# 16 vs Lucidus

The clearest difference is ads: Lucidus at none against 16's shown. Lucidus also leads on update cadence (every 2 weeks vs every 6 weeks). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. 16 sells 5 in-app purchases, starting at $4.99 per 7 days and Lucidus sells 2 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

16 ships an update every 6 weeks, Lucidus every 2 weeks. The most recent releases landed on September 17, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | 16 | Lucidus |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (4 ratings)](https://appshunter.io/ios/app/168-fasting-timer/id6449992745/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 6 weeks | **Every 2 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 54 MB | 31 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Maple Labs Co., Ltd](https://appshunter.io/developer/1320450180) | [Gustavo Silva](https://appshunter.io/developer/1860372546) |

## What reviewers say

### 16

[App page](https://appshunter.io/ios/app/168-fasting-timer/id6449992745)

Track your intermittent fasting journey with customizable plans and real-time analytics. Log meals and water intake, and receive personalized meal tips to support your weight loss goals. Supports various popular fasting methods.

**Highlights:** Intermittent fasting timer, Custom fasting plans, Real-time analytics, Meal and water tracker, Meal tips and recipes, Multiple fasting modes

**Features:** macOS Compatibility

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Premium | $4.99 | per 7 days |
| Monthly Premium | $9.99 | per month |
| Yearly Premium | $12.99 | per year |
| Premium | $12.99 | per 3 months |
| Premium | $24.99 | per 3 months |


### Lucidus

[App page](https://appshunter.io/ios/app/lucidus-routine-planner/id6756521517)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lucidus Premium | $0.99 | per month |
| Lucidus Premium | $3.99 | per year |


## Frequently asked questions

### Is 16 free?

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

### Is Lucidus free?

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

### Do 16 or Lucidus have ads?

16 shows ads; Lucidus does not.

### Which is updated more often, 16 or Lucidus?

16 ships an update every 6 weeks, and Lucidus every 2 weeks. Most recently, 16 was updated on September 17, 2026 and Lucidus on September 15, 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.*