# Flex Log vs SLAB

The clearest difference is in-app purchases: Flex Log at none against SLAB's 2. Flex Log also leads on update cadence (every 5 days vs fortnightly) and iOS requirement (12.4 vs 15.1). On price, ads and device support there is nothing between them.

Both are free to download. SLAB sells 2 in-app purchases, starting at $6.99 per month. Flex Log asks for nothing beyond the download.

Flex Log ships an update every 5 days, SLAB fortnightly. The most recent releases landed on September 15, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | Flex Log | SLAB |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 5 days** | Fortnightly |
| Size | 18 MB | 54 MB |
| Requires iOS | **12.4** | 15.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Aaron Larner](https://appshunter.io/developer/950120608) | [Andrew Lower](https://appshunter.io/developer/1872896802) |

## What reviewers say

### Flex Log

[App page](https://appshunter.io/ios/app/flex-log/id6476252928)

**Features:** macOS Compatibility

**In-app purchases:** none


### SLAB

[App page](https://appshunter.io/ios/app/slab-voice-workout-log/id6758428852)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SLAB Pro - Monthly | $6.99 | per month |
| SLAB Pro - Yearly | $49.99 | per year |


## Frequently asked questions

### Is Flex Log free?

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

### Is SLAB free?

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

### Do Flex Log or SLAB have ads?

Neither Flex Log nor SLAB shows ads.

### Which is updated more often, Flex Log or SLAB?

Flex Log ships an update every 5 days, and SLAB fortnightly. Most recently, Flex Log was updated on September 15, 2026 and SLAB on September 14, 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.*