OneCalc: All-in-one Calculator
What is OneCalc?
All-in-one Calculator is a free productivity app for iPhone and iPad. It includes a standard calculator with an advanced scientific mode, along with unit converters, financial, health, everyday math, construction, date and time, and business calculators. The listing describes over 40 calculators and unit converters in total.
Pricing. OneCalc: All-in-one Calculator is free to download on the App Store.
Good for
- Estimating materials for small repair or DIY projects
- Working out loan payments or savings and interest
- Calculating tips, discounts, sales tax or profit margins
Screenshots
Why this app is in S tier
OneCalc scores 91 out of 100: rating 91, rating count 79, App Store search rank 93, update recency 99. The four parts are averaged with no weights, and S tier follows from that score within this list. The full explanation, as data.
Description
All-in-one Calculator is a free calculator app for iPhone and iPad featuring over 40+ calculators and unit converters categorized under finance, health, date & time, construction, shopping and everyday math. Simple yet powerful, the following features are built into this all-in-one calculator app:- STANDARD CALCULATOR • Includes percent key, negative sign, memory functions, brackets and history viewer. • Advanced mode includes functions for trigonometry, roots, exponents and logarithm found in scientific calculators. UNIT CONVERTER • Convert values between metric/ imperial units with conversion calculators for temperature, length, weight, area, volume and many more. FINANCIAL CALCULATORS • Interest calculators using simple and compound interest • Loan calculator with amortization schedule • Savings calculator to calculate future value and monthly savings amount • Currency converter HEALTH -Keep track of your body weight with these calculators:- • BMI calculator • Calories burnt calculator • Running Pace calculator EVERYDAY MATH • Percentage calculator • Fraction calculator • Rounding calculator • Area/ Volume calculator • Right-triangle calculator CONSTRUCTION -Estimate ma
Compare in Calculation
| Measure | |||
|---|---|---|---|
| Tier | S | S | S |
| Score | 91 / 100 | 92 / 100 | 91 / 100 |
| Rating | 4.6 ★ | 4.7 ★ | 4.6 ★ |
| Ratings | 5.1K | 25.3K | 359K |
| Latest ratings · 180d | — | 4.0 ★ · 20 reviews | 1.9 ★ · 20 reviews |
| Last update | 66d ago | 33d ago | 79d ago |
| Price | Free download | Free download | Free download |
Alternatives
See all 39 ›Questions about OneCalc
Is the app free?
Yes. It is free to download. No in-app purchases are listed.
Does it include a scientific calculator?
The standard calculator has an advanced mode with trigonometry, roots, exponents and logarithm functions, which the listing describes as found in scientific calculators.
Which devices does it support?
The listing describes the app as being for iPhone and iPad.
Is OneCalc free?
OneCalc is free to download.
What is OneCalc good for?
OneCalc is built for estimating materials for small repair or DIY projects, working out loan payments or savings and interest, calculating tips, discounts, sales tax or profit margins. It sits in the calculation list on AppTierList.
Is OneCalc worth it?
OneCalc is S tier, ranked #7 of 40 calculation apps with a score of 91 out of 100, from a 4.6 App Store rating across 5,102 ratings. It is in the list's top tiers; 6 apps rank above it.
How does OneCalc compare to Calculator with History +?
OneCalc is S tier at 91; Calculator with History + is S tier at 92. Calculator with History + ranks higher. OneCalc is free to download, Calculator with History + is free to download.
How often is OneCalc updated?
OneCalc was last updated on 2026-08-17, 66 days ago.
All the facts
- List
- Calculation (S tier, #7)
- Tier
- S (Best in class)
- Score
- 91 / 100
- Rank in list
- #7 of 40
- Ranking certainty
- settled
- Price
- Free download
- App Store rating
- 4.6 out of 5
- Number of ratings
- 5,102
- Current version
- (66 days ago)
- App Store data read
- App Store category
- Productivity
- Good for
- Estimating materials for small repair or DIY projects, Working out loan payments or savings and interest, Calculating tips, discounts, sales tax or profit margins
- Requires
- iOS 15.6 or later
- Size
- 6 MB
- Age rating
- 4+
- Languages
- 11
- Maker
- unclaimed
- As data
- JSON · why it ranks here
App Store data read · ranking · how it is computed