# Repbook Iron plan vs FastOnce

The clearest difference is update cadence: FastOnce at every 5 days against Repbook Iron plan's every 3 months. 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.

Repbook Iron plan ships an update every 3 months, FastOnce every 5 days. The most recent releases landed on September 12, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | Repbook Iron plan | FastOnce |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 5 days** |
| Size | 9 MB | 8 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone, Apple Watch | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Andreas Engebretsen](https://appshunter.io/developer/1189760046) | [Andrii Zakharov](https://appshunter.io/developer/6779217338) |

## What reviewers say

### Repbook Iron plan

[App page](https://appshunter.io/ios/app/repbook-iron-plan/id6773109673)

**Features:** macOS Compatibility, Apple Watch app

**In-app purchases:** none


### FastOnce

[App page](https://appshunter.io/ios/app/fastonce-fasting-timer/id6780015850)

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

**In-app purchases:** none


## Frequently asked questions

### Is Repbook Iron plan free?

Repbook Iron plan is free to download, with no in-app purchases.

### Is FastOnce free?

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

### Do Repbook Iron plan or FastOnce have ads?

Neither Repbook Iron plan nor FastOnce shows ads.

### Which is updated more often, Repbook Iron plan or FastOnce?

Repbook Iron plan ships an update every 3 months, and FastOnce every 5 days. Most recently, Repbook Iron plan was updated on September 12, 2026 and FastOnce on September 28, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*