Calculator vs SteelKit
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Calculator
This app offers a comprehensive scientific calculator with multiple modes, including algebraic, scientific, conversions, and logic calculations. It features a user-friendly design with large buttons and remembers your progress if interrupted.
- Algebraic entry
- Scientific calculations
- Unit conversions (length, area, volume, etc.)
- Logic calculator (binary, octal, decimal, hex)
- 10 memory registers
- Wide number range support
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Here's a full-featured scientific calculator for your iPhone or iPod touch. It's really six calculators in one, with new button sets exposed by a tap on the tab bar. Features are important, but it's the little things that count, right? Little things like a design that looks like it belongs on your iPhone; big, easy to press buttons; a delete key in case you hit the wrong one; and picking up right where you left off if you are interrupted by a phone call--even in the middle of entering a number. Features: 1. Algebraic entry 2. Scientific calculations 3. Conversions for - Length - Area - Volume - Temperature - Mass - Speed 4. Logic calculator supporting base 2, 8, 10 and 16 5. 10 memory registers 6. Numbers range from about 1e-313 to 1e308 7. Displays 14 significant digits
SteelKit
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SteelKit is the workshop tool for people who work with steel: fabricators, blacksmiths, steel contractors and designers. FULL PROFILE CATALOG Look up IPE, IPN, UPN, HEA, HEB, HEM, round tubes, rectangular tubes, angles, rounds and flats. Each profile shows the weight per meter and the dimensions. WEIGHT IN A FEW SECONDS Enter the length and the quantity and read the weight. It also works for a profile that is not in the catalog: just enter the sizes. SHEETS Pick the thickness and the sheet size and read the weight. Smooth, ribbed and tread plate. DEVELOPMENTS Cones, reducers and square-to-round. See the part in 3D, turn it with your finger and save the flat pattern as PDF or DXF. PLATES AND FLANGES Set the holes and the center hole, check the preview and export the DXF for cutting. MATERIAL LISTS Add the pieces, set the price per kg and get the total weight and a cost estimate. Matching pieces combine on their own. From the list you prepare the request for your supplier. OFTEN USED PROFILES The profiles you open most stay within reach. You can clear that history when you want. WORKSHOP TABLES Threads, wrench sizes, welding and specific weights, always on the phone. UNIT CONVERTER Switch between millimeters and inches, kilograms and pounds, and the other measures you use in the shop. SUPPLIERS Keep names, notes and contacts. Everything stays on the phone. WORKS OFFLINE No account and no internet. The data is already on the phone, even with no signal. LANGUAGES Italian, English, French, German, Spanish and Romanian. Made for the workshop, with large numbers and few steps.
Screenshots
Verdict
The clearest difference is price: SteelKit at Free against Calculator's $1.99. SteelKit also leads on update cadence (every 4 days vs every 11 months). Calculator's advantage is iOS requirement (15.6 vs 17.6). On 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
SteelKit is free to download; Calculator costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Calculator ships an update every 11 months, SteelKit every 4 days. The most recent releases landed on October 23, 2026 and October 25, 2026 respectively.
| Parameter | Calculator | SteelKit |
|---|---|---|
| Price | $1.99 | Free — better |
| Rating | 4.0 (1 ratings) — better | — |
| Positive reviews | 60.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 11 months | Every 4 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 15.6 — better | 17.6 |
| Further details — not scored | ||
| Size | 5 MB | 19 MB |
| Age rating | 4+ | 4+ |
| Developer | Byte Works, Inc. | ALECU POPA |
In-app purchases
Calculator
No in-app purchases
SteelKit
No in-app purchases









