Check the acquisition promise
Read the store headline, screenshots and description. What problem is the app promising to solve?
Study the storefront ↗02 / Storefront & product
Where the click lands.
Study the product story and store experience behind the acquisition funnel.
Screenshots
03 / Market context
The business behind the app.
Keep revenue, downloads and store rankings separate from advertising performance.
How Much Does Scientific Calculator fx-991 Make?
Monthly Revenue
$1.0K
Annualized estimate
$12.0K
Per Download
$0.02
Platform Performance
🍎iOS
Revenue
$1.0K
Downloads
60.0K
Rating
4.5 ★(403)
Rating Distribution
4.5
★★★★★
403 reviews
5
6%
4
2%
3
3%
2
10%
1
79%
Top Countries
🇵🇭 PH🇻🇳 VN🇪🇬 EG
Reviews (3)▼
★★★★★babyjesus12439/2/2026
Best one so far
This has been very helpful for my Electro Technology classes. I don’t own a physical one and this is so useful plus free. There are ads but it’s not that bad they are not in your face. For the most part you can ignore them and they don’t throw it in your face forcing you to pay for it.
★★★★★Most honest 8781/7/2026
Love the Calc
I have had a great time using this calculator for school and it has helped me in so many ways
★★★★★Dissatisfied user 889712/11/2024
Possibly the best free calculator app there is
I tried several popular calculator apps and they all have terrible user interfaces. I was looking for something as close a scientific calculator as possible, and this one is the best I’ve found. One suggestion would be to change the ☐² to X² and ☐⁻¹ To X ⁻¹
Version History (52)▼
1.9.08/21/2026
1.8.97/25/2026
1.8.85/23/2026
1.8.55/18/2026
1.8.45/14/2026
1.8.35/5/2026
1.8.24/24/2026
1.8.14/11/2026
1.8.04/9/2026
1.7.93/31/2026
Available In (115 Countries)▼
🇺🇸 United States🇦🇺 Australia🇨🇦 Canada🇨🇳 China🇫🇷 France🇩🇪 Germany🇬🇧 United Kingdom🇮🇹 Italy🇯🇵 Japan🇰🇷 South Korea🇷🇺 Russia🇩🇿 DZ🇦🇴 AO🇦🇷 Argentina🇦🇹 Austria🇦🇿 AZ🇧🇭 BH🇧🇧 BB🇧🇾 BY🇧🇪 Belgium🇧🇲 BM🇧🇷 Brazil🇧🇬 Bulgaria🇨🇱 Chile🇨🇴 Colombia🇨🇷 CR🇭🇷 Croatia🇨🇾 CY🇨🇿 Czech Republic🇩🇰 Denmark🇩🇴 DO🇪🇨 EC🇪🇬 Egypt🇸🇻 SV🇫🇮 Finland🇬🇭 GH🇬🇷 Greece🇬🇹 GT🇭🇰 Hong Kong🇭🇺 Hungary🇮🇳 India🇮🇩 Indonesia🇮🇪 Ireland🇮🇱 Israel🇰🇿 KZ🇰🇪 Kenya🇰🇼 KW🇱🇧 LB🇱🇹 Lithuania🇱🇺 LU🇲🇴 MO🇲🇬 MG🇲🇾 Malaysia🇲🇹 MT🇲🇽 Mexico🇳🇱 Netherlands🇳🇿 New Zealand🇳🇬 Nigeria🇳🇴 Norway🇴🇲 OM🇵🇰 Pakistan🇵🇦 PA🇵🇪 Peru🇵🇭 Philippines🇵🇱 Poland🇵🇹 Portugal🇶🇦 QA🇷🇴 Romania🇸🇦 Saudi Arabia🇷🇸 RS🇸🇬 Singapore🇸🇰 Slovakia🇸🇮 Slovenia🇿🇦 South Africa🇪🇸 Spain🇱🇰 LK🇸🇪 Sweden🇨🇭 Switzerland🇹🇼 Taiwan🇹🇭 Thailand🇹🇳 TN🇹🇷 Turkey🇺🇦 Ukraine🇦🇪 UAE🇺🇾 UY🇺🇿 UZ🇻🇪 VE🇻🇳 Vietnam🇧🇴 BO🇰🇭 KH🇪🇪 Estonia🇱🇻 Latvia🇳🇮 NI🇵🇾 PY🇦🇫 AF🇬🇪 GE🇮🇶 IQ🇱🇾 LY🇲🇦 MA🇲🇿 MZ🇲🇲 MM🇾🇪 YE🇧🇯 BJ🇧🇫 BF🇨🇲 CM🇨🇬 CG🇨🇮 CI🇯🇴 JO🇱🇦 LA🇲🇱 ML🇸🇳 SN🇹🇿 TZ🇺🇬 UG🇿🇲 ZM🇿🇼 ZW
Supported Languages (59)▼
AFSQArabicHYAZEUBEBGCACroatianCzechDanishDutchEnglishETFinnishFrenchGLKAGermanGreekGUHebrewHIHungarianISIndonesianItalianJapaneseKNKKKoreanKYLVLTMKMalayMLMNNENorwegianPersianPolishPortugueseRomanianRussianSRChineseSISlovakSLSpanishSwedishThaiTurkishUkrainianURVietnameseZU
App Details▼
Scientific Calculator fx-991 – The Ultimate Math & Science Tool! Struggling with math problems, equations, or integrals? Need a powerful scientific c...
Publisher
Dinh Phuc
Vi
In-App Purchases (5)
| Name | Price | Type |
|---|---|---|
| Remove Ads 30 Days | $0.99 | One-time |
| Monthly Premium Access | $1.99 | Monthly |
| 6-Month Premium Membership | $2.49 | Semi-Annual |
| Yearly Premium Access | $7.99 | Yearly |
| HiEdu Pro Lifetime | $14.99 | One-time |
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