# Spar Log vs IronZenkai

The clearest difference is in-app purchases: Spar Log at none against IronZenkai's 3. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. IronZenkai sells 3 in-app purchases, starting at $1.99 per month. Spar Log asks for nothing beyond the download.

Spar Log ships an update every 8 days, IronZenkai every 5 days. Both last shipped on October 31, 2026.

## The numbers

| Metric | Spar Log | IronZenkai |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/ironzenkai-workout-tracker/id6773331429/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 8 days | **Every 5 days** |
| Monetization | — | Freemium |
| Size | 68 MB | 166 MB |
| Requires iOS | **15.1** | 15.5 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 4+ | 12+ |
| Developer | [Liam Burton](https://appshunter.io/developer/1867035300) | [Melovin Pedida](https://appshunter.io/developer/1674222169) |

## What reviewers say

### Spar Log

[App page](https://appshunter.io/ios/app/spar-log/id6757500469)

**Features:** macOS Compatibility

**In-app purchases:** none


### IronZenkai

[App page](https://appshunter.io/ios/app/ironzenkai-workout-tracker/id6773331429)

This app provides personalized strength training programs and macro tracking. It features an AI coach for accountability and progress monitoring, helping users achieve their fitness goals with guided workouts and nutrition planning.

**Highlights:** Personalized periodized training programs, Guided workouts with rest timers, Macro and calorie target tracking, AI accountability coach, Progress photo timeline, Home Screen widgets

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| IronZenkai Premium | $1.99 | per month |
| IronZenkai Premium (Yearly) | $19.99 | per year |
| IronZenkai Lifetime | $9.99 | one-time |


## Frequently asked questions

### Is Spar Log free?

Spar Log is free to download, with no in-app purchases.

### Is IronZenkai free?

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

### Do Spar Log or IronZenkai have ads?

Neither Spar Log nor IronZenkai shows ads.

### Which is updated more often, Spar Log or IronZenkai?

Spar Log ships an update every 8 days, and IronZenkai every 5 days. Most recently, Spar Log was updated on October 31, 2026 and IronZenkai on October 31, 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.*