SteelSolve vs Cassette
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SteelSolve
This app simplifies complex calculations for construction professionals. It supports various units, allows for easy expression editing, and provides instant results as you type. Features include built-in functions for rise, run, diagonal, and slope, along with estimating capabilities.
- Feet, Inch, and Fraction Input
- Unit Assignment and Conversion
- Full Expression Editing
- Instant Results as You Type
- History Tape for Previous Entries
- Rise, Run, Diagonal, and Slope Functions
- Estimating Functions
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- Feet, Inch, and Fraction Input, along with other units in 28 categories. - Fully Functional Unit calculator - ft x ft = sqft. Quickly convert result to other units. - See the whole expression, and tap numbers to edit. Answers are live. - Free of Annoying Ads, No Internet connection required. - Powerful Dictation such as “5 feet 4 and 3/8 plus 36 and a quarter inch" - Date and Time Calculations built in - “Today + 7 weeks” - History tape to store, categorize, re-use and export your calculations. - Rise, Run, Diagonal, and Slope functions built-in. - Pricing units to turn quantities into prices: 500 lbs * 25 $/lb. - Quick Fraction entry buttons and fractions in your results. - Smart Parentheses that are not strict: 1 + 2 ) x 3 - Unit Combinations such as deg-min-sec or lb-oz. Powerful Dictation - Tell the Calculator what to calculate: - “26 feet times 42-feet-7 times 6 inches, convert to cubic yards” - “50 feet times 40 pounds per foot times a dollar 50 per pound plus 30 percent margin” - “4 foot run, 3 foot rise, slope” - “Average of 2 and a half feet and 4 meters” - “Convert 7 and 3/4 meters to decimal feet” - “13 tablespoons times 3 in cups” - “Working Days until December 20th” - “August 11th of last year plus 3 weeks” Custom version with additional features: - Purchase for a one-time fee. - Use Pro Accent Theme for a beautifully colored keypad. - Customize your Calculator Keypad with a catalog of available buttons. - Add custom units with intelligent suggestions for composite units. - Add custom functions to calculate more complex expressions. - Edit the Look up Database, write your own pages and calculators, share customizations with others. Specialized Calculators: - Right Triangle Calculator, Oblique Triangle, Arc Segment, Graphing Calculator, and more for Geometry. - Spacing Calculators that give you running dimensions, for standard spacings and picket railings. - Compound Miter and Compound Angle Calculators with visuals to show angled cuts. - Date Difference and Date Add or Subtract Calculators with Working/Calendar Days. - Stair Stringer and Rake Wall calculators for framers, including layout drawings. - Finance Calculators - Mortgage, Interest, with graphs. - Excel-Style Formula Solver - Export what you’re seeing to PDF or PNG - Talk to these calculators with dictation - Custom Calculator pages - Make 2 of your own in the free version. Steel and Wood Shapes and Tools: - Steel and Wood Shapes Database with accurate shape visualizations. - Enter the Length of a Profile to quickly calculate the weight or board-feet. - Use Steel List and Wood List to keep track of a list of Material or calculate weights. Export to PDF or CSV. - Material Nesters for lengths and 2D sheets that give you an optimized cutting layout. - Filter to find shapes by their dimensions with Pipe Search & WF Search. - Customizable Home Screen for quick access to your favorite shapes & calculators. - Find a shape using natural language dictation. HSS 6 by 6 by quarter - Steel Grating load tables and calculators. - Deflection calculators for Steel & Wood Beams, Rigging calculators
Cassette
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Cassette is a tape recorder for your iPhone. Load a tape, press record, and talk. Your words turn into text while you speak. When you stop, the tape goes on the shelf with the others - named, coloured, and ready to play back. Long tapes come back with a title, a summary, and chapters, so the one thing you wanted to remember is easy to find again. - Rewind and record over any point, like with a real tape recorder - Press on a line of the transcript to jump to that moment in the recording - Keeps recording while you use other apps - Collections, colors, and names you choose - Export any tape as text or audio - More than 30 languages Transcription and summaries run on your iPhone - no cloud required. Requires iPhone running iOS 26 or later.
Screenshots
Verdict
The clearest difference is in-app purchases: Cassette at none against SteelSolve's 1. SteelSolve's advantage is iOS requirement (17.0 vs 26.0). On price, ads 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. SteelSolve sells 1 one-off in-app purchase. Cassette asks for nothing beyond the download.
| Parameter | SteelSolve | Cassette |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (7 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 7 — better | — |
| Update frequency | Monthly | — |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free | — |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 17.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 15 MB | 53 MB |
| Age rating | 4+ | 4+ |
| Developer | Heber Harker | Choosewise LLC |
In-app purchases
SteelSolve
- Custom$12.99
Cassette
No in-app purchases









