# UltraTrainer vs Slip Shadowboxing

The clearest difference is price: Slip Shadowboxing at Free against UltraTrainer's $2.99. Slip Shadowboxing also leads on rating (5.0 vs 3.9) and update cadence (every 5 days vs monthly). UltraTrainer's advantage is in-app purchases (none vs 1) and ratings volume (9 vs 2). On ads and device support there is nothing between them.

Slip Shadowboxing is free to download; UltraTrainer costs $2.99 up front. Slip Shadowboxing sells 1 one-off in-app purchase. UltraTrainer asks for nothing beyond the download.

Slip Shadowboxing holds the better App Store score, 5.0 against 3.9. Both are backed by a comparable volume of ratings — 9 and 2 respectively.

UltraTrainer ships an update monthly, Slip Shadowboxing every 5 days. The most recent releases landed on October 29, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | UltraTrainer | Slip Shadowboxing |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | [3.9 (9 ratings)](https://appshunter.io/ios/app/ultratrainer/id343700506/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/slip-shadowboxing/id6504508116/reviews)** |
| Number of ratings | **9** | 2 |
| Positive reviews | 56.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 5 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 21 MB | 65 MB |
| Requires iOS | **8.0** | 13.4 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Plain and Simple Software](https://appshunter.io/developer/286228075) | [Hans Yadav](https://appshunter.io/developer/909818262) |

## What reviewers say

### UltraTrainer

[App page](https://appshunter.io/ios/app/ultratrainer/id343700506)

This app offers a revolutionary interval timer with traditional and randomized action intervals. It acts as a virtual coach, calling out exercises or actions at random times to improve reflexes and reaction speed for various training disciplines.

**Highlights:** Traditional interval timer, Randomized action intervals, Virtual coach functionality, Timer Exchange community, Timer Group sequencing, Direct timer sharing

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

**In-app purchases:** none

**What reviewers like**

- 💡 Highly versatile and customizable
- 👍 Great for various training types
- 🚀 Efficient interval timing
- 💡 Random interval functionality
- 💡 User-recorded sound options

**What reviewers complain about**

- 🐛 Frequent crashes and bugs
- 🐛 Unstable after updates
- 🐛 Issues with saving/editing routines
- 🐛 Orientation problems
- 🐛 Lack of developer support/responsiveness

**Reported bugs**

- Crashes when recording audio
- App closes when trying to add new drills
- Unlabeled buttons in timers (Voiceover issues)
- Bug preventing setting time for actions
- Minute and second parts go to zero

**Requested features**

- Apple Watch support
- Text-to-speech functionality
- Connect to Apple Music
- Fix orientation issues
- Add round numbers at start of each round


### Slip Shadowboxing

[App page](https://appshunter.io/ios/app/slip-shadowboxing/id6504508116)

This app guides you through shadowboxing workouts using audio cues. It directs you to perform specific punches and defensive moves, sometimes indicating which side of your body to use.

**Highlights:** Audio-guided boxing moves, Left/right ear cues for side-specific actions, Simple, minimalist interface, Headphone-based instruction, Variety of boxing techniques

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro | $9.99 | one-time |


## Frequently asked questions

### Is UltraTrainer free?

UltraTrainer costs $2.99, with no in-app purchases.

### Is Slip Shadowboxing free?

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

### Which has better reviews, UltraTrainer or Slip Shadowboxing?

Slip Shadowboxing is rated higher. UltraTrainer averages 3.9 out of 5 from 9 ratings, while Slip Shadowboxing averages 5.0 from 2 ratings.

### Do UltraTrainer or Slip Shadowboxing have ads?

Neither UltraTrainer nor Slip Shadowboxing shows ads.

### Which is updated more often, UltraTrainer or Slip Shadowboxing?

UltraTrainer ships an update monthly, and Slip Shadowboxing every 5 days. Most recently, UltraTrainer was updated on October 29, 2026 and Slip Shadowboxing on October 21, 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.*