# Spark vs Complex Fit

The clearest difference is in-app purchases: Complex Fit at none against Spark's 1. Complex Fit also leads on update cadence (every 9 days vs monthly) and iOS requirement (11.0 vs 15.6). Spark's advantage is device support (4 vs 2). On price and ads there is nothing between them.

Both are free to download. Spark sells 1 one-off in-app purchase. Complex Fit asks for nothing beyond the download.

Spark ships an update monthly, Complex Fit every 9 days. The most recent releases landed on October 14, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Spark | Complex Fit |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (3 ratings)](https://appshunter.io/ios/app/spark-calorie-counter/id715165055/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 69.4% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | **Every 9 days** |
| Monetization | Free with in-app purchases | — |
| Size | 38 MB | 63 MB |
| Requires iOS | 15.6 | **11.0** |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Dmitri Marfin](https://appshunter.io/developer/715165058) | [Digital Real Marketing](https://appshunter.io/developer/1641709517) |

## What reviewers say

### Spark

[App page](https://appshunter.io/ios/app/spark-calorie-counter/id715165055)

This offline calorie tracker helps you monitor your daily food intake and body measurements. It features a built-in Russian food database and allows for custom food entries. Sync your progress with Apple Health for a comprehensive overview of your health journey.

**Highlights:** Offline calorie tracking, Built-in Russian food database, Log meals by time, Track body measurements, Add custom foods, Sync with Apple Health

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Awesome calorie counter No Ads | $3.99 | one-time |


### Complex Fit

[App page](https://appshunter.io/ios/app/complex-fit/id1660929120)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Spark free?

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

### Is Complex Fit free?

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

### Do Spark or Complex Fit have ads?

Neither Spark nor Complex Fit shows ads.

### Which is updated more often, Spark or Complex Fit?

Spark ships an update monthly, and Complex Fit every 9 days. Most recently, Spark was updated on October 14, 2026 and Complex Fit on October 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.*