# Do3 Coaching vs 16

The clearest difference is review sentiment: 16 at 100% against Do3 Coaching's 0%. 16 also leads on update cadence (every 6 weeks vs every 21 months). Do3 Coaching's advantage is in-app purchases (none vs 6) and ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. 16 sells 5 in-app purchases, starting at $4.99 per 7 days. Do3 Coaching asks for nothing beyond the download.

Do3 Coaching ships an update every 21 months, 16 every 6 weeks. The most recent releases landed on October 2, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Do3 Coaching | 16 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.0 (4 ratings)](https://appshunter.io/ios/app/168-fasting-timer/id6449992745/reviews)** |
| Number of ratings | — | **4** |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 21 months | **Every 6 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 47 MB | 54 MB |
| Requires iOS | **9.0.0** | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [David Knight](https://appshunter.io/developer/1455124904) | [Maple Labs Co., Ltd](https://appshunter.io/developer/1320450180) |

## What reviewers say

### Do3 Coaching

[App page](https://appshunter.io/ios/app/do3-coaching/id1455124905)

Personalized triathlon and swim coaching services are available for athletes of all levels, from beginners to professionals. Whether you're local to the UK or an international athlete, receive tailored guidance to achieve your race goals.

**Highlights:** Triathlon coaching, Swim coaching, Online coaching services, Goal achievement, Athlete development

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is Do3 Coaching free?

Do3 Coaching is free to download, with no in-app purchases.

### Is 16 free?

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

### Do Do3 Coaching or 16 have ads?

16 shows ads; Do3 Coaching does not.

### Which is updated more often, Do3 Coaching or 16?

Do3 Coaching ships an update every 21 months, and 16 every 6 weeks. Most recently, Do3 Coaching was updated on October 2, 2026 and 16 on October 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.*