# ISCS vs Boost Bookings

The clearest difference is update cadence: ISCS at every 4 days against Boost Bookings's every 2 months. ISCS also leads on iOS requirement (11.0 vs 13.0). On price, ads, 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.

ISCS ships an update every 4 days, Boost Bookings every 2 months. The most recent releases landed on October 5, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | ISCS | Boost Bookings |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.9 (451 ratings)](https://appshunter.io/ios/app/boost-bookings/id1582304603/reviews)** |
| Number of ratings | — | **451** |
| Positive reviews | — | 63.6% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 2 months |
| Monetization | — | Free |
| Size | 30 MB | 58 MB |
| Requires iOS | **11.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [D80](https://appshunter.io/developer/1046402851) | [Karen Olivarria](https://appshunter.io/developer/1582304605) |

## What reviewers say

### ISCS

[App page](https://appshunter.io/ios/app/iscs/id1249550478)

**Features:** macOS Compatibility

**In-app purchases:** none


### Boost Bookings

[App page](https://appshunter.io/ios/app/boost-bookings/id1582304603)

Easily view your studio's schedule, book classes, and make purchases directly through the app. Access your reservation history, past purchases, and membership details all in one place.

**Highlights:** View studio schedules, Book classes, Purchase services, Track reservation history, Manage membership

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


## Frequently asked questions

### Is ISCS free?

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

### Is Boost Bookings free?

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

### Do ISCS or Boost Bookings have ads?

Neither ISCS nor Boost Bookings shows ads.

### Which is updated more often, ISCS or Boost Bookings?

ISCS ships an update every 4 days, and Boost Bookings every 2 months. Most recently, ISCS was updated on October 5, 2026 and Boost Bookings on October 21, 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.*