Bolt Torque vs Units
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Bolt Torque
Calculate maximum tightening torque and preloads for various screws. Analyze preloads and stresses to ensure limits are met. All screw data is conveniently presented on a results page.
- Calculate tightening torque
- Calculate preloads
- Analyze stresses
- Check limits
- View screw data
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Take benefit from my engineering know how and calculate the max. tightening torque and preloads for many iso-metric and imperial screws. Calculate the preloads and stresses and check the limits. All screw data are listed on a result page. This app is a "must have" for all engineers in design departments.
Units
Instantly convert any unit with this comprehensive tool. It offers 57 categories, built-in calculators for finance and health, and size lookup tables for clothing and hardware. Enjoy offline functionality and a clean, ad-free experience.
- 57 conversion categories
- Built-in calculators (currency, finance, health)
- Size lookup tables
- Offline functionality
- Conversion history
- Favorites
- Multi-language support
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Convert any unit, instantly. Units - Conversion Calculator is a fast, intuitive, and beautifully designed conversion tool with 57 categories covering everything you need from everyday measurements to specialized engineering and scientific units. What you can convert: ▸ Length, Mass, Temperature, Speed, Time, Area, Volume, Pressure, Energy, Power, Force, and many more ▸ Data Storage, Data Transfer, Frequency, Fuel Economy ▸ Cooking units, Numeral Systems, Color Codes, Typography ▸ AWG Wire Gauge, Torque, Luminance, Sound Level Built-in Calculators: ▸ Currency Converter with live exchange rates ▸ Date Calculator — days between dates, add/subtract time ▸ BMI, Body Fat, Calorie Calculator ▸ Tip Calculator, Discount & Tax, Loan & Mortgage ▸ Percentage, Aspect Ratio, Ohm's Law, Power-Voltage-Current ▸ Hex/RGB/HSL Color Converter ▸ Roman Numerals, Fuel Cost, Speed-Distance-Time Size Lookup Tables: ▸ Shoes (Men & Women), Tops, Pants, Ring Sizes ▸ Children's Clothing (Boys & Girls) ▸ Bra Sizes, Screw & Bolt Sizes Why you'll love it: ◆ 100% offline — no internet required (except live currency rates) ◆ Conversion history — never lose a result ◆ Favorites — quick access to the categories you use most ◆ 7 languages — English, Deutsch, Español, Français, Italiano, Português, Nederlands ◆ Dark theme — easy on the eyes ◆ No ads. No tracking. No account needed. ◆ All your data stays on your device. Whether you're a student, engineer, chef, traveler, or just need a quick conversion — Units - Conversion Calculator has you covered. Privacy Policy: https://www.notion.so/Units-Conversion-Calculator-32dd964a6f0c80a9a391e07642fba0f9?source=copy_link
Screenshots
Verdict
The clearest difference is price: Units at Free against Bolt Torque's $9.99. Units also leads on ratings volume (6 vs 1) and iOS requirement (15.1 vs 18.6). Bolt Torque's advantage is rating (5.0 vs 4.8). 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
Units is free to download; Bolt Torque costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Bolt Torque holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Units has 6 ratings behind it against 1, so its average is the more settled of the two.
| Parameter | Bolt Torque | Units |
|---|---|---|
| Price | $9.99 | Free — better |
| Rating | 5.0 (1 ratings) — better | 4.8 (6 ratings) |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 1 | 6 — better |
| Update frequency | Monthly | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 18.6 | 15.1 — better |
| Further details — not scored | ||
| Size | 1 MB | 33 MB |
| Age rating | 4+ | 4+ |
| Developer | Jochen Autrata | Matys Bouziane |
Customer experience
Bolt Torque
Units
In-app purchases
Bolt Torque
No in-app purchases
Units
No in-app purchases
Questions
Is Bolt Torque free?
Is Units free?
Which has better reviews, Bolt Torque or Units?
Do Bolt Torque or Units have ads?
Other comparisons
