# UnderTension - TUT workout log — Time under tension workout app

> Time under tension workout app (iPhone/iPad app by Samuel Boyd.)

- Source: https://appshunter.io/ios/app/undertension/id1630541580 (this page in markdown: same URL + `.md`)
- Developer: [Samuel Boyd](https://appshunter.io/developer/1616648591)
- Category: Health & Fitness
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 11.0 · 27 MB
- Languages: American English
- Released: 2022-08-02
- Data updated: 2025-01-09
- User reviews in markdown: https://appshunter.io/ios/app/undertension/id1630541580/reviews.md

## What is UnderTension?

UnderTension is your workout partner aiding you in training with a time under tension focus. Time under tension is the term used in strength and conditioning and bodybuilding for how long a muscle is under strain. Broadly speaking, the longer a muscle is under tension the greater it's potential to grow. If you're looking for ways to take your training to the next level then this is it.

UnderTension privacy policy - https://undertension.co.uk/privacy-policy
UnderTension terms of use - https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Monthly | $0.99 | per month |
| Every 3 Months | $2.49 | per 3 months |
| Annually | $10.49 | per year |



## Version history (last 5 releases)

### 1.5 — 2022-08-30

- Added dark & light theme control
- Bug fixes

### 1.4 — 2022-08-21

General performance improvements and error reporting

### 1.3 — 2022-08-16

- Performance improvements and bug fixes

### 1.2 — 2022-08-13

General app improvements and bug fixes

### 1.1 — 2022-08-09

- Try the app for a period (30 workouts) before subscribing
- Exercises are broken down into smaller categories to better represent muscle groups
- Added button to skip rest

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2025-01-09.*