jCalc vs Mongol Draft
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
jCalc
This app is a powerful yet easy-to-use scientific calculator designed for students, teachers, and professionals. It simplifies complex calculations involving fractions, decimals, and advanced equations with flexible answer formats and smart conversions.
- Fractions and decimals calculations
- Flexible answer formats
- Smart conversions
- Advanced math functions
- Memory recall
- Auto parentheses
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Simple. Powerful. Easy to Use. jCalc is a scientific calculator designed for students, teachers, and professionals. Whether you're solving fractions, decimals, or advanced equations, jCalc makes it easy and intuitive. Key Features: Fractions and Decimals Made Easy: • [1] [.] [2] = 1.2 • [1] [n/d] [2] = 1/2 • [1] [n/d] [2] [Nn/d] [3] = 1_2/3 Flexible Answer Formats: • Display up to 16 decimal places • Results in irrational, rational, decimal, or scientific format • Trigonometric results in radians, degrees, or gradians Smart Conversions: • [Ab/c] ⟺ [a/b] ⟺ [a.b] ⟺ [a.b×10^c] Button Functions You’ll Love: • [del]: Delete the last entry • [C]: Clear the current expression • [AC]: Hold [C] to clear all entries • [sci]: Switch to scientific mode • [2nd]: Access advanced functions Advanced Math Features: • Memory Functions: Recall previous answers with [ans] • Auto Parentheses: No manual typing needed • Percent Button: Simplify percentage calculations • Scientific Notation: Effortless input for large numbers • π Button: Quick access to π Comprehensive Math Tools: • Roots, powers, and exponents • Logarithms (including custom bases) • Trigonometric and hyperbolic functions ([hyp]) • Permutations, combinations, and factorials ([prob]) Discover a calculator that’s as simple as it is powerful. Happy calculating!
Mongol Draft
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Traditional Mongolian Drafts
Screenshots
Verdict
The clearest difference is update cadence: Mongol Draft at every 5 days against jCalc's every 7 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
jCalc ships an update every 7 months, Mongol Draft every 5 days. The most recent releases landed on October 21, 2026 and October 28, 2026 respectively.
| Parameter | jCalc | Mongol Draft |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (259 ratings) — better | — |
| Positive reviews | 85.2% of reviews | — |
| Number of ratings | 259 — better | — |
| Update frequency | Every 7 months | Every 5 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 14.1 | 13.0 — better |
| Further details — not scored | ||
| Size | 2 MB | 61 MB |
| Age rating | 4+ | 4+ |
| Developer | Jon Ericksen | 琴布和 斯 |
Bugs and requests
jCalc
Reported bugs
7 issues- Display characters not rendering correctly (about 1/4 of characters missing)
- Fraction buttons not working as intended
- iPhone landscape mode does not rotate or display split view
- App freezes during use
- Character display issues with numbers 0-9 appearing incomplete
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- Compatibility issues with latest iOS updates
- Fraction input only accepts single digits before conversion
Requested features
9 requests- Widget support for home screen
- Scientific calculator functions (sin, cos, tan, square root, squaring)
- Original version 1.0 color scheme option
- Running tape format in newer versions
- Screen rotation lock for landscape mode
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- Memory function for calculations
- More conventional calculator design option
- Tutorial or onboarding guide
- Support for iPhone Max devices
Mongol Draft
Not enough reviews yet to summarise bugs or requests.
In-app purchases
jCalc
No in-app purchases
Mongol Draft
No in-app purchases
Questions
Is jCalc free?
Is Mongol Draft free?
Do jCalc or Mongol Draft have ads?
Which is updated more often, jCalc or Mongol Draft?
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