

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

**In-app purchases:** none


### Rep Trace

[App page](https://appshunter.io/ios/app/rep-trace-strength-training/id6803135066)

This app helps you log strength training workouts by remembering exercise details like machine settings and how each session felt. It uses Apple Health data to suggest training intensity and AI to identify gym equipment. Review your progress and adjust your training phases with AI-assisted insights.

**Highlights:** Log exercises, sets, reps, and weight, Save machine settings and training cues, Track training volume and progressive overload, Get training direction from Apple Health data, Scan gym equipment with AI for guidance, Review workout progress and recovery patterns, Train with Apple Watch integration

**Features:** Apple Watch app

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| RepTrace-Plus | $4.99 | per month |


## Frequently asked questions

### Is AI MATTRESS free?

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

### Is Rep Trace free?

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

### Do AI MATTRESS or Rep Trace have ads?

Neither AI MATTRESS nor Rep Trace shows ads.

### Which is updated more often, AI MATTRESS or Rep Trace?

AI MATTRESS ships an update weekly, and Rep Trace every 3 days. Most recently, AI MATTRESS was updated on October 27, 2026 and Rep Trace on October 20, 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.*