# FlexR (Shift planner) vs IRS Attero

The clearest difference is price: IRS Attero at Free against FlexR (Shift planner)'s $3.99. IRS Attero also leads on in-app purchases (none vs 2). On update cadence, ads, device support and iOS requirement there is nothing between them.

IRS Attero is free to download; FlexR (Shift planner) costs $3.99 up front. FlexR (Shift planner) sells 2 in-app purchases, starting at $3.99 per month. IRS Attero asks for nothing beyond the download.

FlexR (Shift planner) ships an update fortnightly, IRS Attero every 3 weeks. The most recent releases landed on September 25, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | FlexR (Shift planner) | IRS Attero |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/flexr-shift-planner/id924025756/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 59.4% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 3 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 114 MB | 19 MB |
| Requires iOS | 17.6 | **17.0** |
| Devices | **iPhone, iPad, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Gerrit kleyn Winkel](https://appshunter.io/developer/797512757) | [Capptions B.V.](https://appshunter.io/developer/540382734) |

## What reviewers say

### FlexR (Shift planner)

[App page](https://appshunter.io/ios/app/flexr-shift-planner/id924025756)

Manage your work schedule with ease, track worked hours, and calculate your salary. This app offers a clear view of past and future shifts, with options to sync to your external calendar and generate reports.

**Highlights:** Shift scheduling, Work hour tracking, Salary calculation, Calendar sync, Work reports, Invoice creation, Cloud sync

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| FlexR Invoice Subscription | $3.99 | per month |
| FlexR data sharing | $1.99 | one-time |


### IRS Attero

[App page](https://appshunter.io/ios/app/irs-attero/id1456128575)

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

**In-app purchases:** none


## Frequently asked questions

### Is FlexR (Shift planner) free?

FlexR (Shift planner) costs $3.99, and also offers in-app purchases.

### Is IRS Attero free?

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

### Do FlexR (Shift planner) or IRS Attero have ads?

Neither FlexR (Shift planner) nor IRS Attero shows ads.

### Which is updated more often, FlexR (Shift planner) or IRS Attero?

FlexR (Shift planner) ships an update fortnightly, and IRS Attero every 3 weeks. Most recently, FlexR (Shift planner) was updated on September 25, 2026 and IRS Attero on September 17, 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.*