SSC Spring Engineering vs TB Logic
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SSC Spring Engineering
This utility app assists with spring engineering calculations, including conversions, new designs, and comparisons. It helps determine spring and drum specifications for various applications, such as rolling steel doors, and calculates lifting capacities.
- Spring conversion
- New spring engineering
- Drum specification comparison
- IPPT spring calculation
- Rolling steel door spring design
- Approximate pull calculation
- Maximum lift capacity determination
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Convert springs, engineer new springs, compare drum specifications, calculate springs by IPPT, design springs for rolling steel doors, calculate approximate pull, or determine the maximum lift a spring/drum can lift on any job at any time. Application developed by Service Spring Corporation - a leader in spring manufacturing and customer service in the overhead door industry.
TB Logic
This construction calculator offers essential tools for framers, concrete crews, and GCs. It provides feet-inch-fraction math and a tap-to-reuse running tape. A Pro version unlocks smart formulas, AI chat for jobsite math, and the ability to save and share work.
- Feet-inch-fraction math
- Tap-to-reuse running tape
- Smart construction formulas
- AI jobsite math chat
- Save and share work
- Bilingual support (English/Spanish)
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Tool Belt Logic is the jobsite calculator built for framers, concrete crews, and GCs - fast, simple, and made for dirty gloves. Free to use: - Construction calculator with feet-inch-fraction math - Tap-to-reuse running tape so you never lose a number Tool Belt Logic Pro unlocks: - Smart formulas: Rake Wall, Arch Wall, Stair Layout, Hip/Valley, Circle, Concrete Volume, and more - each with a clear cut list and a to-scale diagram - AI Chat that answers jobsite math in plain language - Learning Mode field tips - Save and share your work - English and Spanish No clutter, no fluff - just the numbers you need to build it right the first time.
Screenshots
Verdict
The clearest difference is review sentiment: TB Logic at 100% against SSC Spring Engineering's 50%. TB Logic also leads on update cadence (weekly vs every 6 months) and rating (5.0 vs 4.6). SSC Spring Engineering's advantage is in-app purchases (none vs 2) and ratings volume (26 vs 4). On price, ads, device support and iOS requirement 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. TB Logic sells 2 in-app purchases, starting at $5.99 per month. SSC Spring Engineering asks for nothing beyond the download.
TB Logic holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: SSC Spring Engineering has 26 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 50% of SSC Spring Engineering's written reviews are positive against 100% of TB Logic's.
SSC Spring Engineering ships an update every 6 months, TB Logic weekly. The most recent releases landed on September 29, 2026 and October 10, 2026 respectively.
| Parameter | SSC Spring Engineering | TB Logic |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (26 ratings) | 5.0 (4 ratings) — better |
| Positive reviews | 50.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 26 — better | 4 |
| Update frequency | Every 6 months | Weekly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Freemium |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.1 | 15.1 |
| Further details — not scored | ||
| Size | 38 MB | 49 MB |
| Age rating | 4+ | 4+ |
| Developer | Service Spring Corporation | Chill Inc |
Customer experience
SSC Spring Engineering
TB Logic
In-app purchases
SSC Spring Engineering
No in-app purchases
TB Logic
- Tool Belt Logic Pro3 Days trial$5.991 Month
- Tool Belt Logic Pro (Yearly)3 Days trial$65.991 Year
Questions
Is SSC Spring Engineering free?
Is TB Logic free?
Which has better reviews, SSC Spring Engineering or TB Logic?
Do SSC Spring Engineering or TB Logic have ads?
Which is updated more often, SSC Spring Engineering or TB Logic?
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