# Simplifythis vs Fill In Studio

The clearest difference is rating: Fill In Studio at 5.0 against Simplifythis's 4.0. Fill In Studio also leads on update cadence (every 2 weeks vs every 3 months) and iOS requirement (14.0 vs 16.4). On price, ratings volume, ads and in-app purchases there is nothing between them.

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

Fill In Studio holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

Simplifythis ships an update every 3 months, Fill In Studio every 2 weeks. The most recent releases landed on October 2, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Simplifythis | Fill In Studio |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (1 ratings)](https://appshunter.io/ios/app/simplifythis/id350853573/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/fill-in-studio-class-manager/id6756318343/reviews)** |
| Number of ratings | 1 | 1 |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 weeks** |
| Monetization | Free | Free |
| Size | 95 MB | 61 MB |
| Requires iOS | 16.4 | **14.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [SimplifyThis](https://appshunter.io/developer/326303874) | [Fill In LLC](https://appshunter.io/developer/1846910963) |

## What reviewers say

### Simplifythis

[App page](https://appshunter.io/ios/app/simplifythis/id350853573)

Manage and invoice clients directly from your mobile device. Track unbilled charges and create invoices instantly after providing services. View client details and manage charges efficiently.

**Highlights:** Client management, Charge tracking, Instant invoicing, On-the-go management, View client details

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

**In-app purchases:** none


### Fill In Studio

[App page](https://appshunter.io/ios/app/fill-in-studio-class-manager/id6756318343)

This app helps fitness studios and gyms fill empty class spots by connecting them with local clients seeking last-minute bookings. Easily post classes, create discounted deals, and manage all your bookings and payments securely.

**Highlights:** Studio dashboard for bookings and revenue, Post classes with details and photos, Create flash deals for last-minute openings, Manage class bookings and attendee lists, Secure Stripe Connect payouts, Instant notifications for new bookings

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

**In-app purchases:** none


## Frequently asked questions

### Is Simplifythis free?

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

### Is Fill In Studio free?

Fill In Studio is free to download, with no in-app purchases.

### Which has better reviews, Simplifythis or Fill In Studio?

Fill In Studio is rated higher. Simplifythis averages 4.0 out of 5 from 1 ratings, while Fill In Studio averages 5.0 from 1 ratings.

### Do Simplifythis or Fill In Studio have ads?

Neither Simplifythis nor Fill In Studio shows ads.

### Which is updated more often, Simplifythis or Fill In Studio?

Simplifythis ships an update every 3 months, and Fill In Studio every 2 weeks. Most recently, Simplifythis was updated on October 2, 2026 and Fill In Studio on October 10, 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.*