Calculator # vs FieldCalc
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Calculator #
This multi-function calculator offers basic to advanced scientific and algebraic computations. It includes features like handwriting recognition, equation solvers, and 2D graphing, making it suitable for students and professionals. In-app purchases unlock advanced capabilities.
- Math Photos Solver
- Handwriting Recognition
- AI Math Problem Solver
- Mathematical Display
- Equation Solvers
- 2D Graphing
- Algebraic Functions
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◉ Over 11,000,000 Downloads Worldwide ◉ Top Free Utilities Apps in US, UK, AUS, CAN, GER,... ◉ Rated & Reviewed on ILoveFreeSoftware.com FREE Alternative to Graphing TI-83, TI-84, TI-89, Casio FX, Sharp EL,... Calculator # – The free, multi-function calculator for iPhone/iPad is proud to offer a variety of features to satisfy wide ranges of customers: The App possesses a powerful math core and algebra engine with mathematical display support, making it a viable tool for everyone from those looking for basic calculation to more advanced users, such as scientific computation, engineers, and math students. Calculator # makes available everything you need – including a user manual and tutorial video clips – so you can master the app in a matter of minutes! ◉ Official Website: http://iPhoneCalculator.com ◉ ADVANCED FEATURES: ▸ Math Photos Solver * ▸ Handwriting Recognition * ▸ Math Problem Solver (AI) * ◉ GENERAL FEATURES: ▸ Universal Calculator App ▸ Support All the Latest Devices ¹ ▸ Support Multitasking (iPad) ▸ Support Wireless KB ² ▸ Mathematical Display ▸ Edit & Export Expression/Result ▸ History Tape View ▸ Basic Calculations (+, -, x, ÷, %, Abs,...) ▸ Advanced Functions (Sin,Cos,Ln,X!, ^, √,…) ▸ 14 Memory Variables (Including X,Y,Z,M) ▸ Assignment Operator ▸ F(x) Customize Functions (F1 Only) ▸ Fraction and Degree/Angle Calculation ▸ Numeric Integral Calculation ▸ Dual Skins (Silver Light & Carbon+) ◉ ALGEBRA FEATURES: ▸ Big Integer & Rational Number (Up to 30!) ▸ Expand and Factor Polynomials ▸ Basic Indefinite integral ◉ EQUATIONS SOLVERS: ▸ Quadratic Equations ▸ System of Linear Equations (2 Unknowns) ◉ 2D GRAPH: ▸ Snap to Points ▸ Smooth Zoom & Transformation ▸ Support F(X,Y) = 0. E.g. Sin(X) + Cos(Y) = 0. ◉ MULTIPLE LANGUAGES: ▸ English, Spanish, German, ▸ French, Japanese, Chinese (*) In-App-Purchase is required ¹: Include iPhone 6/6S+ HD Retina Display ²: Standard English KB We love your feedback, Thanks a lot ! Terms of Service: https://iphonecalculator.com/terms-of-service/
FieldCalc
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FieldCalc keeps job-site measurements, material estimates, photos and PDF reports together in a local project record. Work offline Create projects, calculate materials, add job photos and generate reviewable PDF reports even when the job site has no connection. Built for field work Calculate area, volume, roofing, stairs, lumber, drywall, concrete, paint, flooring and wall framing. Adjust waste and rounding, then keep saved inputs and results with the project. Keep the record connected Attach or import photos, add visual annotations and link them to the related calculation. Export a PDF report or a ZIP backup when you need an independent copy. Local first Confirmed changes are saved on your device first. FieldCalc Pro adds optional iCloud sync and single-project collaboration; a cloud issue never prevents work with the local project. One-time Pro purchase FieldCalc is free to download. FieldCalc Pro is a non-consumable, one-time in-app purchase that unlocks advanced tools including AR-assisted length estimates, ZIP backup and optional iCloud tools. Prices are shown by the App Store for your region. FieldCalc provides estimates, not professional certification. Verify measurements, product specifications and local requirements before purchasing or building.
Screenshots
Verdict
The clearest difference is ads: FieldCalc at none against Calculator #'s shown. FieldCalc also leads on update cadence (every 3 days vs every 2 months). Calculator #'s advantage is iOS requirement (12.1 vs 17.0). On price, 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. Calculator # sells 6 in-app purchases, starting at $1.49 per month and FieldCalc sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Calculator # ships an update every 2 months, FieldCalc every 3 days. The most recent releases landed on November 10, 2026 and October 31, 2026 respectively.
| Parameter | Calculator # | FieldCalc |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (36K ratings) — better | — |
| Positive reviews | 70.7% of reviews | — |
| Number of ratings | 36K — better | — |
| Update frequency | Every 2 months | Every 3 days — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 12.1 — better | 17.0 |
| Further details — not scored | ||
| Size | 57 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Incpt.Mobis | 伟健 刘 |
Bugs and requests
Calculator #
Reported bugs
3 issues- Crashes when trying to use certain functions
- Handwriting recognition not working reliably
- Inability to input negative numbers
Requested features
3 requests- Add option to turn off animation
- Improve ad placement to avoid obstructing usage
- Provide more transparency on paid features
FieldCalc
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Calculator #
- PRO Upgrade 1 Month3 Days trial$1.491 Month
- PRO Upgrade 3 Months7 Days trial$2.993 Months
- PRO + Recognition 1 Month$4.991 Month
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- PRO + Recognition 3 Months$11.993 Months
- 250 AI Recognition & Queries$0.99
- 600 AI Recognition & Queries$1.99
FieldCalc
- FieldCalc Pro Lifetime$6.99
Questions
Is Calculator # free?
Is FieldCalc free?
Do Calculator # or FieldCalc have ads?
Which is updated more often, Calculator # or FieldCalc?
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