# Lumos Sleep vs HIIT Timer

The clearest difference is price: Lumos Sleep at Free against HIIT Timer's $0.99. Lumos Sleep also leads on update cadence (fortnightly vs every 2 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Lumos Sleep is free to download; HIIT Timer costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Lumos Sleep ships an update fortnightly, HIIT Timer every 2 months. The most recent releases landed on October 6, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Lumos Sleep | HIIT Timer |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[2.8 (13 ratings)](https://appshunter.io/ios/app/lumos-sleep/id6446206092/reviews)** | — |
| Number of ratings | **13** | — |
| Positive reviews | 41.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 2 months |
| Monetization | Free | — |
| Size | 76 MB | 2 MB |
| Requires iOS | **16.0** | 17.5 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [LumosTech, Inc.](https://appshunter.io/developer/1292895086) | [Peter Lebedev](https://appshunter.io/developer/1760407520) |

## What reviewers say

### Lumos Sleep

[App page](https://appshunter.io/ios/app/lumos-sleep/id6446206092)

This app helps you combat jet lag, improve sleep during night shifts, and wake up feeling refreshed. It uses patented technology and a proprietary algorithm to regulate your body's natural circadian rhythm, offering tailored programs for various sleep schedules.

**Highlights:** Jet lag and night shift assistance, Circadian rhythm regulation, Tailored sleep programs, Sunrise alarm feature, Light exposure recommendations, Smart Sleep Mask integration

**Features:** macOS Compatibility

**In-app purchases:** none


### HIIT Timer

[App page](https://appshunter.io/ios/app/hiit-timer-interval-flex/id6596603930)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Lumos Sleep free?

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

### Is HIIT Timer free?

HIIT Timer costs $0.99, with no in-app purchases.

### Do Lumos Sleep or HIIT Timer have ads?

Neither Lumos Sleep nor HIIT Timer shows ads.

### Which is updated more often, Lumos Sleep or HIIT Timer?

Lumos Sleep ships an update fortnightly, and HIIT Timer every 2 months. Most recently, Lumos Sleep was updated on October 6, 2026 and HIIT Timer on October 9, 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.*