# Calculator 17 vs Plan Flow Meter

The clearest difference is update cadence: Calculator 17 at every 4 days against Plan Flow Meter's every 12 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.

Calculator 17 ships an update every 4 days, Plan Flow Meter every 12 months. The most recent releases landed on October 17, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Calculator 17 | Plan Flow Meter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (971 ratings)](https://appshunter.io/ios/app/calculator-17-math-solver/id6452015902/reviews)** | — |
| Number of ratings | **971** | — |
| Positive reviews | 21.5% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 12 months |
| Monetization | Free | — |
| Size | 5 MB | 15 MB |
| Requires iOS | **16.0** | 17.6 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [AI APPS SRL](https://appshunter.io/developer/1697892814) | [雨杨 陈](https://appshunter.io/developer/1318810771) |

## What reviewers say

### Calculator 17

[App page](https://appshunter.io/ios/app/calculator-17-math-solver/id6452015902)

This app offers a user-friendly calculator with basic and scientific modes. Access calculations instantly via a home screen widget and review past computations in a saved history.

**Highlights:** User-friendly interface, Basic and scientific modes, Home screen widget, LiveActivity Standby for iPhone, Calculation history, Customizable themes

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

**In-app purchases:** none

**What reviewers like**

- 👍 Convenient and easy to use
- 💡 Excellent free app

**What reviewers complain about**

- 🐛 Keyboard not functioning properly
- 🐛 Widget not working or slow
- 🐛 Screen sizing issues
- 🐛 Only works in portrait mode on iPad

**Reported bugs**

- Widget shows up blank
- Numerical display is cut off
- Significant delay between key presses and display update

**Requested features**

- Add landscape mode support
- Improve widget responsiveness
- Increase bracket functionality


### Plan Flow Meter

[App page](https://appshunter.io/ios/app/plan-flow-meter/id6751126870)

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

**In-app purchases:** none


## Frequently asked questions

### Is Calculator 17 free?

Calculator 17 is free to download, with no in-app purchases.

### Is Plan Flow Meter free?

Plan Flow Meter is free to download, with no in-app purchases.

### Do Calculator 17 or Plan Flow Meter have ads?

Neither Calculator 17 nor Plan Flow Meter shows ads.

### Which is updated more often, Calculator 17 or Plan Flow Meter?

Calculator 17 ships an update every 4 days, and Plan Flow Meter every 12 months. Most recently, Calculator 17 was updated on October 17, 2026 and Plan Flow Meter on October 4, 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.*