1Calc vs Math Sphere
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
1Calc
This app offers a streamlined calculator experience with a history feature to review past calculations. It boasts a modern design with customizable themes and ensures a premium user experience by being ad-free for premium users. Enhanced percentage calculation logic provides accurate results.
- History functionality
- Customizable themes
- Ad-free premium experience
- Accurate percentage calculation
- Smart and modern design
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- Very simple but highly efficient - History functionality, view your past calculations - Lots of theme to match your personality - No Ads for premium user experience - Updated business logic for percentage (%) calculation - Percentage Calculation now comply with google web calculator - Smart and modern design style - 1Calc is a pro grade calculator plus lots of functionality. Privacy Policy: https://izen.fun/apps/app_data_privacy_policy.html Terms of Service: https://izen.fun/apps/app_data_terms_of_service.html If you need any help, please contact us asimoxo@outlook.com
Math Sphere
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Math Sphere is a smart, user-friendly calculator app that handles everything from everyday basic math to the complex functions you need for school or work. Its clean, simple design makes it easy for anyone, from students to adults, to use intuitively and makes even the toughest calculations feel approachable.
Screenshots
Verdict
The clearest difference is in-app purchases: Math Sphere at none against 1Calc's 3. Math Sphere also leads on ads (none vs shown) and device support (3 vs 1). On price and update cadence 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
Both are free to download. 1Calc sells 3 in-app purchases, starting at $0.99 per month. Math Sphere asks for nothing beyond the download.
1Calc ships an update fortnightly, Math Sphere every 3 weeks. The most recent releases landed on November 4, 2026 and October 30, 2026 respectively.
| Parameter | 1Calc | Math Sphere |
|---|---|---|
| Price | Free | Free |
| Rating | 2.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Fortnightly — better | Every 3 weeks |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 18.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 6 MB | 25 MB |
| Age rating | 4+ | 4+ |
| Developer | Asim Roy | otsuki hayato |
In-app purchases
1Calc
- Monthly$0.991 Month
- Yearly$3.991 Year
- Lifetime$8.99
Math Sphere
No in-app purchases
