Acute Calculator vs EngKit
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Acute Calculator
This advanced graphing calculator offers a visual editor and supports over 30 functions. It includes features like a history tape, variable storage, and an intuitive palette system for complex calculations.
- Visual editor
- 30+ functions supported
- History tape
- Store variables
- Intuitive palette system
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+ Easy to use visual editor + Supports 30+ functions + Intuitive palette system + Comes with history tape + Store variables for later + No ads or subscriptions Terms of Use: https://acutecalc.app/terms Privacy Policy: https://acutecalc.app/privacy
EngKit
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EngKit is a focused toolkit of engineering and math calculators, built for students, hobbyists and professionals who want fast, accurate tools without clutter. FREE MODULES • Resistor Code — decode resistance from color bands, convert between SI units • Ohm's Law — calculate voltage, current and resistance interactively • LED Resistor Calculator — find the right series resistor for any LED and supply voltage • Voltage Divider — design resistor voltage dividers for any target output • Resistor Network — equivalent resistance for series and parallel circuits • Matrix Calculator — add and multiply matrices up to 10×10 • Graphing Calculator — plot and explore math functions with pan and zoom • Unit Converter — convert between 14 categories: length, mass, temperature and more PRO MODULES (one-time unlock) • Complex Numbers — add, subtract, multiply and divide in rectangular or polar form • Capacitor Code — decode capacitance from EIA 3-digit codes and tolerance letters • Equation Solver — solve linear, quadratic and 2×2 systems of equations • Triangle Solver — solve triangles and trig functions with exact values • Root Finder — bisection, false position, Newton-Raphson and secant No subscriptions. No ads. Pay once for Pro and keep every current and future module.
Screenshots
Verdict
The clearest difference is update cadence: Acute Calculator at every 2 days against EngKit's every 2 weeks. Acute Calculator also leads on iOS requirement (16.0 vs 26.1). 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. Acute Calculator sells 3 one-off in-app purchases and EngKit sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Acute Calculator ships an update every 2 days, EngKit every 2 weeks. The most recent releases landed on October 16, 2026 and October 14, 2026 respectively.
| Parameter | Acute Calculator | EngKit |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (116 ratings) — better | — |
| Positive reviews | 94.9% of reviews | — |
| Number of ratings | 116 — better | — |
| Update frequency | Every 2 days — better | Every 2 weeks |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16.0 — better | 26.1 |
| Further details — not scored | ||
| Size | 16 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | Find App, Inc. | Rodrigo Vivas |
Bugs and requests
Acute Calculator
Reported bugs
6 issues- Animation and UI bugs
- Discount button crashes app
- Animation lags and skips when sliding down history
- Calculations are incorrect
- Does not follow correct order of operations
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- Transition for history is slow
Requested features
11 requests- Make app icon simpler/restrained
- Add units to graph
- Allow press and hold on graph lines for values
- Support Korean language
- Display commas while entering numbers
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- Double-tap to recenter graph interface
- Ability to solve for a variable
- Dedicated button for +/-
- Option to pin in control center
- Make comma separator format selectable
- Improve app icon design
EngKit
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Acute Calculator
- Acute Plus Limited-Time Offer$3.49
- Acute Plus (For Students)$4.99
- Acute Plus (One Time)$6.99
EngKit
- Pro Unlock$6.99









