# Sky Horizon Spark vs Fasting Tracker by Numify

The clearest difference is in-app purchases: Sky Horizon Spark at none against Fasting Tracker by Numify's 10. Sky Horizon Spark also leads on iOS requirement (11.0 vs 17.5). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Fasting Tracker by Numify sells 9 in-app purchases, starting at $3.99 per 7 days. Sky Horizon Spark asks for nothing beyond the download.

Sky Horizon Spark ships an update every 2 months, Fasting Tracker by Numify monthly. The most recent releases landed on October 30, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | Sky Horizon Spark | Fasting Tracker by Numify |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.7 (5.9K ratings)](https://appshunter.io/ios/app/fasting-tracker-by-numify/id6470460463/reviews)** |
| Number of ratings | — | **5.9K** |
| Positive reviews | — | 60.7% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Monthly** |
| Monetization | — | Free with in-app purchases |
| Size | 51 MB | 159 MB |
| Requires iOS | **11.0** | 17.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [Sky Software](https://appshunter.io/developer/1461696206) | [Municorn Limited](https://appshunter.io/developer/380984285) |

## What reviewers say

### Sky Horizon Spark

[App page](https://appshunter.io/ios/app/sky-horizon-spark/id6453478244)

**Features:** macOS Compatibility

**In-app purchases:** none


### Fasting Tracker by Numify

[App page](https://appshunter.io/ios/app/fasting-tracker-by-numify/id6470460463)

This app guides users through intermittent fasting for weight loss and improved health. It offers simple tracking, personalized plans, and smart notifications to help establish healthy habits without restrictive diets.

**Highlights:** Intermittent fasting guidance, Weight loss without restrictive diets, OMAD and 16/8 timer options, Effortless tracking, Smart notifications, Personalized fasting plans

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Fasting Plus | $3.99 | per 7 days |
| Fasting Plus | $3.99 | per 7 days |
| Fasting Plus | $4.99 | per 7 days |
| Premium features | $5.99 | per 7 days |
| Fasting Plus | $5.99 | per 7 days |
| Lose Weight with a Fasting App | $5.99 | per 7 days |
| Plus | $9.99 | per 7 days |
| Fasting Plus | $19.99 | per 3 months |
| Fasting Plus | $49.99 | per year |

**What reviewers like**

- 🚀 Easy to use
- 👍 Helpful for beginners
- 💡 Customizable fasting schedules
- 🚀 Convenient and portable
- 👍 Effective for weight loss and health

**What reviewers complain about**

- 🔒 Paywall for basic features
- 🐛 Bugs and glitches
- 🔒 Deceptive free trial
- 🐛 Unreliable data tracking
- 🔒 Expensive subscription

**Reported bugs**

- Incorrect date and time display
- Inability to edit personal information
- Inconsistent data saving and syncing
- Frequent crashes and app not opening

**Requested features**

- Add 18:6 fasting option
- Include meal logging and nutrition tracking
- Provide more fasting protocols and customization
- Improve notifications and reminders


## Frequently asked questions

### Is Sky Horizon Spark free?

Sky Horizon Spark is free to download, with no in-app purchases.

### Is Fasting Tracker by Numify free?

Fasting Tracker by Numify is free to download, with in-app purchases available.

### Do Sky Horizon Spark or Fasting Tracker by Numify have ads?

Neither Sky Horizon Spark nor Fasting Tracker by Numify shows ads.

### Which is updated more often, Sky Horizon Spark or Fasting Tracker by Numify?

Sky Horizon Spark ships an update every 2 months, and Fasting Tracker by Numify monthly. Most recently, Sky Horizon Spark was updated on October 30, 2026 and Fasting Tracker by Numify on November 7, 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.*