Comparison

Calculator 17 vs Plan Flow Meter

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Calculator 17

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
Read full description

Introducing Calculator 17, the ultimate tool for all your math needs on the go! *** - User-Friendly: Calculator 17 makes math feel easy and quick, perfect for both school tasks and daily math jobs. *** - Various Modes: Whether it's basic addition or advanced calculations, we have you covered. Switch between the simple calculator and Scientific mode easily. *** - Instant Access: No more searching for the app. With our homescreen widget and LiveActivity Standby for iPhone, perform calculations directly on your main screen, all while choosing from a variety of fun themes. *** - Never Forget: Your calculations are always saved in our handy history tab. Want to share or copy them? It's just one tap away. Calculator 17 isn’t just another math app. It’s your trusty helper, ready to handle any math challenge. Whether you're a student in need of a school calculator or someone who loves playing with numbers, our calculator is the perfect fit.

About

Plan Flow Meter

Features
Read full description

Original Purpose: As a developer, I once felt that most planning apps on the App Store were hard to use. They didn’t truly visualize goals and progress, nor did they effectively motivate users. After conducting surveys and research into what people really need, I created this app. The core idea is to make every check-in for your plan feel direct and rewarding, while also giving you great encouragement. I hope you find it both handy and enjoyable to use. Some Quick Tips: First, TOP plan is the most important one. You can set your most urgent plan as a TOP plan. To help you focus better, you can only have one TOP plan at a time. The app also offers a variety of widgets that you can freely combine and place on your home screen for quick access. Some of these widgets even include buttons for direct actions, so you can operate them without opening the app. Everything is designed with your needs in mind, and I believe you’ll make great use of it. You are very welcome to join our Discord group to share any thoughts or feedback you have.

Screenshots

Calculator 174 screens
Plan Flow Meter4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

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.

Scorecard1 real difference · 9 level
Calculator 17 versus Plan Flow Meter: the parameters behind the verdict, then further details
ParameterCalculator 17Plan Flow Meter
PriceFreeFree
Rating4.6 (971 ratings) — better—
Positive reviews21.5% of reviews—
Number of ratings971 — better—
Update frequencyEvery 4 days — betterEvery 12 months
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.0 — better17.6
Further details — not scored
Size5 MB15 MB
Age rating4+4+
DeveloperAI APPS SRL雨杨 陈

Bugs and requests

Calculator 17

Reported bugs

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

Requested features

3 requests
  • Add landscape mode support
  • Improve widget responsiveness
  • Increase bracket functionality

Plan Flow Meter

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Calculator 17

No in-app purchases

None

Plan Flow Meter

No in-app purchases

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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