Comparison

Calculator Go Plus vs HaPi

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

Head to head
About

Calculator Go Plus

Features
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Calculator Go – Smart & Always Ready Need a fast and reliable calculator app? Calculator Go allows you to scan match problems and calculations, and it's is designed for everyday math, combining a clean interface with powerful functionality. Whether you’re budgeting, studying, or solving quick equations on the go, this app keeps math simple. Start calculating instantly β€” no setup required. With a minimalist design, Calculator Go focuses on what matters: speed, ease of use, and accuracy. From basic arithmetic to daily problem-solving, this calculator is built for your routine. - Scan any match problem - See your calculation history The built-in history feature helps you keep track of past calculations. Easily revisit or reuse your previous math without starting over. It’s perfect for students, professionals, and anyone who needs math done quickly and efficiently. Features: Fast and simple calculator interface Scan match problems and resolve View and reuse calculation history Lightweight and quick to open Clean design for distraction-free use Ideal for everyday math, budgeting, or schoolwork Whether at home, school, or work β€” Calculator Go is always ready when you need it. Terms of Use: https://blazingappstudio.com/eula/calculator_pro

About

HaPi

Features
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OUR STORY HaPi started with something I have always loved: numbers. I use a calculator all the time, and I have always enjoyed playing with numbers and finding little reasons to make math more fun. One day, I thought: what if a calculator could make people smile too? So I started playing with the idea. A few experiments turned into funny sounds, unexpected reactions, and eventually HaPi. What started as a simple idea to make math a little more fun became something much more entertaining than I expected. Sometimes, even a calculator can have a personality. HOW IT WORKS Pick a theme and start calculating. Every number key shows its own picture, displays its name in your language and plays its own sound. WHAT YOU CAN DO β€’ Add, subtract, multiply, divide and work with percentages β€’ Hear a different sound on every key β€’ See a picture and a name on every number β€’ Watch confetti burst when you press equals β€’ See your full calculation above the result β€’ Switch themes with one tap β€’ Turn sounds on or off at any time β€’ Use HaPi in your own language GREAT FOR Quick daily math, checking a bill, or a little fun with sounds. FREE VERSION β€’ Music and Animals themes β€’ The full calculator with sounds and confetti β€’ No ads of any kind PREMIUM β€’ All Premium themes β€’ Seasonal themes that change through the year β€’ New themes added from time to time Themes are updated from time to time. Some seasonal themes stay for a while and then make room for new ones. You can choose a monthly subscription, a yearly subscription or a one-time Lifetime purchase. This is always your choice. MADE BY AN INDEPENDENT DEVELOPER HaPi is made with care by an independent developer in Δ°zmir, Turkey. WELCOME GIFT Every new user gets 14 days of Premium as a gift. You do not need a card or a subscription. After 14 days, HaPi goes back to the free version automatically. PRIVACY HaPi uses Firebase Analytics and Crashlytics to understand how the app is used and to fix crashes. HaPi does not need an account. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Calculator Go Plus4 screens
HaPi4 screens

Verdict

The call

The clearest difference is in-app purchases: Calculator Go Plus at none against HaPi's 3. HaPi's advantage is ads (none vs shown) and iOS requirement (15.0 vs 17.6). On price, update cadence and device support there is nothing between them.

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

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. HaPi sells 3 in-app purchases, starting at $1.99 per month. Calculator Go Plus asks for nothing beyond the download.

UpkeepUpdate frequency

Calculator Go Plus ships an update every 6 weeks, HaPi monthly. Both last shipped on October 25, 2026.

Scorecard3 real differences Β· 3 level
Calculator Go Plus versus HaPi: the parameters behind the verdict, then further details
ParameterCalculator Go PlusHaPi
PriceFreeFree
Update frequencyEvery 6 weeksMonthly β€” better
AdsYesNo β€” better
In-app purchasesNo β€” betterYes
DevicesiPhone, iPadiPhone, iPad, iPod β€” better
Requires iOS17.615.0 β€” better
Further details β€” not scored
Size34 MB17 MB
Age rating4+4+
DeveloperBlazing App StudioLedaPremium

In-app purchases

None

Calculator Go Plus

No in-app purchases

3 purchases

HaPi

Subscriptions2
  • HaPi Premium Monthly$1.991 Month
  • HaPi Premium Yearly14 Days trial$9.991 Year
One-time1
  • HaPi Premium$19.99

Questions

Is Calculator Go Plus free?
Calculator Go Plus is free to download, with no in-app purchases.
Is HaPi free?
HaPi is free to download, with in-app purchases available.
Do Calculator Go Plus or HaPi have ads?
Calculator Go Plus shows ads; HaPi does not.
Which is updated more often, Calculator Go Plus or HaPi?
Calculator Go Plus ships an update every 6 weeks, and HaPi monthly. Most recently, Calculator Go Plus was updated on October 25, 2026 and HaPi on October 25, 2026.

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