# Mastermind vs Timeusb

The clearest difference is review sentiment: Mastermind at 100% against Timeusb's 0%. Mastermind also leads on rating (4.5 vs 2.3) and update cadence (daily vs every 9 months). On price, ratings volume, ads and in-app purchases there is nothing between them.

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

Mastermind holds the better App Store score, 4.5 against 2.3. Both are backed by a comparable volume of ratings — 6 and 3 respectively. Written reviews point the same way: 100% of Mastermind's written reviews are positive against 0% of Timeusb's.

Mastermind ships an update daily, Timeusb every 9 months. Both last shipped on November 4, 2026.

## The numbers

| Metric | Mastermind | Timeusb |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (6 ratings)](https://appshunter.io/ios/app/mastermind-stoic-joy-and-bliss/id6478835768/reviews)** | [2.3 (3 ratings)](https://appshunter.io/ios/app/timeusb/id6654913724/reviews) |
| Number of ratings | **6** | 3 |
| Positive reviews | **100.0% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Daily** | Every 9 months |
| Monetization | Free | Free |
| Size | 27 MB | 53 MB |
| Requires iOS | 13.4 | **13.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Elvis Baltais](https://appshunter.io/developer/1687362188) | [Timeusb](https://appshunter.io/developer/1764255879) |

## What reviewers say

### Mastermind

[App page](https://appshunter.io/ios/app/mastermind-stoic-joy-and-bliss/id6478835768)

This app offers a sanctuary for mental well-being, providing curated exercises to reduce anxiety, alleviate depression, and conquer insomnia. Explore tailored categories and a comprehensive exercise collection to nurture your mind and reclaim joy.

**Highlights:** Anxiety reduction exercises, Depression alleviation tools, Insomnia relief techniques, Guided meditations, Mindful breathing exercises, Mood-boosting activities, Sleep improvement rituals

**Features:** macOS Compatibility

**In-app purchases:** none


### Timeusb

[App page](https://appshunter.io/ios/app/timeusb/id6654913724)

Monitor your battery's real-time status, including SOC, voltage, current, and temperature. Get estimated charging completion and remaining usage times to manage your power efficiently and support a low-carbon lifestyle.

**Highlights:** Real-time SOC monitoring, Voltage and current tracking, Temperature monitoring, Estimated charging completion, Remaining usage time estimation, Bluetooth connectivity

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Mastermind free?

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

### Is Timeusb free?

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

### Which has better reviews, Mastermind or Timeusb?

Mastermind is rated higher. Mastermind averages 4.5 out of 5 from 6 ratings, while Timeusb averages 2.3 from 3 ratings.

### Do Mastermind or Timeusb have ads?

Neither Mastermind nor Timeusb shows ads.

### Which is updated more often, Mastermind or Timeusb?

Mastermind ships an update daily, and Timeusb every 9 months. Most recently, Mastermind was updated on November 4, 2026 and Timeusb on November 4, 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.*