# OAK POS vs Fill In Studio

The clearest difference is update cadence: Fill In Studio at every 2 weeks against OAK POS's every 6 weeks. On price, rating, ratings volume and ads there is nothing between them.

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

On the App Store both sit at effectively the same score — 5.0 for OAK POS against 5.0 for Fill In Studio. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

OAK POS ships an update every 6 weeks, Fill In Studio every 2 weeks. The most recent releases landed on November 1, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | OAK POS | Fill In Studio |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/oak-pos/id641438373/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/fill-in-studio-class-manager/id6756318343/reviews) |
| Number of ratings | 1 | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 2 weeks** |
| Monetization | Free | Free |
| Size | 71 MB | 61 MB |
| Requires iOS | 15.0 | **14.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Oak, Inc](https://appshunter.io/developer/641438376) | [Fill In LLC](https://appshunter.io/developer/1846910963) |

## What reviewers say

### OAK POS

[App page](https://appshunter.io/ios/app/oak-pos/id641438373)

This multi-channel point-of-sale system helps rental businesses manage in-store and online orders. It offers cloud-based pricing and availability management, supporting multiple locations and users. The system integrates with existing merchant accounts for seamless transactions.

**Highlights:** Multi-channel order taking (in-store & online), Cloud-based pricing and availability management, Supports multiple store locations, Unlimited user accounts, Seamless online order synchronization, Discount and coupon management

**Features:** macOS Compatibility, 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 OAK POS free?

OAK POS 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, OAK POS or Fill In Studio?

OAK POS and Fill In Studio are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do OAK POS or Fill In Studio have ads?

Neither OAK POS nor Fill In Studio shows ads.

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

OAK POS ships an update every 6 weeks, and Fill In Studio every 2 weeks. Most recently, OAK POS was updated on November 1, 2026 and Fill In Studio on October 30, 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.*