# My Shift Planner vs Stack Testers Flow Friend

The clearest difference is review sentiment: My Shift Planner at 97% against Stack Testers Flow Friend's 0%. My Shift Planner also leads on update cadence (monthly vs every 8 months). Stack Testers Flow Friend's advantage is in-app purchases (none vs 6) and ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. My Shift Planner sells 6 in-app purchases, starting at $0.99 per month. Stack Testers Flow Friend asks for nothing beyond the download.

My Shift Planner ships an update monthly, Stack Testers Flow Friend every 8 months. The most recent releases landed on November 1, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | My Shift Planner | Stack Testers Flow Friend |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (3.6K ratings)](https://appshunter.io/ios/app/my-shift-planner-calendar/id645662133/reviews)** | — |
| Number of ratings | **3.6K** | — |
| Positive reviews | **97.4% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Monthly** | Every 8 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 173 MB | 32 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [MyBuzz Technologies Limited](https://appshunter.io/developer/645662136) | [Lewis Holmes](https://appshunter.io/developer/1454834389) |

## What reviewers say

### My Shift Planner

[App page](https://appshunter.io/ios/app/my-shift-planner-calendar/id645662133)

This app is a specialized calendar designed for shift workers. It helps organize work schedules, track hours and pay, and sync with other calendars. Users can customize shifts, add notes, and receive reminders to manage their work-life balance effectively.

**Highlights:** Color-coded shift calendar, Customizable shift patterns, Hours and pay tracking, Timesheet submission and download, Sync with device calendar, Reminders and alerts, Multiple shift patterns

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Live Sharing Subscription | $0.99 | per month |
| Pro Pack Add-On (Monthly) | $0.99 | per month |
| Pro Pack Add-On (Annual) | $9.99 | per year |
| Remove Ads | $2.99 | one-time |
| Hard Workers Upgrade to Pro | $24.99 | one-time |
| Pro Pack (Lifetime License) | $49.99 | one-time |

**What reviewers like**

- 👍 Easy to use
- 🚀 Customizable shift patterns
- 💡 Ability to share schedules with family/coworkers
- 👍 Helpful for planning ahead
- 👍 Versatile for different work schedules

**What reviewers complain about**

- 🐛 Occasional bugs or glitches
- 💡 Could use more customization options
- 💡 Wish it had more integration with other calendars

**Reported bugs**

- Login screen issues
- Calendar sync problems
- Unexpected app crashes

**Requested features**

- Add option to set Sunday as first day of week
- Improve visibility of notes/events on calendar view
- Integrate with payroll/overtime tracking
- Add ability to track shift premiums/differentials


### Stack Testers Flow Friend

[App page](https://appshunter.io/ios/app/stack-testers-flow-friend/id1454834655)

This mobile toolkit assists environmental engineers with on-site calculations for stack testing. Quickly determine velocity and volume flow by inputting stack size and gas conditions, eliminating the need for manual calculations or laptops. It also aids in calculating differential pressure cell mA output for data logging.

**Highlights:** Velocity and volume flow calculations, Input stack size and gas conditions, Differential pressure cell mA output calculation, Preloaded Engineers Note Book content, On-site calculation tool

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is My Shift Planner free?

My Shift Planner is free to download, with in-app purchases available.

### Is Stack Testers Flow Friend free?

Stack Testers Flow Friend is free to download, with no in-app purchases.

### Do My Shift Planner or Stack Testers Flow Friend have ads?

My Shift Planner shows ads; Stack Testers Flow Friend does not.

### Which is updated more often, My Shift Planner or Stack Testers Flow Friend?

My Shift Planner ships an update monthly, and Stack Testers Flow Friend every 8 months. Most recently, My Shift Planner was updated on November 1, 2026 and Stack Testers Flow Friend on October 22, 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.*