# Simple Fit vs Flex3

The clearest difference is ads: Flex3 at none against Simple Fit's shown. Flex3 also leads on iOS requirement (12.0 vs 15.0). On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Simple Fit ships an update every 3 weeks, Flex3 every 5 weeks. The most recent releases landed on September 20, 2026 and May 28, 2026 respectively.

## The numbers

| Metric | Simple Fit | Flex3 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/simple-fit-personal-trainer/id6448774183/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 3 weeks** | Every 5 weeks |
| Monetization | Ad-supported | — |
| Size | 110 MB | 29 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 17+ |
| Developer | [FITNESS I TOCHKA](https://appshunter.io/developer/1686336686) | [Aravind Athreya](https://appshunter.io/developer/1552166670) |

## What reviewers say

### Simple Fit

[App page](https://appshunter.io/ios/app/simple-fit-personal-trainer/id6448774183)

Access qualified trainers and a unique exercise base to create personalized workout plans. Achieve your fitness goals with expert guidance and tailored programs.

**Highlights:** Qualified trainers and Fit-coaches, Unique exercise base, Individual training plans, Goal-oriented coaching, Home and gym workouts

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Flex3

[App page](https://appshunter.io/ios/app/flex3/id6459503860)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Simple Fit free?

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

### Is Flex3 free?

Flex3 is free to download, with no in-app purchases.

### Do Simple Fit or Flex3 have ads?

Simple Fit shows ads; Flex3 does not.

### Which is updated more often, Simple Fit or Flex3?

Simple Fit ships an update every 3 weeks, and Flex3 every 5 weeks. Most recently, Simple Fit was updated on September 20, 2026 and Flex3 on May 28, 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.*